diff mbox

[1/5,v2] usb: host: ehci-msm: Allow LS devices to work

Message ID 1449793737-1816-1-git-send-email-timur@codeaurora.org (mailing list archive)
State Not Applicable, archived
Delegated to: Andy Gross
Headers show

Commit Message

Timur Tabi Dec. 11, 2015, 12:28 a.m. UTC 
From: Jack Pham <jackp@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 <jackp@codeaurora.org>
Signed-off-by: Timur Tabi <timur@codeaurora.org>
---
 drivers/usb/host/ehci-msm.c      | 2 ++
 include/linux/usb/msm_hsusb_hw.h | 1 +
 2 files changed, 3 insertions(+)

Comments

Timur Tabi Jan. 6, 2016, 8:20 p.m. UTC | #1 
Timur Tabi wrote:
> From: Jack Pham <jackp@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 <jackp@codeaurora.org>
> Signed-off-by: Timur Tabi <timur@codeaurora.org>

Felipe, any change that these five patches can make it into 4.5?

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diff mbox

Patch

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 */