From 132f5005abbd480b66c58f8113ed876b99b6318e Mon Sep 17 00:00:00 2001 From: Jack Pham Date: Thu, 10 Dec 2015 18:28:53 -0600 Subject: [PATCH] usb: host: ehci-msm: Allow LS devices to work 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 Signed-off-by: Greg Kroah-Hartman --- 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 c23e2858c815..aed499d64029 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 e159b39f67a2..974c3796a23f 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 */ -- 2.20.1