From eb5369edca4f4307a6035dc6f6813698b0762906 Mon Sep 17 00:00:00 2001 From: Venu Byravarasu Date: Wed, 3 Apr 2013 16:11:12 +0530 Subject: [PATCH] usb: host: tegra: Reset Tegra USB controller before init To clear any configurations made by U-Boot on Tegra USB controller, reset it before init in probe. Signed-off-by: Venu Byravarasu Acked-by: Alan Stern reviewed-by: Stephen Warren Signed-off-by: Greg Kroah-Hartman --- drivers/usb/host/ehci-tegra.c | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index 568aecc7075..83d190a1caf 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -28,6 +28,7 @@ #include #include #include +#include #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"); -- 2.41.0