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Commit de2ef6e6 authored Nov 02, 2017 by Hemant Kumar

usb: dwc3: Read snps,bus-suspend-enable property



Driver needs to read this property to enable usb low power
mode in device bus suspend when usb cable is plugged in.

Change-Id: Ie53950541c178b6844af55a1c346d8abeb0b6e7c
Signed-off-by: Hemant Kumar <hemantk@codeaurora.org>

parent f797d13b

Documentation/devicetree/bindings/usb/dwc3.txt

+2 −0

Original line number	Diff line number	Diff line
		@@ -59,6 +59,8 @@ Optional properties:
		- snps,xhci-imod-value: Interrupt moderation interval for host mode
		(in increments of 250nsec).
		- usb-core-id: Differentiates between different controllers present on a device.
		- snps,bus-suspend-enable: If present then controller supports low power mode
		during bus suspend.

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

drivers/usb/dwc3/core.c

+2 −1

Original line number	Diff line number	Diff line
		@@ -1218,7 +1218,8 @@ static int dwc3_probe(struct platform_device *pdev)
		&dwc->fladj);
		dwc->disable_clk_gating = device_property_read_bool(dev,
		"snps,disable-clk-gating");

		dwc->enable_bus_suspend = device_property_read_bool(dev,
		"snps,bus-suspend-enable");
		if (dwc->enable_bus_suspend) {
		pm_runtime_set_autosuspend_delay(dev, 500);
		pm_runtime_use_autosuspend(dev);