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Groups > linux.kernel > #1263757
| From | Andy Gross <agross@codeaurora.org> |
|---|---|
| Newsgroups | linux.kernel |
| Subject | [PATCH 2/2] usb: host: ehci-msm: Use posted data writes on AHB |
| Date | 2015-11-06 07:10 +0100 |
| Message-ID | <qrInM-JI-11@gated-at.bofh.it> (permalink) |
| References | <qrInL-JI-5@gated-at.bofh.it> |
| Organization | linux.* mail to news gateway |
This patch sets the AHBMODE to allow for posted data writes. This results in higher performance. Signed-off-by: Andy Gross <agross@codeaurora.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@vger.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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[PATCH 0/2] Configure AHB to post data transfers Andy Gross <agross@codeaurora.org> - 2015-11-06 07:10 +0100
[PATCH 2/2] usb: host: ehci-msm: Use posted data writes on AHB Andy Gross <agross@codeaurora.org> - 2015-11-06 07:10 +0100
Re: [PATCH 2/2] usb: host: ehci-msm: Use posted data writes on AHB Georgi Djakov <georgi.djakov@linaro.org> - 2015-11-06 11:20 +0100
Re: [PATCH 2/2] usb: host: ehci-msm: Use posted data writes on AHB Alan Stern <stern@rowland.harvard.edu> - 2015-11-06 16:50 +0100
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