linux-omap-pm: make u-boot flashable from within linux, first attempt at making ehci work

2 files changed, 45 insertions, 120 deletions

diff --git a/recipes/linux/linux-omap-pm/beagle-writable-uboot.diff b/recipes/linux/linux-omap-pm/beagle-writable-uboot.diff
new file mode 100644
index 0000000000..7c5a36df9e
--- /dev/null
+++ b/recipes/linux/linux-omap-pm/beagle-writable-uboot.diff
@@ -0,0 +1,10 @@
+--- a/arch/arm/mach-omap2/board-omap3beagle.c	2009-07-08 16:30:01.000000000 -0700
++++ b/arch/arm/mach-omap2/board-omap3beagle.c	2009-07-13 13:56:37.000000000 -0700
+@@ -68,7 +68,6 @@ static struct mtd_partition omap3beagle_
+ 		.name		= "U-Boot",
+ 		.offset		= MTDPART_OFS_APPEND,	/* Offset = 0x80000 */
+ 		.size		= 15 * NAND_BLOCK_SIZE,
+-		.mask_flags	= MTD_WRITEABLE,	/* force read-only */
+ 	},
+ 	{
+ 		.name		= "U-Boot Env",
diff --git a/recipes/linux/linux-omap-pm/beagleboard/ehci.patch b/recipes/linux/linux-omap-pm/beagleboard/ehci.patch
index 5a8c84471b..c55ff601c4 100644
--- a/recipes/linux/linux-omap-pm/beagleboard/ehci.patch
+++ b/recipes/linux/linux-omap-pm/beagleboard/ehci.patch
@@ -1,131 +1,46 @@
-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
+From f8f10f496bce396416d7156da876222c6ce8c341 Mon Sep 17 00:00:00 2001
+From: Steven Kipisz <skipisz@beagleboard.org>
+Date: Wed, 9 Jan 2009 12:01:11 -0600
+Subject: [PATCH-USB] Omap3 beagleboard: add support for EHCI in revision C1 boards
+
+Signed-off-by: Jason Kridner <jkridner@beagleboard.org>
+---
+ arch/arm/mach-omap2/board-omap3beagle.c |   10 +---------
+ arch/arm/mach-omap2/usb-ehci.c          |    4 +---
+ drivers/usb/host/ehci-omap.c            |   26 ++++++++++++++++++++++++++
+ 3 files changed, 28 insertions(+), 12 deletions(-)
+
+diff --git a/arch/arm/mach-omap2/board-omap3beagle.c b/arch/arm/mach-omap2/board-omap3beagle.c
+index fe97bab..de81153 100644
+--- a/arch/arm/mach-omap2/board-omap3beagle.c
++++ b/arch/arm/mach-omap2/board-omap3beagle.c
+@@ -140,15 +140,7 @@ static int beagle_twl_gpio_setup(struct device *dev,
  	 * 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;
+-	gpio_request(gpio + 1, "EHCI_nOC");
+-	gpio_direction_input(gpio + 1);
 -
-+#endif
+-	/* TWL4030_GPIO_MAX + 0 == ledA, EHCI nEN_USB_PWR (out, active low) */
+-	gpio_request(gpio + TWL4030_GPIO_MAX, "nEN_USB_PWR");
+-	gpio_direction_output(gpio + TWL4030_GPIO_MAX, 1);
+-
+-	/* TWL4030_GPIO_MAX + 1 == ledB, PMU_STAT (out, active low LED) */
+-	gpio_leds[2].gpio = gpio + TWL4030_GPIO_MAX + 1;
++        /* TODO: This needs to be modified to not rely on u-boot */
+ 
  	return 0;
  }
+--- /tmp/usb-ehci.c	2009-07-30 13:14:34.000000000 +0200
++++ git/arch/arm/mach-omap2/usb-ehci.c	2009-07-30 13:16:03.000000000 +0200
+@@ -170,9 +170,7 @@
  
-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)
+ 	platform_device_add_data(&ehci_device, &pdata, sizeof(pdata));
  
- 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
+-	/* Setup Pin IO MUX for EHCI */
+-	if (cpu_is_omap34xx())
+-		setup_ehci_io_mux();
++	/* TODO: Setup Pin IO MUX for EHCI - moved this temporarily to U-boot */
  
  	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
-