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Commit 5ff33ae3 authored by Vijayavardhan Vennapusa's avatar Vijayavardhan Vennapusa
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USB: dwc3-msm: Turn on iface_clk before accessing AHB2PHY registers 



On some platforms, USB3 controller sits on PCNOC instead of SNOC.
In this case, it is required to turn on iface_clk(pcnoc_axi_clk)
and cfg_ahb_clk before accessing AHB2PHY register. Hence make
required change for turning on iface_clk before AHB2PHY register
access.

Change-Id: Idf069a07edfb3e03e62cefa91fbeaa4f297af89a
Signed-off-by: default avatarVijayavardhan Vennapusa <vvreddy@codeaurora.org>
parent cc339a2a

drivers/usb/dwc3/dwc3-msm.c

+2 −0
Original line number Diff line number Diff line
@@ -2779,6 +2779,7 @@ static int dwc3_msm_probe(struct platform_device *pdev) 
			 * turning on usb gdsc regulator clk is stuck off.

			 */

			dwc3_msm_config_gdsc(mdwc, 1);

			clk_prepare_enable(mdwc->iface_clk);

			clk_prepare_enable(mdwc->cfg_ahb_clk);

			/* Configure AHB2PHY for one wait state read/write*/

			val = readl_relaxed(mdwc->ahb2phy_base +
@@ -2791,6 +2792,7 @@ static int dwc3_msm_probe(struct platform_device *pdev) 
				mb();

			}

			clk_disable_unprepare(mdwc->cfg_ahb_clk);

			clk_disable_unprepare(mdwc->iface_clk);

			dwc3_msm_config_gdsc(mdwc, 0);

		}

	}