linux-kernel - [PATCH] arm64: dts: rockchip: Fix Quartz64-A dwc3 otg port behavior

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Date:   Fri, 10 Jun 2022 09:25:42 -0400
From:   Peter Geis <pgwipeout@...il.com>
To:     Heiko Stuebner <heiko@...ech.de>, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Riesch <michael.riesch@...fvision.net>
Cc:     Peter Geis <pgwipeout@...il.com>, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: rockchip: Fix Quartz64-A dwc3 otg port behavior

The otg_id line on the Quartz64 Model A is not connected to anything.
This prevents automatic selection of the dual role usb port. In otg mode
it defaults to device mode. Force it to host mode to retain previous
behavior.

Fixes: bc405bb3eeee ("arm64: dts: rockchip: enable otg/drd operation of usb_host0_xhci in rk356x")

Signed-off-by: Peter Geis <pgwipeout@...il.com>
---
 arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
index 1534e11a9ad1..fa953b736642 100644
--- a/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3566-quartz64-a.dts
@@ -687,6 +687,7 @@ &usb_host1_ohci {
 };
 
 &usb_host0_xhci {
+	dr_mode = "host";
 	status = "okay";
 };
 
-- 
2.25.1