diff options
| author | Stefan Agner <stefan@agner.ch> | 2014-03-02 19:46:48 +0100 |
|---|---|---|
| committer | Tom Warren <twarren@nvidia.com> | 2014-04-17 08:41:06 -0700 |
| commit | b03f4b3742a728c13a89f3fbf8a9a2ec43061025 (patch) | |
| tree | 8645c06bdc5854cf925af0ffd977bdc9d2271a4b | |
| parent | e04bfdacb368da1f52135926e5c18dfa126e7cb1 (diff) | |
usb: tegra: fix USB2 powerdown for Tegra30 and later
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>
| -rw-r--r-- | drivers/usb/host/ehci-tegra.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 0b42aa5b38..20e9297d9c 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -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); |