zynq: add support for the Zybo Z7 board

The board is manufactured by Digilent
Main features:
- Soc: XC7Z010 (Z7-10) or XC7Z020 (Z7-20)
- RAM: 1 GB DDR3L
- FLASH: 16 MB QSPI
- 1 Gbps Ethernet
- USB 2.0
- microSD slot
- Pcam camera connector
- HDMI Tx and Rx
- Audio codec: stereo out, stereo in, mic
- 5 (Z7-10) or 6 (Z7-20) Pmod ports
- 6 push-buttons, 4 switches, 5 LEDs
- 1 (Z7-10) or 2 (Z7-20) RGB LEDs

Signed-off-by: Luis Araneda <[email protected]>

target/linux/zynq/base-files/etc/board.d/02_network

@@ -7,6 +7,7 @@ board_config_update
 
 case "$(board_name)" in
 digilent,zynq-zybo | \
+digilent,zynq-zybo-z7 | \
 xlnx,zynq-zc702 | \
 xlnx,zynq-zed)
 	ucidef_set_interface_lan 'eth0'

target/linux/zynq/image/Makefile

@@ -36,6 +36,13 @@ define Device/digilent_zynq-zybo
 endef
 TARGET_DEVICES += digilent_zynq-zybo
 
+define Device/digilent_zynq-zybo-z7
+	$(call Device/FitImageGzip)
+	DEVICE_TITLE := Digilent Zybo Z7 board
+	DEVICE_DTS := zynq-zybo-z7
+endef
+TARGET_DEVICES += digilent_zynq-zybo-z7
+
 define Device/xlnx_zynq-zc702
 	$(call Device/FitImageGzip)
 	DEVICE_TITLE := ZC702 Development Board

target/linux/zynq/patches-4.14/020-v4.17-add-digilent-zybo-z7-board.patch

@@ -0,0 +1,94 @@
+From ba5c7a032c2ae66d5467820daab898e5f9048405 Mon Sep 17 00:00:00 2001
+From: Nobuhiro Iwamatsu <[email protected]>
+Date: Wed, 28 Feb 2018 11:25:52 +0900
+Subject: [PATCH] arm: dts: zynq: Add Digilent Zybo Z7 board
+
+This add a DTS for the Digilent Zybo Z7 board.
+This board is the successor board of Zybo, these are almost the same except
+for ps-clk-frequency specifications.
+
+Signed-off-by: Nobuhiro Iwamatsu <[email protected]>
+Reviewed-by: Rob Herring <[email protected]>
+Signed-off-by: Michal Simek <[email protected]>
+---
+Modifications:
+- Removed changes to file Documentation/devicetree/bindings/arm/xilinx.txt
+---
+ arch/arm/boot/dts/Makefile                    |  3 +-
+ arch/arm/boot/dts/zynq-zybo-z7.dts            | 58 +++++++++++++++++++
+ 2 files changed, 60 insertions(+), 1 deletion(-)
+ create mode 100644 arch/arm/boot/dts/zynq-zybo-z7.dts
+
+--- a/arch/arm/boot/dts/Makefile
++++ b/arch/arm/boot/dts/Makefile
+@@ -1006,7 +1006,8 @@ dtb-$(CONFIG_ARCH_ZYNQ) += \
+ 	zynq-zc702.dtb \
+ 	zynq-zc706.dtb \
+ 	zynq-zed.dtb \
+-	zynq-zybo.dtb
++	zynq-zybo.dtb \
++	zynq-zybo-z7.dtb
+ dtb-$(CONFIG_MACH_ARMADA_370) += \
+ 	armada-370-db.dtb \
+ 	armada-370-dlink-dns327l.dtb \
+--- /dev/null
++++ b/arch/arm/boot/dts/zynq-zybo-z7.dts
+@@ -0,0 +1,58 @@
++// SPDX-License-Identifier: GPL-2.0+
++/dts-v1/;
++#include "zynq-7000.dtsi"
++
++/ {
++	model = "Zynq ZYBO Z7 Development Board";
++	compatible = "digilent,zynq-zybo-z7", "xlnx,zynq-7000";
++
++	aliases {
++		ethernet0 = &gem0;
++		serial0 = &uart1;
++	};
++
++	memory@0 {
++		device_type = "memory";
++		reg = <0x0 0x20000000>;
++	};
++
++	chosen {
++		bootargs = "";
++		stdout-path = "serial0:115200n8";
++	};
++
++	usb_phy0: phy0 {
++		#phy-cells = <0>;
++		compatible = "usb-nop-xceiv";
++		reset-gpios = <&gpio0 46 1>;
++	};
++};
++
++&clkc {
++	ps-clk-frequency = <33333333>;
++};
++
++&gem0 {
++	status = "okay";
++	phy-mode = "rgmii-id";
++	phy-handle = <&ethernet_phy>;
++
++	ethernet_phy: ethernet-phy@0 {
++		reg = <0>;
++		device_type = "ethernet-phy";
++	};
++};
++
++&sdhci0 {
++	status = "okay";
++};
++
++&uart1 {
++	status = "okay";
++};
++
++&usb0 {
++	status = "okay";
++	dr_mode = "host";
++	usb-phy = <&usb_phy0>;
++};

target/linux/zynq/patches-4.14/025-v4.19-update-digilent-zybo-z7-dts.patch

@@ -0,0 +1,52 @@
+From 7d90ca6f19199a54d3f8417c5f36c50dfa0accc8 Mon Sep 17 00:00:00 2001
+From: Luis Araneda <[email protected]>
+Date: Thu, 12 Jul 2018 01:50:46 -0400
+Subject: [PATCH] v4.19: Backport dts updates to the Digilent Zybo Z7 board
+
+- 7d90ca6: Fix memory size (512 MiB -> 1 GiB)
+- edd62b9: Use GPIO constants
+- a2b7baf: Add gpio-leds node
+
+Signed-off-by: Luis Araneda <[email protected]>
+---
+
+--- a/arch/arm/boot/dts/zynq-zybo-z7.dts
++++ b/arch/arm/boot/dts/zynq-zybo-z7.dts
+@@ -1,6 +1,7 @@
+ // SPDX-License-Identifier: GPL-2.0+
+ /dts-v1/;
+ #include "zynq-7000.dtsi"
++#include <dt-bindings/gpio/gpio.h>
+ 
+ / {
+ 	model = "Zynq ZYBO Z7 Development Board";
+@@ -13,7 +14,7 @@
+ 
+ 	memory@0 {
+ 		device_type = "memory";
+-		reg = <0x0 0x20000000>;
++		reg = <0x0 0x40000000>;
+ 	};
+ 
+ 	chosen {
+@@ -21,10 +22,19 @@
+ 		stdout-path = "serial0:115200n8";
+ 	};
+ 
++	gpio-leds {
++		compatible = "gpio-leds";
++
++		ld4 {
++			label = "zynq-zybo-z7:green:ld4";
++			gpios = <&gpio0 7 GPIO_ACTIVE_HIGH>;
++		};
++	};
++
+ 	usb_phy0: phy0 {
+ 		#phy-cells = <0>;
+ 		compatible = "usb-nop-xceiv";
+-		reset-gpios = <&gpio0 46 1>;
++		reset-gpios = <&gpio0 46 GPIO_ACTIVE_LOW>;
+ 	};
+ };
+