diff options
| author | Wolfgang Denk <wd@denx.de> | 2012-07-10 08:54:41 +0200 |
|---|---|---|
| committer | Wolfgang Denk <wd@denx.de> | 2012-07-10 08:54:41 +0200 |
| commit | 895f3e0542015b347298c8b501e63d5f32002c04 (patch) | |
| tree | 4df04c7f3480d75bd02925d09aa1cbb5049a3fc9 /drivers/usb/host | |
| parent | 30704dae469c092766c346b3bef7ac001fa45511 (diff) | |
| parent | 63905f1616fc2f827e986d8e82a5a2b69f4a0e6a (diff) | |
Merge branch 'master' of git://git.denx.de/u-boot-arm
* 'master' of git://git.denx.de/u-boot-arm:
tegra: define fdt_load/fdt_high variables
tegra: enable bootz command
tegra: usb: Fix device enumeration problem of USB1
tegra: trimslice: set up serial flash pinmux
tegra: add pin_mux_spi() board initialization function
tegra: add GMC/GMD funcmux entry for SFLASH
tegra: bootcmd: start USB only when needed
tegra: bootcmd enhancements
tegra: add enterrcm command
tegra: enable CONFIG_ENV_VARS_UBOOT_CONFIG
Add env vars describing U-Boot target board
tegra: usb: fix wrong error check
tegra: add ULPI on USB2 funcmux entry
tegra: fix leftover CONFIG_TEGRA2_MMC & _SPI build switches
tegra: Add Tamonten Evaluation Carrier support
tegra: Use SD write-protect GPIO on Tamonten
tegra: Implement gpio_early_init() on Tamonten
tegra: Allow boards to perform early GPIO setup
tegra: plutux: Add device tree support
tegra: medcom: Add device tree support
tegra: Rework Tamonten support
beagle: add eeprom expansion board info for bct brettl4
Signed-off-by: Wolfgang Denk <wd@denx.de>
Diffstat (limited to 'drivers/usb/host')
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 18 |
1 files changed, 17 insertions, 1 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index a7e105b992..4646b29508 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -1,5 +1,5 @@ /* - * Copyright (c) 2009 NVIDIA Corporation + * Copyright (c) 2009-2012 NVIDIA Corporation * * See file CREDITS for list of people who contributed to this * project. @@ -29,6 +29,22 @@ #include <asm/errno.h> #include <asm/arch/usb.h> +/* + * A known hardware issue where Connect Status Change bit of PORTSC register + * of USB1 controller will be set after Port Reset. + * We have to clear it in order for later device enumeration to proceed. + * This ehci_powerup_fixup overrides the weak function ehci_powerup_fixup + * in "ehci-hcd.c". + */ +void ehci_powerup_fixup(uint32_t *status_reg, uint32_t *reg) +{ + mdelay(50); + if (((u32) status_reg & TEGRA_USB_ADDR_MASK) != TEGRA_USB1_BASE) + return; + /* For EHCI_PS_CSC to be cleared in ehci_hcd.c */ + if (ehci_readl(status_reg) & EHCI_PS_CSC) + *reg |= EHCI_PS_CSC; +} /* * Create the appropriate control structures to manage |