To clear any configurations made by U-Boot on Tegra USB controller, reset it before init in probe.
Signed-off-by: Venu Byravarasu <vbyravar...@nvidia.com> Acked-by: Alan Stern <st...@rowland.harvard.edu> Acked-by: Greg Kroah-Hartman <gre...@linuxfoundation.org> reviewed-by: Stephen Warren <swar...@nvidia.com> --- This patch was already reviewed at: http://marc.info/?l=linux-usb&m=136203353205291&w=2 drivers/usb/host/ehci-tegra.c | 5 +++++ 1 files changed, 5 insertions(+), 0 deletions(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 1d2488c..60ed5d1 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -28,6 +28,7 @@ #include <linux/pm_runtime.h> #include <linux/usb/ehci_def.h> #include <linux/usb/tegra_usb_phy.h> +#include <linux/clk/tegra.h> #define TEGRA_USB_BASE 0xC5000000 #define TEGRA_USB2_BASE 0xC5004000 @@ -691,6 +692,10 @@ static int tegra_ehci_probe(struct platform_device *pdev) if (err) goto fail_clk; + tegra_periph_reset_assert(tegra->clk); + udelay(1); + tegra_periph_reset_deassert(tegra->clk); + tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node, "nvidia,needs-double-reset"); -- 1.7.0.4 -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majord...@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
