Commit 132f5005 authored by Jack Pham's avatar Jack Pham Committed by Greg Kroah-Hartman
Browse files

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: default avatarJack Pham <jackp@codeaurora.org>
Signed-off-by: default avatarTimur Tabi <timur@codeaurora.org>
Signed-off-by: default avatarGreg Kroah-Hartman <gregkh@linuxfoundation.org>
parent adbff3a4

drivers/usb/host/ehci-msm.c

+2 −0
Original line number Diff line number Diff line
@@ -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;

}

include/linux/usb/msm_hsusb_hw.h

+1 −0
Original line number Diff line number Diff line
@@ -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 */