[U-Boot] [PATCH v4 1/3] usb: tegra: fix USB2 powerdown for Tegra30 and later

[Stefan Agner]

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 at nvidia.com>
Signed-off-by: Stefan Agner <stefan at agner.ch>
---
 drivers/usb/host/ehci-tegra.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c
index 0b42aa5..20e9297 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);
-- 
1.8.5.4