linux-kernel - [PATCH v1] arm64: dts: ti: verdin-am62: disable MIPI DSI bridge

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Message-Id: <20230922123003.25002-1-francesco@dolcini.it>
Date:   Fri, 22 Sep 2023 14:30:03 +0200
From:   Francesco Dolcini <francesco@...cini.it>
To:     Nishanth Menon <nm@...com>, Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>,
        Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        Francesco Dolcini <francesco.dolcini@...adex.com>
Cc:     linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org
Subject: [PATCH v1] arm64: dts: ti: verdin-am62: disable MIPI DSI bridge

From: Francesco Dolcini <francesco.dolcini@...adex.com>

Keep the DPI to MIPI-DSI bridge disabled in the SoM dtsi file.

The display chain is not wholly described in the device tree file, on
Verdin product family the displays are additional accessories that are
configured/enabled using DT overlays.

With this enabled we have issues when a display is enabled on
TIDSS port1 (LVDS) and port0 (DSI) is not used.

Fixes: 9e77200356ba ("arm64: dts: ti: verdin-am62: Add DSI display support")
Signed-off-by: Francesco Dolcini <francesco.dolcini@...adex.com>
---
 arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
index 40992e7e4c30..5db52f237253 100644
--- a/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62-verdin.dtsi
@@ -1061,6 +1061,7 @@ dsi_bridge: dsi@e {
 		vddc-supply = <&reg_1v2_dsi>;
 		vddmipi-supply = <&reg_1v2_dsi>;
 		vddio-supply = <&reg_1v8_dsi>;
+		status = "disabled";
 
 		dsi_bridge_ports: ports {
 			#address-cells = <1>;
-- 
2.25.1