linux-kernel - [PATCH] arm64: dts: rockchip: Disable CDN DP on Pinebook Pro

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Message-Id: <20210715164101.11486-1-matthias.bgg@kernel.org>
Date:   Thu, 15 Jul 2021 18:41:01 +0200
From:   matthias.bgg@...nel.org
To:     Rob Herring <robh+dt@...nel.org>, Heiko Stuebner <heiko@...ech.de>
Cc:     Matthias Brugger <mbrugger@...e.com>, devicetree@...r.kernel.org,
        Simon South <simon@...onsouth.net>,
        linux-arm-kernel@...ts.infradead.org,
        linux-rockchip@...ts.infradead.org,
        Guillaume Gardet <guillaume.gardet@....com>,
        linux-kernel@...r.kernel.org
Subject: [PATCH] arm64: dts: rockchip: Disable CDN DP on Pinebook Pro

From: Matthias Brugger <mbrugger@...e.com>

The CDN DP needs a PHY and a extcon to work correctly. But no extcon is
provided by the device-tree, which leads to an error:
cdn-dp fec00000.dp: [drm:cdn_dp_probe [rockchipdrm]] *ERROR* missing extcon or phy
cdn-dp: probe of fec00000.dp failed with error -22

Disable the CDN DP to make graphic work on the Pinebook Pro.

Reported-by: Guillaume Gardet <guillaume.gardet@....com>
Signed-off-by: Matthias Brugger <mbrugger@...e.com>

---

 arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts | 4 ----
 1 file changed, 4 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
index 2b5f001ff4a6..9e5d07f5712e 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3399-pinebook-pro.dts
@@ -385,10 +385,6 @@ mains_charger: dc-charger {
 	};
 };
 
-&cdn_dp {
-	status = "okay";
-};
-
 &cpu_b0 {
 	cpu-supply = <&vdd_cpu_b>;
 };
-- 
2.31.1