From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1760727Ab3DCKqE (ORCPT ); Wed, 3 Apr 2013 06:46:04 -0400 Received: from hqemgate03.nvidia.com ([216.228.121.140]:11150 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1759835Ab3DCKqC (ORCPT ); Wed, 3 Apr 2013 06:46:02 -0400 X-PGP-Universal: processed; by hqnvupgp07.nvidia.com on Wed, 03 Apr 2013 03:45:10 -0700 From: Venu Byravarasu To: , , CC: , , , Venu Byravarasu Subject: [PATCH resend] usb: host: tegra: Reset Tegra USB controller before init Date: Wed, 3 Apr 2013 16:11:12 +0530 Message-ID: <1364985672-3725-1-git-send-email-vbyravarasu@nvidia.com> X-Mailer: git-send-email 1.7.0.4 X-NVConfidentiality: public MIME-Version: 1.0 Content-Type: text/plain Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org 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 Acked-by: Greg Kroah-Hartman reviewed-by: Stephen Warren --- 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 #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"); -- 1.7.0.4