gemini: Add v4.19 kernel patches

This is the remainder of kernel patches for the v4.19
kernel. A whole slew of the previous patch stack is now
upstream, so this mainly contains the stuff that was
added upstream between v4.19 and v5.0-rc1, and then
the USB FOTG201 patches from Hans.

Signed-off-by: Linus Walleij <[email protected]>

target/linux/gemini/patches-4.19/0001-pinctrl-gemini-Mask-and-set-properly.patch

@@ -0,0 +1,36 @@
+From f8ac3d3472a8dc99c8647a637611d146d88be8cb Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Tue, 9 Oct 2018 10:09:14 +0200
+Subject: [PATCH 01/18] pinctrl: gemini: Mask and set properly
+
+The code was written under the assumption that the
+regmap_update_bits() would mask the bits in the mask and
+set the bits in the value.
+
+It missed the points that it will not set bits in the value
+unless these are also masked in the mask. Set value bits
+that are not in the mask will simply be ignored.
+
+Fixes: 06351d133dea ("pinctrl: add a Gemini SoC pin controller")
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/pinctrl/pinctrl-gemini.c | 3 ++-
+ 1 file changed, 2 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/pinctrl/pinctrl-gemini.c b/drivers/pinctrl/pinctrl-gemini.c
+index fa7d998e1d5a..1e484a36ff07 100644
+--- a/drivers/pinctrl/pinctrl-gemini.c
++++ b/drivers/pinctrl/pinctrl-gemini.c
+@@ -2184,7 +2184,8 @@ static int gemini_pmx_set_mux(struct pinctrl_dev *pctldev,
+ 		 func->name, grp->name);
+ 
+ 	regmap_read(pmx->map, GLOBAL_MISC_CTRL, &before);
+-	regmap_update_bits(pmx->map, GLOBAL_MISC_CTRL, grp->mask,
++	regmap_update_bits(pmx->map, GLOBAL_MISC_CTRL,
++			   grp->mask | grp->value,
+ 			   grp->value);
+ 	regmap_read(pmx->map, GLOBAL_MISC_CTRL, &after);
+ 
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0002-pinctrl-gemini-Fix-up-TVC-clock-group.patch

@@ -0,0 +1,146 @@
+From ce81398dccb984855de606b75db25eddecdaa9e5 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Wed, 10 Oct 2018 20:25:39 +0200
+Subject: [PATCH 02/18] pinctrl: gemini: Fix up TVC clock group
+
+The previous fix made the TVC clock get muxed in on the
+D-Link DIR-685 instead of giving nagging warnings of this
+not working. Not good. We didn't want that, as it breaks
+video.
+
+Create a specific group for the TVC CLK, and break out
+a specific GPIO group for it on the SL3516 so we can use
+that line as GPIO if we don't need the TVC CLK.
+
+Fixes: d17f477c5bc6 ("pinctrl: gemini: Mask and set properly")
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/pinctrl/pinctrl-gemini.c | 44 ++++++++++++++++++++++++++------
+ 1 file changed, 36 insertions(+), 8 deletions(-)
+
+diff --git a/drivers/pinctrl/pinctrl-gemini.c b/drivers/pinctrl/pinctrl-gemini.c
+index 1e484a36ff07..3535f9841861 100644
+--- a/drivers/pinctrl/pinctrl-gemini.c
++++ b/drivers/pinctrl/pinctrl-gemini.c
+@@ -591,13 +591,16 @@ static const unsigned int tvc_3512_pins[] = {
+ 	319, /* TVC_DATA[1] */
+ 	301, /* TVC_DATA[2] */
+ 	283, /* TVC_DATA[3] */
+-	265, /* TVC_CLK */
+ 	320, /* TVC_DATA[4] */
+ 	302, /* TVC_DATA[5] */
+ 	284, /* TVC_DATA[6] */
+ 	266, /* TVC_DATA[7] */
+ };
+ 
++static const unsigned int tvc_clk_3512_pins[] = {
++	265, /* TVC_CLK */
++};
++
+ /* NAND flash pins */
+ static const unsigned int nflash_3512_pins[] = {
+ 	199, 200, 201, 202, 216, 217, 218, 219, 220, 234, 235, 236, 237, 252,
+@@ -629,7 +632,7 @@ static const unsigned int pflash_3512_pins_extended[] = {
+ /* Serial flash pins CE0, CE1, DI, DO, CK */
+ static const unsigned int sflash_3512_pins[] = { 230, 231, 232, 233, 211 };
+ 
+-/* The GPIO0A (0) pin overlap with TVC and extended parallel flash */
++/* The GPIO0A (0) pin overlap with TVC CLK and extended parallel flash */
+ static const unsigned int gpio0a_3512_pins[] = { 265 };
+ 
+ /* The GPIO0B (1-4) pins overlap with TVC and ICE */
+@@ -823,7 +826,13 @@ static const struct gemini_pin_group gemini_3512_pin_groups[] = {
+ 		.num_pins = ARRAY_SIZE(tvc_3512_pins),
+ 		/* Conflict with character LCD and ICE */
+ 		.mask = LCD_PADS_ENABLE,
+-		.value = TVC_PADS_ENABLE | TVC_CLK_PAD_ENABLE,
++		.value = TVC_PADS_ENABLE,
++	},
++	{
++		.name = "tvcclkgrp",
++		.pins = tvc_clk_3512_pins,
++		.num_pins = ARRAY_SIZE(tvc_clk_3512_pins),
++		.value = TVC_CLK_PAD_ENABLE,
+ 	},
+ 	/*
+ 	 * The construction is done such that it is possible to use a serial
+@@ -860,8 +869,8 @@ static const struct gemini_pin_group gemini_3512_pin_groups[] = {
+ 		.name = "gpio0agrp",
+ 		.pins = gpio0a_3512_pins,
+ 		.num_pins = ARRAY_SIZE(gpio0a_3512_pins),
+-		/* Conflict with TVC */
+-		.mask = TVC_PADS_ENABLE,
++		/* Conflict with TVC CLK */
++		.mask = TVC_CLK_PAD_ENABLE,
+ 	},
+ 	{
+ 		.name = "gpio0bgrp",
+@@ -1531,13 +1540,16 @@ static const unsigned int tvc_3516_pins[] = {
+ 	311, /* TVC_DATA[1] */
+ 	394, /* TVC_DATA[2] */
+ 	374, /* TVC_DATA[3] */
+-	333, /* TVC_CLK */
+ 	354, /* TVC_DATA[4] */
+ 	395, /* TVC_DATA[5] */
+ 	312, /* TVC_DATA[6] */
+ 	334, /* TVC_DATA[7] */
+ };
+ 
++static const unsigned int tvc_clk_3516_pins[] = {
++	333, /* TVC_CLK */
++};
++
+ /* NAND flash pins */
+ static const unsigned int nflash_3516_pins[] = {
+ 	243, 260, 261, 224, 280, 262, 281, 264, 300, 263, 282, 301, 320, 283,
+@@ -1570,7 +1582,7 @@ static const unsigned int pflash_3516_pins_extended[] = {
+ static const unsigned int sflash_3516_pins[] = { 296, 338, 295, 359, 339 };
+ 
+ /* The GPIO0A (0-4) pins overlap with TVC and extended parallel flash */
+-static const unsigned int gpio0a_3516_pins[] = { 333, 354, 395, 312, 334 };
++static const unsigned int gpio0a_3516_pins[] = { 354, 395, 312, 334 };
+ 
+ /* The GPIO0B (5-7) pins overlap with ICE */
+ static const unsigned int gpio0b_3516_pins[] = { 375, 396, 376 };
+@@ -1602,6 +1614,9 @@ static const unsigned int gpio0j_3516_pins[] = { 359, 339 };
+ /* The GPIO0K (30,31) pins overlap with NAND flash */
+ static const unsigned int gpio0k_3516_pins[] = { 275, 298 };
+ 
++/* The GPIO0L (0) pins overlap with TVC_CLK */
++static const unsigned int gpio0l_3516_pins[] = { 333 };
++
+ /* The GPIO1A (0-4) pins that overlap with IDE and parallel flash */
+ static const unsigned int gpio1a_3516_pins[] = { 221, 200, 222, 201, 220 };
+ 
+@@ -1761,7 +1776,13 @@ static const struct gemini_pin_group gemini_3516_pin_groups[] = {
+ 		.num_pins = ARRAY_SIZE(tvc_3516_pins),
+ 		/* Conflict with character LCD */
+ 		.mask = LCD_PADS_ENABLE,
+-		.value = TVC_PADS_ENABLE | TVC_CLK_PAD_ENABLE,
++		.value = TVC_PADS_ENABLE,
++	},
++	{
++		.name = "tvcclkgrp",
++		.pins = tvc_clk_3516_pins,
++		.num_pins = ARRAY_SIZE(tvc_clk_3516_pins),
++		.value = TVC_CLK_PAD_ENABLE,
+ 	},
+ 	/*
+ 	 * The construction is done such that it is possible to use a serial
+@@ -1872,6 +1893,13 @@ static const struct gemini_pin_group gemini_3516_pin_groups[] = {
+ 		/* Conflict with parallel and NAND flash */
+ 		.value = PFLASH_PADS_DISABLE | NAND_PADS_DISABLE,
+ 	},
++	{
++		.name = "gpio0lgrp",
++		.pins = gpio0l_3516_pins,
++		.num_pins = ARRAY_SIZE(gpio0l_3516_pins),
++		/* Conflict with TVE CLK */
++		.mask = TVC_CLK_PAD_ENABLE,
++	},
+ 	{
+ 		.name = "gpio1agrp",
+ 		.pins = gpio1a_3516_pins,
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0003-pinctrl-gemini-Drop-noisy-debug-prints.patch

@@ -0,0 +1,87 @@
+From 5d1bd9669ddcd26384672891c37110046e1ac8e8 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Tue, 9 Oct 2018 10:12:24 +0200
+Subject: [PATCH 03/18] pinctrl: gemini: Drop noisy debug prints
+
+The dev_info() in the pin control driver is really just good
+for debug, so drop it.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/pinctrl/pinctrl-gemini.c | 32 ++++++++++++++++----------------
+ 1 file changed, 16 insertions(+), 16 deletions(-)
+
+diff --git a/drivers/pinctrl/pinctrl-gemini.c b/drivers/pinctrl/pinctrl-gemini.c
+index 3535f9841861..f75bf6f16a2e 100644
+--- a/drivers/pinctrl/pinctrl-gemini.c
++++ b/drivers/pinctrl/pinctrl-gemini.c
+@@ -2207,9 +2207,9 @@ static int gemini_pmx_set_mux(struct pinctrl_dev *pctldev,
+ 		return -ENODEV;
+ 	}
+ 
+-	dev_info(pmx->dev,
+-		 "ACTIVATE function \"%s\" with group \"%s\"\n",
+-		 func->name, grp->name);
++	dev_dbg(pmx->dev,
++		"ACTIVATE function \"%s\" with group \"%s\"\n",
++		func->name, grp->name);
+ 
+ 	regmap_read(pmx->map, GLOBAL_MISC_CTRL, &before);
+ 	regmap_update_bits(pmx->map, GLOBAL_MISC_CTRL,
+@@ -2240,10 +2240,10 @@ static int gemini_pmx_set_mux(struct pinctrl_dev *pctldev,
+ 				"GLOBAL MISC CTRL before: %08x, after %08x, expected %08x\n",
+ 				before, after, expected);
+ 		} else {
+-			dev_info(pmx->dev,
+-				 "padgroup %s %s\n",
+-				 gemini_padgroups[i],
+-				 enabled ? "enabled" : "disabled");
++			dev_dbg(pmx->dev,
++				"padgroup %s %s\n",
++				gemini_padgroups[i],
++				enabled ? "enabled" : "disabled");
+ 		}
+ 	}
+ 
+@@ -2262,10 +2262,10 @@ static int gemini_pmx_set_mux(struct pinctrl_dev *pctldev,
+ 				"GLOBAL MISC CTRL before: %08x, after %08x, expected %08x\n",
+ 				before, after, expected);
+ 		} else {
+-			dev_info(pmx->dev,
+-				 "padgroup %s %s\n",
+-				 gemini_padgroups[i],
+-				 enabled ? "enabled" : "disabled");
++			dev_dbg(pmx->dev,
++				"padgroup %s %s\n",
++				gemini_padgroups[i],
++				enabled ? "enabled" : "disabled");
+ 		}
+ 	}
+ 
+@@ -2492,9 +2492,9 @@ static int gemini_pinconf_group_set(struct pinctrl_dev *pctldev,
+ 			regmap_update_bits(pmx->map, GLOBAL_IODRIVE,
+ 					   grp->driving_mask,
+ 					   val);
+-			dev_info(pmx->dev,
+-				 "set group %s to %d mA drive strength mask %08x val %08x\n",
+-				 grp->name, arg, grp->driving_mask, val);
++			dev_dbg(pmx->dev,
++				"set group %s to %d mA drive strength mask %08x val %08x\n",
++				grp->name, arg, grp->driving_mask, val);
+ 			break;
+ 		default:
+ 			dev_err(pmx->dev, "invalid config param %04x\n", param);
+@@ -2585,8 +2585,8 @@ static int gemini_pmx_probe(struct platform_device *pdev)
+ 	/* Print initial state */
+ 	tmp = val;
+ 	for_each_set_bit(i, &tmp, PADS_MAXBIT) {
+-		dev_info(dev, "pad group %s %s\n", gemini_padgroups[i],
+-			 (val & BIT(i)) ? "enabled" : "disabled");
++		dev_dbg(dev, "pad group %s %s\n", gemini_padgroups[i],
++			(val & BIT(i)) ? "enabled" : "disabled");
+ 	}
+ 
+ 	/* Check if flash pin is set */
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0004-boot-sq201-from-sda1.patch

@@ -0,0 +1,25 @@
+From 95be54e285767c5209bb51df923373f78b8c4099 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Mon, 16 Jul 2018 23:36:30 +0200
+Subject: [PATCH 04/18] boot sq201 from sda1
+
+---
+ arch/arm/boot/dts/gemini-sq201.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/gemini-sq201.dts b/arch/arm/boot/dts/gemini-sq201.dts
+index 3787cf3763c4..66e2845a3edb 100644
+--- a/arch/arm/boot/dts/gemini-sq201.dts
++++ b/arch/arm/boot/dts/gemini-sq201.dts
+@@ -20,7 +20,7 @@
+ 	};
+ 
+ 	chosen {
+-		bootargs = "console=ttyS0,115200n8";
++		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
+ 		stdout-path = &uart0;
+ 	};
+ 
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0005-mtd-physmap_of-Move-custom-initialization.patch

@@ -0,0 +1,52 @@
+From 58ecb60d53d43e8d584708722a2cf851ba88f9e1 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Thu, 11 Oct 2018 19:53:40 +0200
+Subject: [PATCH 05/18] mtd: physmap_of: Move custom initialization
+
+In order to be able to assign custom complex mappings
+to the physmap_of plugin for Gemini, move the initialization
+so that the simple map is initialized before we enter the
+platform-specific functions so the latter can override
+them.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/mtd/maps/physmap_of_core.c | 15 ++++++++-------
+ 1 file changed, 8 insertions(+), 7 deletions(-)
+
+diff --git a/drivers/mtd/maps/physmap_of_core.c b/drivers/mtd/maps/physmap_of_core.c
+index 4129535b8e46..74ad753265f3 100644
+--- a/drivers/mtd/maps/physmap_of_core.c
++++ b/drivers/mtd/maps/physmap_of_core.c
+@@ -239,13 +239,6 @@ static int of_flash_probe(struct platform_device *dev)
+ 		else if (of_property_read_bool(dp, "little-endian"))
+ 			info->list[i].map.swap = CFI_LITTLE_ENDIAN;
+ 
+-		err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
+-		if (err)
+-			goto err_out;
+-		err = of_flash_probe_versatile(dev, dp, &info->list[i].map);
+-		if (err)
+-			goto err_out;
+-
+ 		err = -ENOMEM;
+ 		info->list[i].map.virt = ioremap(info->list[i].map.phys,
+ 						 info->list[i].map.size);
+@@ -257,6 +250,14 @@ static int of_flash_probe(struct platform_device *dev)
+ 
+ 		simple_map_init(&info->list[i].map);
+ 
++		/* Variants can override map accessors */
++		err = of_flash_probe_gemini(dev, dp, &info->list[i].map);
++		if (err)
++			goto err_out;
++		err = of_flash_probe_versatile(dev, dp, &info->list[i].map);
++		if (err)
++			goto err_out;
++
+ 		/*
+ 		 * On some platforms (e.g. MPC5200) a direct 1:1 mapping
+ 		 * may cause problems with JFFS2 usage, as the local bus (LPB)
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0006-mtd-physmap_of_gemini-Handle-pin-control.patch

@@ -0,0 +1,194 @@
+From 8e5e628a9de439d02914b85a48e1ac3e04ea486a Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Thu, 11 Oct 2018 20:03:49 +0200
+Subject: [PATCH 06/18] mtd: physmap_of_gemini: Handle pin control
+
+This enables the complex mapping for the Gemini and kicks in
+custom read/write functions that will wrap the existing
+simple functions in calls to enable/disable the parallel
+flash pins using pin controls.
+
+This is necessary on some hardware such as the D-Link
+DIR-685 where all flash pins are patched in/out at the same
+time, but some of the flash pins are in practice unused by
+the flash and have anyway been reused as GPIO.
+
+This concerns specifically CE1 on the Gemini. There is only
+one flash chip, so only CE0 is used, and the line for CE1
+has been reused as chip select for the emulated SPI port
+connected to the display. If we try to use the same lines
+for flash and GPIO at the same time, one of them will loose:
+the GPIO line will disappear because it gets disconnected
+from the pin when the flash group is muxed out.
+
+Fix this by introducing two pin control states named simply
+"enabled" and "disabled" and only enable the flash lines
+when absolutely necessary (during read/write/copy). This
+way, they are available for GPIO at all other times and
+the display works.
+
+Collect all the state variables in a struct named
+struct gemini_flash and allocate this struct at probe
+time.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/mtd/maps/Kconfig             |   1 +
+ drivers/mtd/maps/physmap_of_gemini.c | 105 ++++++++++++++++++++++++++-
+ 2 files changed, 105 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mtd/maps/Kconfig b/drivers/mtd/maps/Kconfig
+index afb36bff13a7..00efbf246849 100644
+--- a/drivers/mtd/maps/Kconfig
++++ b/drivers/mtd/maps/Kconfig
+@@ -89,6 +89,7 @@ config MTD_PHYSMAP_OF_GEMINI
+ 	depends on MTD_PHYSMAP_OF
+ 	depends on MFD_SYSCON
+ 	default ARCH_GEMINI
++	select MTD_COMPLEX_MAPPINGS
+ 	help
+ 	  This provides some extra DT physmap parsing for the Gemini
+ 	  platforms, some detection and setting up parallel mode on the
+diff --git a/drivers/mtd/maps/physmap_of_gemini.c b/drivers/mtd/maps/physmap_of_gemini.c
+index 830b1b7e702b..7c2b67460192 100644
+--- a/drivers/mtd/maps/physmap_of_gemini.c
++++ b/drivers/mtd/maps/physmap_of_gemini.c
+@@ -10,9 +10,11 @@
+ #include <linux/of.h>
+ #include <linux/of_device.h>
+ #include <linux/mtd/map.h>
++#include <linux/mtd/xip.h>
+ #include <linux/mfd/syscon.h>
+ #include <linux/regmap.h>
+ #include <linux/bitops.h>
++#include <linux/pinctrl/consumer.h>
+ #include "physmap_of_gemini.h"
+ 
+ /*
+@@ -49,6 +51,77 @@ static const struct of_device_id syscon_match[] = {
+ 	{ },
+ };
+ 
++struct gemini_flash {
++	struct device *dev;
++	struct pinctrl *p;
++	struct pinctrl_state *enabled_state;
++	struct pinctrl_state *disabled_state;
++};
++
++/* Static local state */
++static struct gemini_flash *gf;
++
++static void gemini_flash_enable_pins(void)
++{
++	int ret;
++
++	if (IS_ERR(gf->enabled_state))
++		return;
++	ret = pinctrl_select_state(gf->p, gf->enabled_state);
++	if (ret)
++		dev_err(gf->dev, "failed to enable pins\n");
++}
++
++static void gemini_flash_disable_pins(void)
++{
++	int ret;
++
++	if (IS_ERR(gf->disabled_state))
++		return;
++	ret = pinctrl_select_state(gf->p, gf->disabled_state);
++	if (ret)
++		dev_err(gf->dev, "failed to disable pins\n");
++}
++
++static map_word __xipram gemini_flash_map_read(struct map_info *map,
++					       unsigned long ofs)
++{
++	map_word __xipram ret;
++
++	gemini_flash_enable_pins();
++	ret = inline_map_read(map, ofs);
++	gemini_flash_disable_pins();
++
++	return ret;
++}
++
++static void __xipram gemini_flash_map_write(struct map_info *map,
++					    const map_word datum,
++					    unsigned long ofs)
++{
++	gemini_flash_enable_pins();
++	inline_map_write(map, datum, ofs);
++	gemini_flash_disable_pins();
++}
++
++static void __xipram gemini_flash_map_copy_from(struct map_info *map,
++						void *to, unsigned long from,
++						ssize_t len)
++{
++	gemini_flash_enable_pins();
++	inline_map_copy_from(map, to, from, len);
++	gemini_flash_disable_pins();
++}
++
++static void __xipram gemini_flash_map_copy_to(struct map_info *map,
++					      unsigned long to,
++					      const void *from, ssize_t len)
++{
++	gemini_flash_enable_pins();
++	inline_map_copy_to(map, to, from, len);
++	gemini_flash_disable_pins();
++}
++
+ int of_flash_probe_gemini(struct platform_device *pdev,
+ 			  struct device_node *np,
+ 			  struct map_info *map)
+@@ -62,6 +135,11 @@ int of_flash_probe_gemini(struct platform_device *pdev,
+ 	if (!of_device_is_compatible(np, "cortina,gemini-flash"))
+ 		return 0;
+ 
++	gf = devm_kzalloc(dev, sizeof(*gf), GFP_KERNEL);
++	if (!gf)
++		return -ENOMEM;
++	gf->dev = dev;
++
+ 	rmap = syscon_regmap_lookup_by_phandle(np, "syscon");
+ 	if (IS_ERR(rmap)) {
+ 		dev_err(dev, "no syscon\n");
+@@ -96,7 +174,32 @@ int of_flash_probe_gemini(struct platform_device *pdev,
+ 				 map->bankwidth * 8);
+ 	}
+ 
+-	dev_info(&pdev->dev, "initialized Gemini-specific physmap control\n");
++	gf->p = devm_pinctrl_get(dev);
++	if (IS_ERR(gf->p)) {
++		dev_err(dev, "no pinctrl handle\n");
++		ret = PTR_ERR(gf->p);
++		return ret;
++	}
++
++	gf->enabled_state = pinctrl_lookup_state(gf->p, "enabled");
++	if (IS_ERR(gf->enabled_state))
++		dev_err(dev, "no enabled pin control state\n");
++
++	gf->disabled_state = pinctrl_lookup_state(gf->p, "disabled");
++	if (IS_ERR(gf->enabled_state)) {
++		dev_err(dev, "no disabled pin control state\n");
++	} else {
++		ret = pinctrl_select_state(gf->p, gf->disabled_state);
++		if (ret)
++			dev_err(gf->dev, "failed to disable pins\n");
++	}
++
++	map->read = gemini_flash_map_read;
++	map->write = gemini_flash_map_write;
++	map->copy_from = gemini_flash_map_copy_from;
++	map->copy_to = gemini_flash_map_copy_to;
++
++	dev_info(dev, "initialized Gemini-specific physmap control\n");
+ 
+ 	return 0;
+ }
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0007-ARM-dts-Fix-up-the-D-Link-DIR-685-MTD-partition-info.patch

@@ -0,0 +1,71 @@
+From 0f6c4817471faf572b5273cdf90160790b0c3b29 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Thu, 17 May 2018 17:00:10 +0200
+Subject: [PATCH 07/18] ARM: dts: Fix up the D-Link DIR-685 MTD partition info
+
+The vendor firmware was analyzed to get the right idea about
+this flash layout. /proc/mtd contains:
+
+dev:    size   erasesize  name
+mtd0: 01e7ff40 00020000 "rootfs"
+mtd1: 01f40000 00020000 "upgrade"
+mtd2: 00040000 00020000 "rgdb"
+mtd3: 00020000 00020000 "nvram"
+mtd4: 00040000 00020000 "RedBoot"
+mtd5: 00020000 00020000 "LangPack"
+mtd6: 02000000 00020000 "flash"
+
+Here "flash" is obviously the whole device and we know "rootfs"
+is a bogus hack to point to a squashfs rootfs inside of the main
+"upgrade partition". We know "RedBoot" is the first 0x40000 of
+the flash and the "upgrade" partition follows from 0x40000 to
+0x1f8000. So we have mtd0, 1, 4 and 6 covered.
+
+Remains:
+mtd2: 00040000 00020000 "rgdb"
+mtd3: 00020000 00020000 "nvram"
+mtd5: 00020000 00020000 "LangPack"
+
+Inspecting the flash at 0x1f8000 and 0x1fa000 reveals each of
+these starting with "RGCFG1" so we assume 0x1f8000-1fbfff is
+"rgdb" of 0x40000.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ arch/arm/boot/dts/gemini-dlink-dir-685.dts | 16 ++++++----------
+ 1 file changed, 6 insertions(+), 10 deletions(-)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+index 6f258b50eb44..502a361d1fe9 100644
+--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
++++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+@@ -274,20 +274,16 @@
+ 				read-only;
+ 			};
+ 			/*
+-			 * Between the boot loader and the rootfs is the kernel
+-			 * in a custom Storlink format flashed from the boot
+-			 * menu. The rootfs is in squashfs format.
++			 * This firmware image contains the kernel catenated
++			 * with the squashfs root filesystem. For some reason
++			 * this is called "upgrade" on the vendor system.
+ 			 */
+-			partition@1800c0 {
+-				label = "rootfs";
+-				reg = <0x001800c0 0x01dbff40>;
+-				read-only;
+-			};
+-			partition@1f40000 {
++			partition@40000 {
+ 				label = "upgrade";
+-				reg = <0x01f40000 0x00040000>;
++				reg = <0x00040000 0x01f40000>;
+ 				read-only;
+ 			};
++			/* RGDB, Residental Gateway Database? */
+ 			partition@1f80000 {
+ 				label = "rgdb";
+ 				reg = <0x01f80000 0x00040000>;
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0008-ARM-dts-Enable-Gemini-flash-access.patch

@@ -0,0 +1,169 @@
+From 74631102645df8984acbdf67b731e4d437f27fed Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Thu, 11 Oct 2018 20:06:23 +0200
+Subject: [PATCH 08/18] ARM: dts: Enable Gemini flash access
+
+Some Gemini platforms have a parallel NOR flash which conflicts
+with use cases reusing some of the flash lines (such as CE1)
+for GPIO.
+
+Fix this on the D-Link DIR-685 and Itian SQ201 by creating
+"enabled" and "disabled" states for the flash pin control
+handle, and rely on the flash handling code to switch this
+in and out when accessed so these lines can be used
+for GPIO when flash is not accessed, and enable flash
+access.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ arch/arm/boot/dts/gemini-dlink-dir-685.dts | 35 +++++++++++++++-------
+ arch/arm/boot/dts/gemini-sq201.dts         | 31 ++++++++++---------
+ 2 files changed, 41 insertions(+), 25 deletions(-)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+index 502a361d1fe9..318e9b2ba7dc 100644
+--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
++++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+@@ -64,7 +64,6 @@
+ 		gpio-sck = <&gpio1 5 GPIO_ACTIVE_HIGH>;
+ 		gpio-miso = <&gpio1 8 GPIO_ACTIVE_HIGH>;
+ 		gpio-mosi = <&gpio1 7 GPIO_ACTIVE_HIGH>;
+-		/* Collides with pflash CE1, not so cool */
+ 		cs-gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+ 		num-chipselects = <1>;
+ 
+@@ -253,15 +252,18 @@
+ 	soc {
+ 		flash@30000000 {
+ 			/*
+-			 * Flash access is by default disabled, because it
+-			 * collides with the Chip Enable signal for the display
+-			 * panel, that reuse the parallel flash Chip Select 1
+-			 * (CS1). Enabling flash makes graphics stop working.
+-			 *
+-			 * We might be able to hack around this by letting
+-			 * GPIO poke around in the flash controller registers.
++			 * Flash access collides with the Chip Enable signal for
++			 * the display panel, that reuse the parallel flash Chip
++			 * Select 1 (CS1). We switch the pin control state so we
++			 * enable these pins for flash access only when we need
++			 * then, and when disabled they can be used for GPIO which
++			 * is what the display panel needs.
+ 			 */
+-			/* status = "okay"; */
++			status = "okay";
++			pinctrl-names = "enabled", "disabled";
++			pinctrl-0 = <&pflash_default_pins>;
++			pinctrl-1 = <&pflash_disabled_pins>;
++
+ 			/* 32MB of flash */
+ 			reg = <0x30000000 0x02000000>;
+ 
+@@ -327,7 +329,6 @@
+ 						"gpio0cgrp",
+ 						"gpio0egrp",
+ 						"gpio0fgrp",
+-						"gpio0ggrp",
+ 						"gpio0hgrp";
+ 					};
+ 				};
+@@ -342,6 +343,18 @@
+ 						groups = "gpio1bgrp";
+ 					};
+ 				};
++				/*
++				 * These GPIO groups will be mapped in over some
++				 * of the flash pins when the flash is not in
++				 * active use.
++				 */
++				pflash_disabled_pins: pinctrl-pflash-disabled {
++					mux {
++						function = "gpio0";
++						groups = "gpio0ggrp", "gpio0igrp", "gpio0jgrp",
++							 "gpio0kgrp";
++					};
++				};
+ 				pinctrl-gmii {
+ 					mux {
+ 						function = "gmii";
+@@ -430,7 +443,7 @@
+ 		};
+ 
+ 		display-controller@6a000000 {
+-			status = "okay";
++			status = "disabled";
+ 
+ 			port@0 {
+ 				reg = <0>;
+diff --git a/arch/arm/boot/dts/gemini-sq201.dts b/arch/arm/boot/dts/gemini-sq201.dts
+index 66e2845a3edb..79df6ce5bc6a 100644
+--- a/arch/arm/boot/dts/gemini-sq201.dts
++++ b/arch/arm/boot/dts/gemini-sq201.dts
+@@ -41,14 +41,12 @@
+ 		compatible = "gpio-leds";
+ 		led-green-info {
+ 			label = "sq201:green:info";
+-			/* Conflict with parallel flash */
+ 			gpios = <&gpio0 20 GPIO_ACTIVE_HIGH>;
+ 			default-state = "on";
+ 			linux,default-trigger = "heartbeat";
+ 		};
+ 		led-green-usb {
+ 			label = "sq201:green:usb";
+-			/* Conflict with parallel and NAND flash */
+ 			gpios = <&gpio0 31 GPIO_ACTIVE_HIGH>;
+ 			default-state = "off";
+ 			linux,default-trigger = "usb-host";
+@@ -126,15 +124,10 @@
+ 
+ 	soc {
+ 		flash@30000000 {
+-			/*
+-			 * Flash access can be enabled, with the side effect
+-			 * of disabling access to GPIO LED on GPIO0[20] which
+-			 * reuse one of the parallel flash chip select lines.
+-			 * Also the default firmware on the machine has the
+-			 * problem that since it uses the flash, the two LEDS
+-			 * on the right become numb.
+-			 */
+-			/* status = "okay"; */
++			status = "okay";
++			pinctrl-names = "enabled", "disabled";
++			pinctrl-0 = <&pflash_default_pins>;
++			pinctrl-1 = <&pflash_disabled_pins>;
+ 			/* 16MB of flash */
+ 			reg = <0x30000000 0x01000000>;
+ 
+@@ -184,9 +177,7 @@
+ 					mux {
+ 						function = "gpio0";
+ 						groups = "gpio0fgrp",
+-						"gpio0ggrp",
+-						"gpio0hgrp",
+-						"gpio0kgrp";
++						"gpio0hgrp";
+ 					};
+ 				};
+ 				/*
+@@ -199,6 +190,18 @@
+ 						groups = "gpio1dgrp";
+ 					};
+ 				};
++				/*
++				 * These GPIO groups will be mapped in over some
++				 * of the flash pins when the flash is not in
++				 * active use.
++				 */
++				pflash_disabled_pins: pinctrl-pflash-disabled {
++					mux {
++						function = "gpio0";
++						groups = "gpio0ggrp", "gpio0igrp", "gpio0jgrp",
++							 "gpio0kgrp";
++					};
++				};
+ 				pinctrl-gmii {
+ 					mux {
+ 						function = "gmii";
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0009-mtd-partitions-Add-RedBoot-FIS-DT-bindings.patch

@@ -0,0 +1,51 @@
+From 3dfe7ff875a64b83de21dad6365225f41f3cdb17 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 19 Oct 2018 08:22:18 +0200
+Subject: [PATCH 09/18] mtd: partitions: Add RedBoot FIS DT bindings
+
+This adds device tree bindings for the RedBoot FIS partition
+format.
+
+Cc: [email protected]
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ .../bindings/mtd/partitions/redboot-fis.txt   | 27 +++++++++++++++++++
+ 1 file changed, 27 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt
+
+diff --git a/Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt b/Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt
+new file mode 100644
+index 000000000000..fd0ebe4e3415
+--- /dev/null
++++ b/Documentation/devicetree/bindings/mtd/partitions/redboot-fis.txt
+@@ -0,0 +1,27 @@
++RedBoot FLASH Image System (FIS) Partitions
++===========================================
++
++The FLASH Image System (FIS) directory is a flash description
++format closely associated with the RedBoot boot loader.
++
++It uses one single flash eraseblock in the flash to store an index of
++all images in the flash.
++
++This block size will vary depending on flash but is typically
++32 KB in size.
++
++Required properties:
++- compatible : (required) must be "redboot-fis"
++- fis-index-block : (required) a index to the eraseblock containing
++  the FIS directory on this device. On a flash memory with 32KB
++  eraseblocks, 0 means the first eraseblock at 0x00000000, 1 means the
++  second eraseblock at 0x00008000 and so on.
++
++Example:
++
++flash@0 {
++	partitions {
++		compatible = "redboot-fis";
++		fis-index-block = <0>;
++	};
++};
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0010-mtd-partitions-Add-second-compatible-for-redboot.patch

@@ -0,0 +1,77 @@
+From e1b9d122030220d8b8176d9e23568e26fa2f9d23 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 19 Oct 2018 08:56:41 +0200
+Subject: [PATCH 10/18] mtd: partitions: Add second compatible for redboot
+
+Simple backport of the upstream redboot partition table
+bindings that are used in the mainline Linux kernel.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/mtd/redboot.c | 29 ++++++++++++++++++++++++++++-
+ 1 file changed, 28 insertions(+), 1 deletion(-)
+
+diff --git a/drivers/mtd/redboot.c b/drivers/mtd/redboot.c
+index fe3df7437483..e9c21579ba35 100644
+--- a/drivers/mtd/redboot.c
++++ b/drivers/mtd/redboot.c
+@@ -25,7 +25,7 @@
+ #include <linux/slab.h>
+ #include <linux/init.h>
+ #include <linux/vmalloc.h>
+-
++#include <linux/of.h>
+ #include <linux/mtd/mtd.h>
+ #include <linux/mtd/partitions.h>
+ #include <linux/module.h>
+@@ -56,6 +56,31 @@ static inline int redboot_checksum(struct fis_image_desc *img)
+ 	return 1;
+ }
+ 
++#ifdef CONFIG_OF
++static void parse_redboot_of(struct mtd_info *master)
++{
++	struct device_node *np;
++	u32 dirblock;
++	int ret;
++
++	np = mtd_get_of_node(master);
++	if (!np)
++		return;
++	ret = of_property_read_u32(np, "fis-index-block", &dirblock);
++	if (ret)
++		return;
++	/*
++	 * Assign the block found in the device tree to the local
++	 * directory block pointer.
++	 */
++	directory = dirblock;
++}
++#else
++static void parse_redboot_of(struct mtd_info *master)
++{
++}
++#endif
++
+ static int parse_redboot_partitions(struct mtd_info *master,
+ 				    const struct mtd_partition **pparts,
+ 				    struct mtd_part_parser_data *data)
+@@ -75,6 +100,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
+ #ifdef CONFIG_MTD_REDBOOT_PARTS_UNALLOCATED
+ 	static char nullstring[] = "unallocated";
+ #endif
++	parse_redboot_of(master);
+ 
+ 	if ( directory < 0 ) {
+ 		offset = master->size + directory * master->erasesize;
+@@ -298,6 +324,7 @@ static int parse_redboot_partitions(struct mtd_info *master,
+ 
+ static const struct of_device_id redboot_parser_of_match_table[] = {
+ 	{ .compatible = "ecoscentric,redboot-fis-partitions" },
++	{ .compatible = "redboot-fis" },
+ 	{},
+ };
+ MODULE_DEVICE_TABLE(of, redboot_parser_of_match_table);
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0011-ARM-dts-Fix-up-SQ201-flash-access.patch

@@ -0,0 +1,73 @@
+From 186692e51e6c40d8ebd05d25f009098eb00f8110 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 19 Oct 2018 09:00:51 +0200
+Subject: [PATCH 11/18] ARM: dts: Fix up SQ201 flash access
+
+This sets the partition information on the SQ201 to be read
+out from the RedBoot partition table, removes the static
+partition table and sets our boot options to mount root from
+/dev/mtdblock2 where the initramfs resides.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ arch/arm/boot/dts/gemini-sq201.dts | 37 ++++--------------------------
+ 1 file changed, 5 insertions(+), 32 deletions(-)
+
+diff --git a/arch/arm/boot/dts/gemini-sq201.dts b/arch/arm/boot/dts/gemini-sq201.dts
+index 79df6ce5bc6a..c5bb24102b75 100644
+--- a/arch/arm/boot/dts/gemini-sq201.dts
++++ b/arch/arm/boot/dts/gemini-sq201.dts
+@@ -20,7 +20,7 @@
+ 	};
+ 
+ 	chosen {
+-		bootargs = "console=ttyS0,115200n8 root=/dev/sda1 rw rootwait";
++		bootargs = "console=ttyS0,115200n8 root=/dev/mtdblock2 rw rootfstype=squashfs,jffs2 rootwait";
+ 		stdout-path = &uart0;
+ 	};
+ 
+@@ -131,37 +131,10 @@
+ 			/* 16MB of flash */
+ 			reg = <0x30000000 0x01000000>;
+ 
+-			partition@0 {
+-				label = "RedBoot";
+-				reg = <0x00000000 0x00120000>;
+-				read-only;
+-			};
+-			partition@120000 {
+-				label = "Kernel";
+-				reg = <0x00120000 0x00200000>;
+-			};
+-			partition@320000 {
+-				label = "Ramdisk";
+-				reg = <0x00320000 0x00600000>;
+-			};
+-			partition@920000 {
+-				label = "Application";
+-				reg = <0x00920000 0x00600000>;
+-			};
+-			partition@f20000 {
+-				label = "VCTL";
+-				reg = <0x00f20000 0x00020000>;
+-				read-only;
+-			};
+-			partition@f40000 {
+-				label = "CurConf";
+-				reg = <0x00f40000 0x000a0000>;
+-				read-only;
+-			};
+-			partition@fe0000 {
+-				label = "FIS directory";
+-				reg = <0x00fe0000 0x00020000>;
+-				read-only;
++			partitions {
++				compatible = "redboot-fis";
++				/* Eraseblock at 0xfe0000 */
++				fis-index-block = <0x1fc>;
+ 			};
+ 		};
+ 
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0012-ARM-dts-Blank-D-Link-DIR-685-console.patch

@@ -0,0 +1,30 @@
+From ec8b953c92c1dd0e0f1450f4b9a32c60125d4510 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Mon, 27 Aug 2018 00:10:39 +0200
+Subject: [PATCH 12/18] ARM: dts: Blank D-Link DIR-685 console
+
+Leaving this NAS with display and backlight on heats it up
+and dissipates power. Turn off the screen after 4 minutes,
+it comes back on when a user touches the keys.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ arch/arm/boot/dts/gemini-dlink-dir-685.dts | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+index 318e9b2ba7dc..850a605124eb 100644
+--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
++++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+@@ -20,7 +20,7 @@
+ 	};
+ 
+ 	chosen {
+-		bootargs = "console=ttyS0,19200n8 root=/dev/sda1 rw rootwait";
++		bootargs = "console=ttyS0,19200n8 root=/dev/sda1 rw rootwait consoleblank=300";
+ 		stdout-path = "uart0:19200n8";
+ 	};
+ 
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0013-usb-host-fotg2-add-silicon-clock-handling.patch

@@ -0,0 +1,123 @@
+From e76906e8e9dfaeeb22a37706aca493b86e4367bd Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 21 Apr 2017 20:46:12 +0200
+Subject: [PATCH 13/18] usb: host: fotg2: add silicon clock handling
+
+When used in a system with software-controlled silicon clocks,
+the FOTG210 needs to grab, prepare and enable the clock.
+
+This is needed on for example the Cortina Gemini, where the
+platform will by default gate off the clock unless the
+peripheral (in this case the USB driver) grabs and enables
+the clock.
+
+If there is no clock available on the platform, we live
+without it. Make sure to percolate probe deferrals.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ChangeLog v1->v2:
+- Handle probe deferrals on the clock controller, no matter
+  how unlikely they are.
+- Send the patch to get Gemini USB rolling and try to get some
+  stuff upstream, this patch should be fine on its own.
+---
+ drivers/usb/host/fotg210-hcd.c | 33 +++++++++++++++++++++++++++++----
+ drivers/usb/host/fotg210.h     |  3 +++
+ 2 files changed, 32 insertions(+), 4 deletions(-)
+
+diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
+index e64eb47770c8..058ff82ea789 100644
+--- a/drivers/usb/host/fotg210-hcd.c
++++ b/drivers/usb/host/fotg210-hcd.c
+@@ -31,6 +31,7 @@
+ #include <linux/uaccess.h>
+ #include <linux/platform_device.h>
+ #include <linux/io.h>
++#include <linux/clk.h>
+ 
+ #include <asm/byteorder.h>
+ #include <asm/irq.h>
+@@ -5596,7 +5597,7 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
+ 	hcd->regs = devm_ioremap_resource(&pdev->dev, res);
+ 	if (IS_ERR(hcd->regs)) {
+ 		retval = PTR_ERR(hcd->regs);
+-		goto failed;
++		goto failed_put_hcd;
+ 	}
+ 
+ 	hcd->rsrc_start = res->start;
+@@ -5606,22 +5607,42 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
+ 
+ 	fotg210->caps = hcd->regs;
+ 
++	/* It's OK not to supply this clock */
++	fotg210->pclk = clk_get(dev, "PCLK");
++	if (!IS_ERR(fotg210->pclk)) {
++		retval = clk_prepare_enable(fotg210->pclk);
++		if (retval) {
++			dev_err(dev, "failed to enable PCLK\n");
++			goto failed_put_hcd;
++		}
++	} else if (PTR_ERR(fotg210->pclk) == -EPROBE_DEFER) {
++		/*
++		 * Percolate deferrals, for anything else,
++		 * just live without the clocking.
++		 */
++		retval = PTR_ERR(fotg210->pclk);
++		goto failed_dis_clk;
++	}
++
+ 	retval = fotg210_setup(hcd);
+ 	if (retval)
+-		goto failed;
++		goto failed_dis_clk;
+ 
+ 	fotg210_init(fotg210);
+ 
+ 	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ 	if (retval) {
+ 		dev_err(dev, "failed to add hcd with err %d\n", retval);
+-		goto failed;
++		goto failed_dis_clk;
+ 	}
+ 	device_wakeup_enable(hcd->self.controller);
+ 
+ 	return retval;
+ 
+-failed:
++failed_dis_clk:
++	if (!IS_ERR(fotg210->pclk))
++		clk_disable_unprepare(fotg210->pclk);
++failed_put_hcd:
+ 	usb_put_hcd(hcd);
+ fail_create_hcd:
+ 	dev_err(dev, "init %s fail, %d\n", dev_name(dev), retval);
+@@ -5637,6 +5658,10 @@ static int fotg210_hcd_remove(struct platform_device *pdev)
+ {
+ 	struct device *dev = &pdev->dev;
+ 	struct usb_hcd *hcd = dev_get_drvdata(dev);
++	struct fotg210_hcd *fotg210 = hcd_to_fotg210(hcd);
++
++	if (!IS_ERR(fotg210->pclk))
++		clk_disable_unprepare(fotg210->pclk);
+ 
+ 	if (!hcd)
+ 		return 0;
+diff --git a/drivers/usb/host/fotg210.h b/drivers/usb/host/fotg210.h
+index 7fcd785c7bc8..28f6467c0cbf 100644
+--- a/drivers/usb/host/fotg210.h
++++ b/drivers/usb/host/fotg210.h
+@@ -182,6 +182,9 @@ struct fotg210_hcd {			/* one per controller */
+ #	define COUNT(x)
+ #endif
+ 
++	/* silicon clock */
++	struct clk		*pclk;
++
+ 	/* debug files */
+ 	struct dentry		*debug_dir;
+ };
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0014-usb-host-add-DT-bindings-for-faraday-fotg2.patch

@@ -0,0 +1,69 @@
+From f9cfc45c57227448d4239e9582258587aacf34e7 Mon Sep 17 00:00:00 2001
+From: Hans Ulli Kroll <[email protected]>
+Date: Wed, 8 Feb 2017 21:00:09 +0100
+Subject: [PATCH 14/18] usb: host: add DT bindings for faraday fotg2
+
+This adds device tree bindings for the Faraday FOTG2
+dual-mode host controller.
+
+Cc: [email protected]
+Signed-off-by: Hans Ulli Kroll <[email protected]>
+Acked-by: Rob Herring <[email protected]>
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ChangeLog v1->v2:
+- Changed "OTH" to "OTG"
+- Collected Rob's ACK.
+- I don't see any problem with these bindings, but IIRC Hans
+  had some reservations for the OTG mode, maybe we can strip
+  some properties like the mini-usb thing and use as a starter
+  so we can add host mode at least?
+---
+ .../bindings/usb/faraday,fotg210.txt          | 35 +++++++++++++++++++
+ 1 file changed, 35 insertions(+)
+ create mode 100644 Documentation/devicetree/bindings/usb/faraday,fotg210.txt
+
+diff --git a/Documentation/devicetree/bindings/usb/faraday,fotg210.txt b/Documentation/devicetree/bindings/usb/faraday,fotg210.txt
+new file mode 100644
+index 000000000000..06a2286e2054
+--- /dev/null
++++ b/Documentation/devicetree/bindings/usb/faraday,fotg210.txt
+@@ -0,0 +1,35 @@
++Faraday FOTG Host controller
++
++This OTG-capable USB host controller is found in Cortina Systems
++Gemini and other SoC products.
++
++Required properties:
++- compatible: should be one of:
++  "faraday,fotg210"
++  "cortina,gemini-usb", "faraday,fotg210"
++- reg: should contain one register range i.e. start and length
++- interrupts: description of the interrupt line
++
++Optional properties:
++- clocks: should contain the IP block clock
++- clock-names: should be "PCLK" for the IP block clock
++
++Required properties for "cortina,gemini-usb" compatible:
++- syscon: a phandle to the system controller to access PHY registers
++
++Optional properties for "cortina,gemini-usb" compatible:
++- cortina,gemini-mini-b: boolean property that indicates that a Mini-B
++  OTG connector is in use
++- wakeup-source: see power/wakeup-source.txt
++
++Example for Gemini:
++
++usb@68000000 {
++	compatible = "cortina,gemini-usb", "faraday,fotg210";
++	reg = <0x68000000 0x1000>;
++	interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
++	clocks = <&cc 12>;
++	clock-names = "PCLK";
++	syscon = <&syscon>;
++	wakeup-source;
++};
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0015-usb-host-fotg2-add-device-tree-probing.patch

@@ -0,0 +1,48 @@
+From 8f45c69ba80a993a6dba2397825b27e11fa9dea7 Mon Sep 17 00:00:00 2001
+From: Hans Ulli Kroll <[email protected]>
+Date: Thu, 9 Feb 2017 15:20:49 +0100
+Subject: [PATCH 15/18] usb: host: fotg2: add device tree probing
+
+Add device tree probing to the fotg2 driver.
+
+Signed-off-by: Hans Ulli Kroll <[email protected]>
+[Drop DMA mask coercion, drivers/of/platform.c does the job]
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/usb/host/fotg210-hcd.c | 10 ++++++++++
+ 1 file changed, 10 insertions(+)
+
+diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
+index 058ff82ea789..6e4b40cd5916 100644
+--- a/drivers/usb/host/fotg210-hcd.c
++++ b/drivers/usb/host/fotg210-hcd.c
+@@ -10,6 +10,7 @@
+  * Most of code borrowed from the Linux-3.7 EHCI driver
+  */
+ #include <linux/module.h>
++#include <linux/of.h>
+ #include <linux/device.h>
+ #include <linux/dmapool.h>
+ #include <linux/kernel.h>
+@@ -5672,9 +5673,18 @@ static int fotg210_hcd_remove(struct platform_device *pdev)
+ 	return 0;
+ }
+ 
++#ifdef CONFIG_OF
++static const struct of_device_id fotg210_of_match[] = {
++	{ .compatible = "faraday,fotg210" },
++	{},
++};
++MODULE_DEVICE_TABLE(of, fotg210_of_match);
++#endif
++
+ static struct platform_driver fotg210_hcd_driver = {
+ 	.driver = {
+ 		.name   = "fotg210-hcd",
++		.of_match_table = of_match_ptr(fotg210_of_match),
+ 	},
+ 	.probe  = fotg210_hcd_probe,
+ 	.remove = fotg210_hcd_remove,
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0016-usb-host-fotg2-add-Gemini-specific-handling.patch

@@ -0,0 +1,138 @@
+From b331ae758123ba20ba41199e007ac33fc0f242e3 Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 21 Apr 2017 22:19:00 +0200
+Subject: [PATCH 16/18] usb: host: fotg2: add Gemini-specific handling
+
+The Cortina Systems Gemini has bolted on a PHY inside the
+silicon that can be handled by six bits in a MISC register in
+the system controller.
+
+If we are running on Gemini, look up a syscon regmap through
+a phandle and enable VBUS and optionally the Mini-B connector.
+
+If the device is flagged as "wakeup-source" using the standard
+DT bindings, we also enable this in the global controller for
+respective port.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/usb/host/Kconfig       |  1 +
+ drivers/usb/host/fotg210-hcd.c | 76 ++++++++++++++++++++++++++++++++++
+ 2 files changed, 77 insertions(+)
+
+diff --git a/drivers/usb/host/Kconfig b/drivers/usb/host/Kconfig
+index 1a4ea98cac2a..308d514c9a2a 100644
+--- a/drivers/usb/host/Kconfig
++++ b/drivers/usb/host/Kconfig
+@@ -372,6 +372,7 @@ config USB_ISP1362_HCD
+ config USB_FOTG210_HCD
+ 	tristate "FOTG210 HCD support"
+ 	depends on USB && HAS_DMA && HAS_IOMEM
++	select MFD_SYSCON
+ 	---help---
+ 	  Faraday FOTG210 is an OTG controller which can be configured as
+ 	  an USB2.0 host. It is designed to meet USB2.0 EHCI specification
+diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
+index 6e4b40cd5916..5abb07f4136f 100644
+--- a/drivers/usb/host/fotg210-hcd.c
++++ b/drivers/usb/host/fotg210-hcd.c
+@@ -33,6 +33,10 @@
+ #include <linux/platform_device.h>
+ #include <linux/io.h>
+ #include <linux/clk.h>
++#include <linux/bitops.h>
++/* For Cortina Gemini */
++#include <linux/mfd/syscon.h>
++#include <linux/regmap.h>
+ 
+ #include <asm/byteorder.h>
+ #include <asm/irq.h>
+@@ -5554,6 +5558,72 @@ static void fotg210_init(struct fotg210_hcd *fotg210)
+ 	iowrite32(value, &fotg210->regs->otgcsr);
+ }
+ 
++/*
++ * Gemini-specific initialization function, only executed on the
++ * Gemini SoC using the global misc control register.
++ */
++#define GEMINI_GLOBAL_MISC_CTRL		0x30
++#define GEMINI_MISC_USB0_WAKEUP		BIT(14)
++#define GEMINI_MISC_USB1_WAKEUP		BIT(15)
++#define GEMINI_MISC_USB0_VBUS_ON	BIT(22)
++#define GEMINI_MISC_USB1_VBUS_ON	BIT(23)
++#define GEMINI_MISC_USB0_MINI_B		BIT(29)
++#define GEMINI_MISC_USB1_MINI_B		BIT(30)
++
++static int fotg210_gemini_init(struct device *dev, struct usb_hcd *hcd)
++{
++	struct device_node *np = dev->of_node;
++	struct regmap *map;
++	bool mini_b;
++	bool wakeup;
++	u32 mask, val;
++	int ret;
++
++	map = syscon_regmap_lookup_by_phandle(np, "syscon");
++	if (IS_ERR(map)) {
++		dev_err(dev, "no syscon\n");
++		return PTR_ERR(map);
++	}
++	mini_b = of_property_read_bool(np, "cortina,gemini-mini-b");
++	wakeup = of_property_read_bool(np, "wakeup-source");
++
++	/*
++	 * Figure out if this is USB0 or USB1 by simply checking the
++	 * physical base address.
++	 */
++	mask = 0;
++	if (hcd->rsrc_start == 0x69000000) {
++		val = GEMINI_MISC_USB1_VBUS_ON;
++		if (mini_b)
++			val |= GEMINI_MISC_USB1_MINI_B;
++		else
++			mask |= GEMINI_MISC_USB1_MINI_B;
++		if (wakeup)
++			val |= GEMINI_MISC_USB1_WAKEUP;
++		else
++			mask |= GEMINI_MISC_USB1_WAKEUP;
++	} else {
++		val = GEMINI_MISC_USB0_VBUS_ON;
++		if (mini_b)
++			val |= GEMINI_MISC_USB0_MINI_B;
++		else
++			mask |= GEMINI_MISC_USB0_MINI_B;
++		if (wakeup)
++			val |= GEMINI_MISC_USB0_WAKEUP;
++		else
++			mask |= GEMINI_MISC_USB0_WAKEUP;
++	}
++
++	ret = regmap_update_bits(map, GEMINI_GLOBAL_MISC_CTRL, mask, val);
++	if (ret) {
++		dev_err(dev, "failed to initialize Gemini PHY\n");
++		return ret;
++	}
++
++	dev_info(dev, "initialized Gemini PHY\n");
++	return 0;
++}
++
+ /**
+  * fotg210_hcd_probe - initialize faraday FOTG210 HCDs
+  *
+@@ -5631,6 +5701,12 @@ static int fotg210_hcd_probe(struct platform_device *pdev)
+ 
+ 	fotg210_init(fotg210);
+ 
++	if (of_device_is_compatible(dev->of_node, "cortina,gemini-usb")) {
++		retval = fotg210_gemini_init(dev, hcd);
++		if (retval)
++			goto failed_dis_clk;
++	}
++
+ 	retval = usb_add_hcd(hcd, irq, IRQF_SHARED);
+ 	if (retval) {
+ 		dev_err(dev, "failed to add hcd with err %d\n", retval);
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0017-usb-host-fotg2-restart-hcd-after-port-reset.patch

@@ -0,0 +1,32 @@
+From b9d300b5aea18f2e992201d182d939030130aab2 Mon Sep 17 00:00:00 2001
+From: Hans Ulli Kroll <[email protected]>
+Date: Sat, 14 Apr 2018 18:49:57 +0200
+Subject: [PATCH 17/18] usb: host: fotg2: restart hcd after port reset
+
+on Gemini SoC FOTG2 stalls after port reset
+rerstart the hcd.
+
+Signed-off-by: Hans Ulli Kroll <[email protected]>
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ drivers/usb/host/fotg210-hcd.c | 4 ++++
+ 1 file changed, 4 insertions(+)
+
+diff --git a/drivers/usb/host/fotg210-hcd.c b/drivers/usb/host/fotg210-hcd.c
+index 5abb07f4136f..d15e835c4b1f 100644
+--- a/drivers/usb/host/fotg210-hcd.c
++++ b/drivers/usb/host/fotg210-hcd.c
+@@ -1633,6 +1633,10 @@ static int fotg210_hub_control(struct usb_hcd *hcd, u16 typeReq, u16 wValue,
+ 			/* see what we found out */
+ 			temp = check_reset_complete(fotg210, wIndex, status_reg,
+ 					fotg210_readl(fotg210, status_reg));
++
++			/* restart schedule */
++			fotg210->command |= CMD_RUN;
++			fotg210_writel(fotg210, fotg210->command, &fotg210->regs->command);
+ 		}
+ 
+ 		if (!(temp & (PORT_RESUME|PORT_RESET))) {
+-- 
+2.19.2
+

target/linux/gemini/patches-4.19/0018-ARM-dts-Add-the-FOTG210-USB-host-to-Gemini-boards.patch

@@ -0,0 +1,210 @@
+From 1ff9a279dbeb0034929042faef186ce934474c2b Mon Sep 17 00:00:00 2001
+From: Linus Walleij <[email protected]>
+Date: Fri, 21 Apr 2017 20:50:22 +0200
+Subject: [PATCH 18/18] ARM: dts: Add the FOTG210 USB host to Gemini boards
+
+This adds the FOTG210 USB host controller to the Gemini
+device trees. In the main SoC DTSI it is flagged as disabled
+and then it is selectively enabled on the devices that utilize
+it.
+
+Signed-off-by: Linus Walleij <[email protected]>
+---
+ChangeLog v1->v2:
+- Rebased to kernel v4.19-rc1
+- Drop pinctrl-0 handle from the second USB port
+- Add comment on how to deal with the USB pin control
+---
+ arch/arm/boot/dts/gemini-dlink-dir-685.dts |  8 ++++++
+ arch/arm/boot/dts/gemini-nas4220b.dts      |  8 ++++++
+ arch/arm/boot/dts/gemini-rut1xx.dts        | 20 ++++++++++++++
+ arch/arm/boot/dts/gemini-sl93512r.dts      |  8 ++++++
+ arch/arm/boot/dts/gemini-sq201.dts         |  8 ++++++
+ arch/arm/boot/dts/gemini-wbd111.dts        |  8 ++++++
+ arch/arm/boot/dts/gemini-wbd222.dts        |  8 ++++++
+ arch/arm/boot/dts/gemini.dtsi              | 32 ++++++++++++++++++++++
+ 8 files changed, 100 insertions(+)
+
+diff --git a/arch/arm/boot/dts/gemini-dlink-dir-685.dts b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+index 850a605124eb..848b16375873 100644
+--- a/arch/arm/boot/dts/gemini-dlink-dir-685.dts
++++ b/arch/arm/boot/dts/gemini-dlink-dir-685.dts
+@@ -452,5 +452,13 @@
+ 				};
+ 			};
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-nas4220b.dts b/arch/arm/boot/dts/gemini-nas4220b.dts
+index 963ea890c87f..53b65ebe8454 100644
+--- a/arch/arm/boot/dts/gemini-nas4220b.dts
++++ b/arch/arm/boot/dts/gemini-nas4220b.dts
+@@ -204,5 +204,13 @@
+ 		ata@63400000 {
+ 			status = "okay";
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-rut1xx.dts b/arch/arm/boot/dts/gemini-rut1xx.dts
+index eb4f0bf074da..b2354c215a84 100644
+--- a/arch/arm/boot/dts/gemini-rut1xx.dts
++++ b/arch/arm/boot/dts/gemini-rut1xx.dts
+@@ -124,5 +124,25 @@
+ 				/* Not used in this platform */
+ 			};
+ 		};
++
++		ethernet@60000000 {
++			status = "okay";
++
++			ethernet-port@0 {
++				phy-mode = "rgmii";
++				phy-handle = <&phy0>;
++			};
++			ethernet-port@1 {
++				/* Not used in this platform */
++			};
++		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-sl93512r.dts b/arch/arm/boot/dts/gemini-sl93512r.dts
+index ebefb7297379..2bb953440793 100644
+--- a/arch/arm/boot/dts/gemini-sl93512r.dts
++++ b/arch/arm/boot/dts/gemini-sl93512r.dts
+@@ -324,5 +324,13 @@
+ 		ata@63400000 {
+ 			status = "okay";
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-sq201.dts b/arch/arm/boot/dts/gemini-sq201.dts
+index c5bb24102b75..ecbc27d93b2d 100644
+--- a/arch/arm/boot/dts/gemini-sq201.dts
++++ b/arch/arm/boot/dts/gemini-sq201.dts
+@@ -292,5 +292,13 @@
+ 		ata@63000000 {
+ 			status = "okay";
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-wbd111.dts b/arch/arm/boot/dts/gemini-wbd111.dts
+index 29af86cd10f7..6831d2aed17a 100644
+--- a/arch/arm/boot/dts/gemini-wbd111.dts
++++ b/arch/arm/boot/dts/gemini-wbd111.dts
+@@ -171,5 +171,13 @@
+ 				/* Not used in this platform */
+ 			};
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini-wbd222.dts b/arch/arm/boot/dts/gemini-wbd222.dts
+index 24e6ae3616f7..ed38d48ef5f6 100644
+--- a/arch/arm/boot/dts/gemini-wbd222.dts
++++ b/arch/arm/boot/dts/gemini-wbd222.dts
+@@ -183,5 +183,13 @@
+ 				phy-handle = <&phy1>;
+ 			};
+ 		};
++
++		usb@68000000 {
++			status = "okay";
++		};
++
++		usb@69000000 {
++			status = "okay";
++		};
+ 	};
+ };
+diff --git a/arch/arm/boot/dts/gemini.dtsi b/arch/arm/boot/dts/gemini.dtsi
+index eb752e9495de..8cf67b11751f 100644
+--- a/arch/arm/boot/dts/gemini.dtsi
++++ b/arch/arm/boot/dts/gemini.dtsi
+@@ -409,5 +409,37 @@
+ 			#size-cells = <0>;
+ 			status = "disabled";
+ 		};
++
++		usb@68000000 {
++			compatible = "cortina,gemini-usb", "faraday,fotg210";
++			reg = <0x68000000 0x1000>;
++			interrupts = <10 IRQ_TYPE_LEVEL_HIGH>;
++			resets = <&syscon GEMINI_RESET_USB0>;
++			clocks = <&syscon GEMINI_CLK_GATE_USB0>;
++			clock-names = "PCLK";
++			/*
++			 * This will claim pins for USB0 and USB1 at the same
++			 * time as they are using some common pins. If you for
++			 * some reason have a system using USB1 at 96000000 but
++			 * NOT using USB0 at 68000000 you wll have to add the
++			 * usb_default_pins to the USB controller at 96000000
++			 * in your .dts for the board.
++			 */
++			pinctrl-names = "default";
++			pinctrl-0 = <&usb_default_pins>;
++			syscon = <&syscon>;
++			status = "disabled";
++		};
++
++		usb@69000000 {
++			compatible = "cortina,gemini-usb", "faraday,fotg210";
++			reg = <0x69000000 0x1000>;
++			interrupts = <11 IRQ_TYPE_LEVEL_HIGH>;
++			resets = <&syscon GEMINI_RESET_USB1>;
++			clocks = <&syscon GEMINI_CLK_GATE_USB1>;
++			clock-names = "PCLK";
++			syscon = <&syscon>;
++			status = "disabled";
++		};
+ 	};
+ };
+-- 
+2.19.2
+