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- From a86bda9f8a7965f0cedd347a9c04800eb9f41ea3 Mon Sep 17 00:00:00 2001
- From: Vasudevan Murugesan <[email protected]>
- Date: Tue, 21 Jul 2015 10:22:38 +0530
- Subject: ipq806x: usb: Control USB master reset
- During removal of the glue layer(dwc3-of-simple),
- USB master reset is set to active and during insertion
- it is de-activated.
- Change-Id: I537dc810f6cb2a46664ee674840145066432b957
- Signed-off-by: Vasudevan Murugesan <[email protected]>
- (cherry picked from commit 4611e13580a216812f85f0801b95442d02eeb836)
- ---
- drivers/usb/dwc3/dwc3-of-simple.c | 22 ++++++++++++++++++++++
- 1 file changed, 12 insertions(+)
- (limited to 'drivers/usb/dwc3/dwc3-of-simple.c')
- diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
- index f9e92ef..49bf556 100644
- --- a/drivers/usb/dwc3/dwc3-of-simple.c
- +++ b/drivers/usb/dwc3/dwc3-of-simple.c
- @@ -26,6 +26,7 @@
- #include <linux/dma-mapping.h>
- #include <linux/clk.h>
- #include <linux/clk-provider.h>
- +#include <linux/reset.h>
- #include <linux/of.h>
- #include <linux/of_platform.h>
- #include <linux/pm_runtime.h>
- @@ -34,6 +35,8 @@ struct dwc3_of_simple {
- struct device *dev;
- struct clk **clks;
- int num_clocks;
- + struct reset_control *mstr_rst_30_0;
- + struct reset_control *mstr_rst_30_1;
- };
-
- static int dwc3_of_simple_probe(struct platform_device *pdev)
- @@ -89,6 +92,20 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
- simple->clks[i] = clk;
- }
-
- + simple->mstr_rst_30_0 = devm_reset_control_get(dev, "usb30_0_mstr_rst");
- +
- + if (!IS_ERR(simple->mstr_rst_30_0))
- + reset_control_deassert(simple->mstr_rst_30_0);
- + else
- + dev_dbg(simple->dev, "cannot get handle for USB PHY 0 master reset control\n");
- +
- + simple->mstr_rst_30_1 = devm_reset_control_get(dev, "usb30_1_mstr_rst");
- +
- + if (!IS_ERR(simple->mstr_rst_30_1))
- + reset_control_deassert(simple->mstr_rst_30_1);
- + else
- + dev_dbg(simple->dev, "cannot get handle for USB PHY 1 master reset control\n");
- +
- ret = of_platform_populate(np, NULL, NULL, dev);
- if (ret) {
- for (i = 0; i < simple->num_clocks; i++) {
- @@ -117,6 +134,12 @@ static int dwc3_of_simple_remove(struct platform_device *pdev)
- clk_put(simple->clks[i]);
- }
-
- + if (!IS_ERR(simple->mstr_rst_30_0))
- + reset_control_assert(simple->mstr_rst_30_0);
- +
- + if (!IS_ERR(simple->mstr_rst_30_1))
- + reset_control_assert(simple->mstr_rst_30_1);
- +
- of_platform_depopulate(dev);
-
- pm_runtime_put_sync(dev);
- --
- cgit v1.1
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