[PATCH v2 3/5] arm64: dts: exynos: gs101: allow stable USB phy Vbus detection

[André Draszik]

For the DWC3 core to reliably detect the connected phy's Vbus state, we
need to disable phy suspend.

Add
    snps,dis_u2_susphy_quirk
    snps,dis_u3_susphy_quirk
to do that.

While at it, also add
    snps,has-lpm-erratum
as this is set downstream which implies that the core was configured
with LPM Erratum. We should do the same here.

Signed-off-by: André Draszik <andre.draszik at linaro.org>

---
v2:
- drop snps,dis_rxdet_inp3_quirk and instead use the mentioned
  properties. The former alone wasn't reliable enough in all
  situations, e.g. when attached to certain USB hubs.
---
 arch/arm64/boot/dts/exynos/google/gs101.dtsi | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/arch/arm64/boot/dts/exynos/google/gs101.dtsi b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
index 18d4e7852a1a..c5335dd59dfe 100644
--- a/arch/arm64/boot/dts/exynos/google/gs101.dtsi
+++ b/arch/arm64/boot/dts/exynos/google/gs101.dtsi
@@ -1302,6 +1302,9 @@ usbdrd31_dwc3: usb at 0 {
 				interrupts = <GIC_SPI 463 IRQ_TYPE_LEVEL_HIGH 0>;
 				phys = <&usbdrd31_phy 0>, <&usbdrd31_phy 1>;
 				phy-names = "usb2-phy", "usb3-phy";
+				snps,has-lpm-erratum;
+				snps,dis_u2_susphy_quirk;
+				snps,dis_u3_susphy_quirk;
 				status = "disabled";
 			};
 		};

-- 
2.47.0.338.g60cca15819-goog