linux-omap_2.6.29: added ehci patch

1 files changed, 131 insertions, 0 deletions

diff --git a/recipes/linux/linux-omap-2.6.29/ehci.patch b/recipes/linux/linux-omap-2.6.29/ehci.patch
new file mode 100644
index 0000000000..5a8c84471b
--- /dev/null
+++ b/recipes/linux/linux-omap-2.6.29/ehci.patch
@@ -0,0 +1,131 @@
+Index: git/arch/arm/mach-omap2/board-omap3beagle.c
+===================================================================
+--- git.orig/arch/arm/mach-omap2/board-omap3beagle.c
++++ git/arch/arm/mach-omap2/board-omap3beagle.c
+@@ -154,6 +154,7 @@ static int beagle_twl_gpio_setup(struct
+ 	 * power switch and overcurrent detect
+ 	 */
+ 
++#if 0 /* TODO: This needs to be modified to not rely on u-boot */
+ 	gpio_request(gpio + 1, "EHCI_nOC");
+ 	gpio_direction_input(gpio + 1);
+ 
+@@ -163,7 +164,7 @@ static int beagle_twl_gpio_setup(struct
+ 
+ 	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+ 	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
+-
++#endif
+ 	return 0;
+ }
+ 
+Index: git/arch/arm/mach-omap2/usb-ehci.c
+===================================================================
+--- git.orig/arch/arm/mach-omap2/usb-ehci.c
++++ git/arch/arm/mach-omap2/usb-ehci.c
+@@ -147,9 +147,11 @@ static void setup_ehci_io_mux(void)
+ 
+ void __init usb_ehci_init(void)
+ {
++#if 0 /* TODO: Setup Pin IO MUX for EHCI - moved this temporarily to U-boot */
+ 	/* Setup Pin IO MUX for EHCI */
+ 	if (cpu_is_omap34xx())
+ 		setup_ehci_io_mux();
++#endif
+ 
+ 	if (platform_device_register(&ehci_device) < 0) {
+ 		printk(KERN_ERR "Unable to register HS-USB (EHCI) device\n");
+Index: git/drivers/usb/host/ehci-omap.c
+===================================================================
+--- git.orig/drivers/usb/host/ehci-omap.c
++++ git/drivers/usb/host/ehci-omap.c
+@@ -48,16 +48,25 @@
+  *		to get the PHY state machine in working state
+  */
+ #define EXTERNAL_PHY_RESET
++#ifdef CONFIG_MACH_OMAP3_BEAGLE
++#define        EXT_PHY_RESET_GPIO_PORT2        (147)
++#else
+ #define	EXT_PHY_RESET_GPIO_PORT1	(57)
+ #define	EXT_PHY_RESET_GPIO_PORT2	(61)
++#endif
+ #define	EXT_PHY_RESET_DELAY		(10)
+ 
++#define PHY_STP_PULLUP_ENABLE           (0x10)
++#define PHY_STP_PULLUP_DISABLE          (0x90)
++
+ /* ISSUE2:
+  * USBHOST supports External charge pump PHYs only
+  * Use the VBUS from Port1 to power VBUS of Port2 externally
+  * So use Port2 as the working ULPI port
+  */
++#ifndef CONFIG_MACH_OMAP3_BEAGLE
+ #define VBUS_INTERNAL_CHARGEPUMP_HACK
++#endif
+ 
+ #endif /* CONFIG_OMAP_EHCI_PHY_MODE */
+ 
+@@ -225,14 +234,43 @@ static int omap_start_ehc(struct platfor
+ 
+ #ifdef EXTERNAL_PHY_RESET
+ 	/* Refer: ISSUE1 */
++#ifndef CONFIG_MACH_OMAP3_BEAGLE
+ 	gpio_request(EXT_PHY_RESET_GPIO_PORT1, "USB1 PHY reset");
+ 	gpio_direction_output(EXT_PHY_RESET_GPIO_PORT1, 0);
++#endif
+ 	gpio_request(EXT_PHY_RESET_GPIO_PORT2, "USB2 PHY reset");
+ 	gpio_direction_output(EXT_PHY_RESET_GPIO_PORT2, 0);
++	gpio_set_value(EXT_PHY_RESET_GPIO_PORT2, 0);
+ 	/* Hold the PHY in RESET for enough time till DIR is high */
+ 	udelay(EXT_PHY_RESET_DELAY);
+ #endif
+ 
++        /*
++         * The PHY register 0x7 - Interface Control register is
++         * configured to disable the integrated STP pull-up resistor
++         * used for interface protection.
++        *
++        * May not need to be here.
++         */
++        omap_writel((0x7 << EHCI_INSNREG05_ULPI_REGADD_SHIFT) |/* interface reg */
++                (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |/*   Write */
++                (1 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |/* Port1 */
++                (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |/* Start */
++                (PHY_STP_PULLUP_DISABLE),
++                EHCI_INSNREG05_ULPI);
++
++        while (!(omap_readl(EHCI_INSNREG05_ULPI) & (1<<EHCI_INSNREG05_ULPI_CONTROL_SHIFT)));
++
++        /* Force PHY to HS */
++        omap_writel((0x4 << EHCI_INSNREG05_ULPI_REGADD_SHIFT) |/* function ctrl */
++                (2 << EHCI_INSNREG05_ULPI_OPSEL_SHIFT) |/*   Write */
++                (1 << EHCI_INSNREG05_ULPI_PORTSEL_SHIFT) |/* Port1 */
++                (1 << EHCI_INSNREG05_ULPI_CONTROL_SHIFT) |/* Start */
++                (0x40),
++                EHCI_INSNREG05_ULPI);
++
++        while (!(omap_readl(EHCI_INSNREG05_ULPI) & (1<<EHCI_INSNREG05_ULPI_CONTROL_SHIFT)));
++
+ 	/* Configure TLL for 60Mhz clk for ULPI */
+ 	ehci_clocks->usbtll_fck_clk = clk_get(&dev->dev, USBHOST_TLL_FCLK);
+ 	if (IS_ERR(ehci_clocks->usbtll_fck_clk))
+@@ -307,7 +345,9 @@ static int omap_start_ehc(struct platfor
+ 	 * Hold the PHY in RESET for enough time till PHY is settled and ready
+ 	 */
+ 	udelay(EXT_PHY_RESET_DELAY);
++#ifndef CONFIG_MACH_OMAP3_BEAGLE
+ 	gpio_set_value(EXT_PHY_RESET_GPIO_PORT1, 1);
++#endif
+ 	gpio_set_value(EXT_PHY_RESET_GPIO_PORT2, 1);
+ #endif
+ 
+@@ -393,7 +433,9 @@ static void omap_stop_ehc(struct platfor
+ 
+ 
+ #ifdef EXTERNAL_PHY_RESET
++#ifndef CONFIG_MACH_OMAP3_BEAGLE
+ 	gpio_free(EXT_PHY_RESET_GPIO_PORT1);
++#endif
+ 	gpio_free(EXT_PHY_RESET_GPIO_PORT2);
+ #endif
+