From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1753292Ab3ACHaT (ORCPT ); Thu, 3 Jan 2013 02:30:19 -0500 Received: from hqemgate03.nvidia.com ([216.228.121.140]:8502 "EHLO hqemgate03.nvidia.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1753213Ab3ACHaP (ORCPT ); Thu, 3 Jan 2013 02:30:15 -0500 X-PGP-Universal: processed; by hqnvupgp05.nvidia.com on Wed, 02 Jan 2013 23:30:15 -0800 From: Venu Byravarasu To: , CC: , , , Venu Byravarasu Subject: [PATCH RESEND 2/2] usb: host: tegra: Resetting PORT0 based on information received via DT. Date: Thu, 3 Jan 2013 12:59:39 +0530 Message-ID: <1357198179-10031-3-git-send-email-vbyravarasu@nvidia.com> X-Mailer: git-send-email 1.7.0.4 In-Reply-To: <1357198179-10031-1-git-send-email-vbyravarasu@nvidia.com> References: <1357198179-10031-1-git-send-email-vbyravarasu@nvidia.com> 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 Tegra USB host driver is using port instance number, to handle some of the hardware issues on SOC e.g. reset PORT0 twice etc. As instance number based handling looks ugly, making use of information passed through DT for achieving this. Signed-off-by: Venu Byravarasu Acked-by: Alan Stern --- drivers/usb/host/ehci-tegra.c | 6 +++++- 1 files changed, 5 insertions(+), 1 deletions(-) diff --git a/drivers/usb/host/ehci-tegra.c b/drivers/usb/host/ehci-tegra.c index acf1755..55a9cde 100644 --- a/drivers/usb/host/ehci-tegra.c +++ b/drivers/usb/host/ehci-tegra.c @@ -43,6 +43,7 @@ struct tegra_ehci_hcd { struct usb_phy *transceiver; int host_resumed; int port_resuming; + bool needs_double_reset; enum tegra_usb_phy_port_speed port_speed; }; @@ -184,7 +185,7 @@ static int tegra_ehci_hub_control( } /* For USB1 port we need to issue Port Reset twice internally */ - if (tegra->phy->instance == 0 && + if (tegra->needs_double_reset && (typeReq == SetPortFeature && wValue == USB_PORT_FEAT_RESET)) { spin_unlock_irqrestore(&ehci->lock, flags); return tegra_ehci_internal_port_reset(ehci, status_reg); @@ -666,6 +667,9 @@ static int tegra_ehci_probe(struct platform_device *pdev) clk_prepare_enable(tegra->emc_clk); clk_set_rate(tegra->emc_clk, 400000000); + tegra->needs_double_reset = of_property_read_bool(pdev->dev.of_node, + "nvidia,needs-double-reset"); + res = platform_get_resource(pdev, IORESOURCE_MEM, 0); if (!res) { dev_err(&pdev->dev, "Failed to get I/O memory\n"); -- 1.7.0.4