diff options
author | Ilya Yanok <yanok@emcraft.com> | 2012-02-06 03:55:33 (GMT) |
---|---|---|
committer | Albert ARIBAUD <albert.u.boot@aribaud.net> | 2012-02-12 09:11:30 (GMT) |
commit | 29321c0518d99494ab2a250e5b4f75b3add83b11 (patch) | |
tree | f74e2443560cf2e809a79bf1ff1e2f6ec3514d72 /board/ti/beagle/beagle.c | |
parent | 928c4bdf9b069be218436d25b96721395c4d671f (diff) | |
download | u-boot-fsl-qoriq-29321c0518d99494ab2a250e5b4f75b3add83b11.tar.xz |
ehci-omap: driver for EHCI host on OMAP3
Taken from Beagle code. Tested on mcx board (AM3517-based).
Signed-off-by: Ilya Yanok <yanok@emcraft.com>
Tested-by: Stefano Babic <sbabic@denx.de>
Diffstat (limited to 'board/ti/beagle/beagle.c')
-rw-r--r-- | board/ti/beagle/beagle.c | 101 |
1 files changed, 0 insertions, 101 deletions
diff --git a/board/ti/beagle/beagle.c b/board/ti/beagle/beagle.c index 2cca6da..624ff70 100644 --- a/board/ti/beagle/beagle.c +++ b/board/ti/beagle/beagle.c @@ -42,15 +42,6 @@ #include <asm/arch/sys_proto.h> #include <asm/gpio.h> #include <asm/mach-types.h> -#ifdef CONFIG_USB_EHCI -#include <usb.h> -#include <asm/arch/clocks.h> -#include <asm/arch/clocks_omap3.h> -#include <asm/arch/ehci_omap3.h> -/* from drivers/usb/host/ehci-core.h */ -extern struct ehci_hccr *hccr; -extern volatile struct ehci_hcor *hcor; -#endif #include "beagle.h" #include <command.h> @@ -452,104 +443,12 @@ int board_mmc_init(bd_t *bis) #endif #ifdef CONFIG_USB_EHCI - -#define GPIO_PHY_RESET 147 - -/* Reset is needed otherwise the kernel-driver will throw an error. */ -int ehci_hcd_stop(void) -{ - pr_debug("Resetting OMAP3 EHCI\n"); - gpio_set_value(GPIO_PHY_RESET, 0); - writel(OMAP_UHH_SYSCONFIG_SOFTRESET, OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); - /* disable USB clocks */ - struct prcm *prcm_base = (struct prcm *)PRCM_BASE; - sr32(&prcm_base->iclken_usbhost, 0, 1, 0); - sr32(&prcm_base->fclken_usbhost, 0, 2, 0); - sr32(&prcm_base->iclken3_core, 2, 1, 0); - sr32(&prcm_base->fclken3_core, 2, 1, 0); - return 0; -} - /* Call usb_stop() before starting the kernel */ void show_boot_progress(int val) { if(val == 15) usb_stop(); } - -/* - * Initialize the OMAP3 EHCI controller and PHY on the BeagleBoard. - * Based on "drivers/usb/host/ehci-omap.c" from Linux 2.6.37. - * See there for additional Copyrights. - */ -int ehci_hcd_init(void) -{ - pr_debug("Initializing OMAP3 ECHI\n"); - - /* Put the PHY in RESET */ - gpio_request(GPIO_PHY_RESET, ""); - gpio_direction_output(GPIO_PHY_RESET, 0); - gpio_set_value(GPIO_PHY_RESET, 0); - - /* Hold the PHY in RESET for enough time till DIR is high */ - /* Refer: ISSUE1 */ - udelay(10); - - struct prcm *prcm_base = (struct prcm *)PRCM_BASE; - /* Enable USBHOST_L3_ICLK (USBHOST_MICLK) */ - sr32(&prcm_base->iclken_usbhost, 0, 1, 1); - /* - * Enable USBHOST_48M_FCLK (USBHOST_FCLK1) - * and USBHOST_120M_FCLK (USBHOST_FCLK2) - */ - sr32(&prcm_base->fclken_usbhost, 0, 2, 3); - /* Enable USBTTL_ICLK */ - sr32(&prcm_base->iclken3_core, 2, 1, 1); - /* Enable USBTTL_FCLK */ - sr32(&prcm_base->fclken3_core, 2, 1, 1); - pr_debug("USB clocks enabled\n"); - - /* perform TLL soft reset, and wait until reset is complete */ - writel(OMAP_USBTLL_SYSCONFIG_SOFTRESET, - OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); - /* Wait for TLL reset to complete */ - while (!(readl(OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSSTATUS) - & OMAP_USBTLL_SYSSTATUS_RESETDONE)); - pr_debug("TLL reset done\n"); - - writel(OMAP_USBTLL_SYSCONFIG_ENAWAKEUP | - OMAP_USBTLL_SYSCONFIG_SIDLEMODE | - OMAP_USBTLL_SYSCONFIG_CACTIVITY, - OMAP3_USBTLL_BASE + OMAP_USBTLL_SYSCONFIG); - - /* Put UHH in NoIdle/NoStandby mode */ - writel(OMAP_UHH_SYSCONFIG_ENAWAKEUP - | OMAP_UHH_SYSCONFIG_SIDLEMODE - | OMAP_UHH_SYSCONFIG_CACTIVITY - | OMAP_UHH_SYSCONFIG_MIDLEMODE, - OMAP3_UHH_BASE + OMAP_UHH_SYSCONFIG); - - /* setup burst configurations */ - writel(OMAP_UHH_HOSTCONFIG_INCR4_BURST_EN - | OMAP_UHH_HOSTCONFIG_INCR8_BURST_EN - | OMAP_UHH_HOSTCONFIG_INCR16_BURST_EN, - OMAP3_UHH_BASE + OMAP_UHH_HOSTCONFIG); - - /* - * Refer ISSUE1: - * Hold the PHY in RESET for enough time till - * PHY is settled and ready - */ - udelay(10); - gpio_set_value(GPIO_PHY_RESET, 1); - - hccr = (struct ehci_hccr *)(OMAP3_EHCI_BASE); - hcor = (struct ehci_hcor *)(OMAP3_EHCI_BASE + 0x10); - - pr_debug("OMAP3 EHCI init done\n"); - return 0; -} - #endif /* CONFIG_USB_EHCI */ #ifndef CONFIG_SPL_BUILD |