From: Jack Pham <ja...@codeaurora.org>
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 <ja...@codeaurora.org>
Signed-off-by: Timur Tabi <ti...@codeaurora.org>
---
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 c4f84c8..d3ed6c9 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(0, 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.
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