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: Martin Blumenstingl <martin.blumenstingl@googlemail.com> Tested-by: Yixun Lan <yixun.lan@amlogic.com> Signed-off-by: Felipe Balbi <felipe.balbi@linux.intel.com>
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@ -93,6 +93,12 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
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platform_set_drvdata(pdev, simple);
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simple->dev = dev;
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if (of_device_is_compatible(np, "amlogic,meson-axg-dwc3") ||
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of_device_is_compatible(np, "amlogic,meson-gxl-dwc3")) {
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shared_resets = true;
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simple->pulse_resets = true;
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}
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simple->resets = of_reset_control_array_get(np, shared_resets, true);
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if (IS_ERR(simple->resets)) {
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ret = PTR_ERR(simple->resets);
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@ -207,6 +213,8 @@ static const struct of_device_id of_dwc3_simple_match[] = {
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{ .compatible = "xlnx,zynqmp-dwc3" },
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{ .compatible = "cavium,octeon-7130-usb-uctl" },
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{ .compatible = "sprd,sc9860-dwc3" },
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{ .compatible = "amlogic,meson-axg-dwc3" },
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{ .compatible = "amlogic,meson-gxl-dwc3" },
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{ /* Sentinel */ }
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};
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MODULE_DEVICE_TABLE(of, of_dwc3_simple_match);
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