From b03f4b3742a728c13a89f3fbf8a9a2ec43061025 Mon Sep 17 00:00:00 2001 From: Stefan Agner Date: Sun, 2 Mar 2014 19:46:48 +0100 Subject: [PATCH] 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 Signed-off-by: Stefan Agner Tested-by: Stephen Warren Signed-off-by: Tom Warren --- 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 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); -- 2.30.2