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usb: tegra: fix USB2 powerdown for Tegra30 and later

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Clear the forced powerdown bit in the UTMIP_PLL_CFG2_0 register
which brings USB2 in UTMI mode to work. This was clearly missing
since the forced powerdown bit is set in reset by default for all
USB ports.

Acked-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Stefan Agner <stefan@agner.ch>
Tested-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Tom Warren <twarren@nvidia.com>
This commit is contained in:
Stefan Agner 2014-03-02 19:46:48 +01:00 committed by Tom Warren
parent e04bfdacb3
commit b03f4b3742
1 changed files with 3 additions and 0 deletions
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3
drivers/usb/host/ehci-tegra.c
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@ -461,6 +461,9 @@ static int init_utmi_usb_controller(struct fdt_usb *config)
if (config->periph_id == PERIPH_ID_USBD)
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
UTMIP_FORCE_PD_SAMP_A_POWERDOWN);
if (config->periph_id == PERIPH_ID_USB2)
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
UTMIP_FORCE_PD_SAMP_B_POWERDOWN);
if (config->periph_id == PERIPH_ID_USB3)
clrbits_le32(&clkrst->crc_utmip_pll_cfg2,
UTMIP_FORCE_PD_SAMP_C_POWERDOWN);