Merge "ARM: dts: msm: Disable USB controller's clock gating on 8996v1 devices" (46fb1f48) · Commits · e / devices / android_kernel_xiaomi_markw

Documentation/devicetree/bindings/usb/dwc3.txt

+1 −0

Original line number	Diff line number	Diff line
		@@ -24,6 +24,7 @@ Optional properties:
		- snps,lpm-nyet-thresh: If present, will determine the value of DCTL[LPM_NYET_Thres].
		If BESL value received from the host in the LPM token is less than this value we send LPM ACK to
		the host. Otherwise the device returns LPM NYET.
		- snps,disable-clk-gating: If present, disable controller's internal clock gating. Default it is enabled.

		This is usually a subnode to DWC3 glue to which it is connected.

+1 −0

+6 −1

Original line number	Diff line number	Diff line
		@@ -565,7 +565,10 @@ int dwc3_core_init(struct dwc3 *dwc)
		* stuck when entering low power modes. Revisit when there is
		* a way to differentiate HW that no longer needs this.
		*/
		if (dwc->disable_clk_gating) {
		dev_dbg(dwc->dev, "Disabling controller clock gating.\n");
		reg \|= DWC3_GCTL_DSBLCLKGTNG;
		}

		dwc3_writel(dwc->regs, DWC3_GCTL, reg);

		@@ -870,6 +873,8 @@ static int dwc3_probe(struct platform_device *pdev)
		if (!ret)
		dwc->lpm_nyet_thresh = (u8)lpm_nyet_thresh;

		dwc->disable_clk_gating = of_property_read_bool(node,
		"snps,disable-clk-gating");
		if (dwc->enable_bus_suspend) {
		pm_runtime_set_autosuspend_delay(dev, 500);
		pm_runtime_use_autosuspend(dev);

+2 −0

Original line number	Diff line number	Diff line
		@@ -927,6 +927,8 @@ struct dwc3 {
		unsigned err_evt_seen:1;
		unsigned usb3_u1u2_disable:1;
		unsigned enable_bus_suspend:1;
		/* Indicate if need to disable controller internal clkgating */
		unsigned disable_clk_gating:1;

		struct dwc3_gadget_events dbg_gadget_events;