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Commit ae299815 authored by Manu Gautam's avatar Manu Gautam
Browse files

USB: phy-msm: Disable USB_BAM in host mode 



USB_BAM is used only in peripheral mode. If a platform
has bam2bam functions enabled in peripheral mode then
reset routine i.e. msm_otg_reset enables USB_BAM in
host mode also. Since, host mode doesn't use bam2bam mode
disable the same as it may slow down DDR access by USB.

Change-Id: If3f358362c26447c91ea6f0081b5237b162123a1
Signed-off-by: default avatarManu Gautam <mgautam@codeaurora.org>
parent 880349c3

drivers/usb/phy/phy-msm-usb.c

+9 −1
Original line number Diff line number Diff line
@@ -808,7 +808,12 @@ static int msm_otg_reset(struct usb_phy *phy) 
	 * Enable USB BAM if USB BAM is enabled already before block reset as

	 * block reset also resets USB BAM registers.

	 */

	msm_usb_bam_enable(CI_CTRL, phy->otg->gadget->bam2bam_func_enabled);

	if (test_bit(ID, &motg->inputs)) {

		msm_usb_bam_enable(CI_CTRL,

				   phy->otg->gadget->bam2bam_func_enabled);

	} else {

		dev_dbg(phy->dev, "host mode BAM not enabled\n");

	}



	return 0;

}
@@ -1917,6 +1922,8 @@ static void msm_otg_start_host(struct usb_otg *otg, int on) 
		msm_otg_dbg_log_event(&motg->phy, "HOST ON",

				motg->inputs, otg->phy->state);

		msm_hsusb_vbus_power(motg, 1);

		msm_otg_reset(&motg->phy);



		if (pdata->otg_control == OTG_PHY_CONTROL)

			ulpi_write(otg->phy, OTG_COMP_DISABLE,

				ULPI_SET(ULPI_PWR_CLK_MNG_REG));
@@ -1948,6 +1955,7 @@ static void msm_otg_start_host(struct usb_otg *otg, int on) 
		pm_qos_remove_request(&motg->pm_qos_req_dma);



		usb_remove_hcd(hcd);

		msm_otg_reset(&motg->phy);



		if (pdata->enable_axi_prefetch)

			writel_relaxed(readl_relaxed(USB_HS_APF_CTRL)