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Date: Fri, 6 Nov 2015 00:04:07 -0600 From: Andy Gross <agross@...eaurora.org> To: linux-usb@...r.kernel.org Cc: Greg KH <gregkh@...uxfoundation.org>, Peter Chen <Peter.Chen@...escale.com>, Alan Stern <stern@...land.harvard.edu>, linux-kernel@...r.kernel.org, linux-arm-msm@...r.kernel.org, Andy Gross <agross@...eaurora.org> Subject: [PATCH 2/2] usb: host: ehci-msm: Use posted data writes on AHB This patch sets the AHBMODE to allow for posted data writes. This results in higher performance. Signed-off-by: Andy Gross <agross@...eaurora.org> --- drivers/usb/host/ehci-msm.c | 4 ++-- 1 file changed, 2 insertions(+), 2 deletions(-) diff --git a/drivers/usb/host/ehci-msm.c b/drivers/usb/host/ehci-msm.c index c4f84c8..c23e285 100644 --- a/drivers/usb/host/ehci-msm.c +++ b/drivers/usb/host/ehci-msm.c @@ -57,8 +57,8 @@ static int ehci_msm_reset(struct usb_hcd *hcd) /* bursts of unspecified length. */ writel(0, USB_AHBBURST); - /* Use the AHB transactor */ - writel(0, USB_AHBMODE); + /* Use the AHB transactor, allow posted data writes */ + writel(0x8, USB_AHBMODE); /* Disable streaming mode and select host mode */ writel(0x13, USB_USBMODE); -- The Qualcomm Innovation Center, Inc. is a member of the Code Aurora Forum, hosted by The Linux Foundation -- To unsubscribe from this list: send the line "unsubscribe linux-kernel" in the body of a message to majordomo@...r.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html Please read the FAQ at http://www.tux.org/lkml/
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