diff options
Diffstat (limited to 'target/linux/ipq806x/patches-4.9/0074-ipq806x-usb-Control-USB-master-reset.patch')
| -rw-r--r-- | target/linux/ipq806x/patches-4.9/0074-ipq806x-usb-Control-USB-master-reset.patch | 64 |
1 files changed, 64 insertions, 0 deletions
diff --git a/target/linux/ipq806x/patches-4.9/0074-ipq806x-usb-Control-USB-master-reset.patch b/target/linux/ipq806x/patches-4.9/0074-ipq806x-usb-Control-USB-master-reset.patch new file mode 100644 index 0000000000..feb5a2f4d3 --- /dev/null +++ b/target/linux/ipq806x/patches-4.9/0074-ipq806x-usb-Control-USB-master-reset.patch @@ -0,0 +1,64 @@ +From a86bda9f8a7965f0cedd347a9c04800eb9f41ea3 Mon Sep 17 00:00:00 2001 +From: Vasudevan Murugesan <vmuruges@codeaurora.org> +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 <vmuruges@codeaurora.org> +(cherry picked from commit 4611e13580a216812f85f0801b95442d02eeb836) +--- + drivers/usb/dwc3/dwc3-of-simple.c | 12 ++++++++++++ + 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 +35,7 @@ struct dwc3_of_simple { + struct device *dev; + struct clk **clks; + int num_clocks; ++ struct reset_control *mstr_rst; + }; + + static int dwc3_of_simple_probe(struct platform_device *pdev) +@@ -89,6 +91,13 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) + simple->clks[i] = clk; + } + ++ simple->mstr_rst = devm_reset_control_get(dev, "usb30_mstr_rst"); ++ ++ if (!IS_ERR(simple->mstr_rst)) ++ reset_control_deassert(simple->mstr_rst); ++ else ++ dev_dbg(simple->dev, "cannot get handle for master reset control\n"); ++ + ret = of_platform_populate(np, NULL, NULL, dev); + if (ret) { + for (i = 0; i < simple->num_clocks; i++) { +@@ -117,6 +126,9 @@ static int dwc3_of_simple_remove(struct platform_device *pdev) + clk_put(simple->clks[i]); + } + ++ if (!IS_ERR(simple->mstr_rst)) ++ reset_control_assert(simple->mstr_rst); ++ + of_platform_depopulate(dev); + + pm_runtime_put_sync(dev); +-- +cgit v1.1 |