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Commit e8284db4 authored by Martin Blumenstingl's avatar Martin Blumenstingl Committed by Felipe Balbi
Browse files

usb: dwc3: of-simple: add support for the Amlogic Meson GXL and AXG SoCs 



Amlogic Meson GXL and AXG SoCs come with a (host-only) dwc3 USB
controller. To use this controller a clock has to be enabled and a reset
line has to be pulsed.
Enabling the clock works identical to other SoCs. However, the reset
line has to be pulsed (using reset_control_reset) instead of using a
level reset (reset_control_{assert,deassert}).

Signed-off-by: default avatarMartin Blumenstingl <martin.blumenstingl@googlemail.com>
Tested-by: default avatarYixun Lan <yixun.lan@amlogic.com>
Signed-off-by: default avatarFelipe Balbi <felipe.balbi@linux.intel.com>
parent ff0a632f

drivers/usb/dwc3/dwc3-of-simple.c

+8 −0
Original line number Diff line number Diff line
@@ -93,6 +93,12 @@ static int dwc3_of_simple_probe(struct platform_device *pdev) 
	platform_set_drvdata(pdev, simple);

	simple->dev = dev;



	if (of_device_is_compatible(np, "amlogic,meson-axg-dwc3") ||

	    of_device_is_compatible(np, "amlogic,meson-gxl-dwc3")) {

		shared_resets = true;

		simple->pulse_resets = true;

	}



	simple->resets = of_reset_control_array_get(np, shared_resets, true);

	if (IS_ERR(simple->resets)) {

		ret = PTR_ERR(simple->resets);
@@ -207,6 +213,8 @@ static const struct of_device_id of_dwc3_simple_match[] = { 
	{ .compatible = "xlnx,zynqmp-dwc3" },

	{ .compatible = "cavium,octeon-7130-usb-uctl" },

	{ .compatible = "sprd,sc9860-dwc3" },

	{ .compatible = "amlogic,meson-axg-dwc3" },

	{ .compatible = "amlogic,meson-gxl-dwc3" },

	{ /* Sentinel */ }

};

MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);