From mboxrd@z Thu Jan 1 00:00:00 1970 From: Timur Tabi Subject: [PATCH 1/5] [v2] usb: host: ehci-msm: Allow LS devices to work Date: Thu, 10 Dec 2015 18:28:53 -0600 Message-ID: <1449793737-1816-1-git-send-email-timur@codeaurora.org> Return-path: Received: from smtp.codeaurora.org ([198.145.29.96]:54409 "EHLO smtp.codeaurora.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750951AbbLKA3C (ORCPT ); Thu, 10 Dec 2015 19:29:02 -0500 Sender: linux-arm-msm-owner@vger.kernel.org List-Id: linux-arm-msm@vger.kernel.org To: Felipe Balbi , Alan Stern , Bjorn Andersson , "Ivan T. Ivanov" , Andy Gross , Jack Pham , Greg Kroah-Hartman , linux-arm-msm@vger.kernel.org, linux-usb@vger.kernel.org, Philip Elcan , Mark Langsdorf , Jon Masters From: Jack Pham Disable the silicon quirk which is normally enabled for HSIC host mode. This would otherwise prevent low speed devices from enumerating properly. Signed-off-by: Jack Pham Signed-off-by: Timur Tabi --- drivers/usb/host/ehci-msm.c | 2 ++ include/linux/usb/msm_hsusb_hw.h | 1 + 2 files changed, 3 insertions(+) diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c index c23e285..aed499d 100644 --- a/drivers/usb/host/ehci-msm.c +++ b/drivers/usb/host/ehci-msm.c @@ -61,6 +61,8 @@ static int ehci_msm_reset(struct usb_hcd *hcd) writel(0x8, USB_AHBMODE); /* Disable streaming mode and select host mode */ writel(0x13, USB_USBMODE); + /* Disable ULPI_TX_PKT_EN_CLR_FIX which is valid only for HSIC */ + writel(readl(USB_GENCONFIG_2) & ~ULPI_TX_PKT_EN_CLR_FIX, USB_GENCONFIG_2); return 0; } diff --git a/include/linux/usb/msm_hsusb_hw.h b/include/linux/usb/msm_hsusb_hw.h index e159b39..974c379 100644 --- a/include/linux/usb/msm_hsusb_hw.h +++ b/include/linux/usb/msm_hsusb_hw.h @@ -22,6 +22,7 @@ #define USB_AHBBURST (MSM_USB_BASE + 0x0090) #define USB_AHBMODE (MSM_USB_BASE + 0x0098) #define USB_GENCONFIG_2 (MSM_USB_BASE + 0x00a0) +#define ULPI_TX_PKT_EN_CLR_FIX BIT(19) #define USB_CAPLENGTH (MSM_USB_BASE + 0x0100) /* 8 bit */ -- Qualcomm Innovation Center, Inc. The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.