android/android_kernel_samsung_sm8650
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usb: host: ehci-msm: Allow LS devices to work

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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 <jackp@codeaurora.org>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
Signed-off-by: Greg Kroah-Hartman <gregkh@linuxfoundation.org>
This commit is contained in:
Jack Pham
2015-12-10 18:28:53 -06:00
committed by Greg Kroah-Hartman
parent adbff3a4f9
commit 132f5005ab
2 changed files with 3 additions and 0 deletions
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2
drivers/usb/host/ehci-msm.c
View File

@ -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;
}

1
include/linux/usb/msm_hsusb_hw.h
View File

@ -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 */