From: Stephen Warren <swarren@nvidia.com>
Date: Thu, 12 Apr 2012 21:03:52 +0000 (-0600)
Subject: ARM: tegra: don't hard-code USB ULPI PHY reset_gpio
X-Git-Tag: next-20120417~9^2~3^2~2
X-Git-Url: https://git.karo-electronics.de/?a=commitdiff_plain;h=acd8b251ddc2ae101db737c46aea96266a61c36e;p=karo-tx-linux.git

ARM: tegra: don't hard-code USB ULPI PHY reset_gpio

Not all boards use GPIO_PV0 as the ULPI PHY reset signal. Instead of
hard-coding this GPIO into devices.c, make the board files set it
explicitly. This will allow the PHY code to differentiate between set and
unset values, and hence know when to read the value from device tree.

Signed-off-by: Stephen Warren <swarren@nvidia.com>
---

diff --git a/arch/arm/mach-tegra/board-paz00.c b/arch/arm/mach-tegra/board-paz00.c
index aebfa4003813..e31317deec21 100644
--- a/arch/arm/mach-tegra/board-paz00.c
+++ b/arch/arm/mach-tegra/board-paz00.c
@@ -159,6 +159,8 @@ static void paz00_i2c_init(void)
 
 static void paz00_usb_init(void)
 {
+	tegra_ehci2_ulpi_phy_config.reset_gpio = TEGRA_ULPI_RST;
+
 	platform_device_register(&tegra_ehci2_device);
 	platform_device_register(&tegra_ehci3_device);
 }
diff --git a/arch/arm/mach-tegra/board-trimslice.c b/arch/arm/mach-tegra/board-trimslice.c
index f6f5b6a11325..24f1678098dd 100644
--- a/arch/arm/mach-tegra/board-trimslice.c
+++ b/arch/arm/mach-tegra/board-trimslice.c
@@ -117,6 +117,8 @@ static void trimslice_usb_init(void)
 	pdata = tegra_ehci1_device.dev.platform_data;
 	pdata->vbus_gpio = TRIMSLICE_GPIO_USB1_MODE;
 
+	tegra_ehci2_ulpi_phy_config.reset_gpio = TEGRA_GPIO_PV0;
+
 	platform_device_register(&tegra_ehci3_device);
 	platform_device_register(&tegra_ehci2_device);
 	platform_device_register(&tegra_ehci1_device);
diff --git a/arch/arm/mach-tegra/devices.c b/arch/arm/mach-tegra/devices.c
index bd3035e0cea1..9fcb9a522276 100644
--- a/arch/arm/mach-tegra/devices.c
+++ b/arch/arm/mach-tegra/devices.c
@@ -439,9 +439,8 @@ static struct resource tegra_usb3_resources[] = {
 	},
 };
 
-static struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
-	/* All existing boards use GPIO PV0 for phy reset */
-	.reset_gpio = TEGRA_GPIO_PV0,
+struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config = {
+	.reset_gpio = -1,
 	.clk = "cdev2",
 };
 
diff --git a/arch/arm/mach-tegra/devices.h b/arch/arm/mach-tegra/devices.h
index ec455679b219..4290ea0063ac 100644
--- a/arch/arm/mach-tegra/devices.h
+++ b/arch/arm/mach-tegra/devices.h
@@ -22,6 +22,10 @@
 #include <linux/platform_device.h>
 #include <linux/platform_data/tegra_usb.h>
 
+#include <mach/usb_phy.h>
+
+extern struct tegra_ulpi_config tegra_ehci2_ulpi_phy_config;
+
 extern struct tegra_ehci_platform_data tegra_ehci1_pdata;
 extern struct tegra_ehci_platform_data tegra_ehci2_pdata;
 extern struct tegra_ehci_platform_data tegra_ehci3_pdata;