linux-kernel - [PATCH] arm64: dts: rockchip: Enable HDMI receiver on CM3588

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Message-ID: <20250622185814.35031-1-valentin.haloiu@gmail.com>
Date: Sun, 22 Jun 2025 19:58:12 +0100
From: Valentin Hăloiu <valentin.haloiu@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Heiko Stuebner <heiko@...ech.de>
Cc: Valentin Hăloiu <valentin.haloiu@...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: Enable HDMI receiver on CM3588

Enable support for the HDMI input port found on FriendlyElec CM3588 and
CM3588 Plus.

Signed-off-by: Valentin Hăloiu <valentin.haloiu@...il.com>
---
 .../rockchip/rk3588-friendlyelec-cm3588-nas.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts b/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts
index 8171fbfd819a..5fbbeb6f5a93 100644
--- a/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts
+++ b/arch/arm64/boot/dts/rockchip/rk3588-friendlyelec-cm3588-nas.dts
@@ -335,6 +335,17 @@ hdmi0_out_con: endpoint {
 	};
 };
 
+&hdmi_receiver_cma {
+	status = "okay";
+};
+
+&hdmi_receiver {
+	hpd-gpios = <&gpio3 RK_PD4 GPIO_ACTIVE_HIGH>;
+	pinctrl-0 = <&hdmim1_rx_cec &hdmim1_rx_hpdin &hdmim1_rx_scl &hdmim1_rx_sda &hdmirx_hpd>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &hdptxphy0 {
 	status = "okay";
 };
@@ -478,6 +489,12 @@ key1_pin: key1-pin {
 		};
 	};
 
+	hdmirx {
+		hdmirx_hpd: hdmirx-5v-detection {
+			rockchip,pins = <3 RK_PD4 RK_FUNC_GPIO &pcfg_pull_up>;
+		};
+	};
+
 	pcie {
 		pcie2_0_rst: pcie2-0-rst {
 			rockchip,pins = <4 RK_PB4 RK_FUNC_GPIO &pcfg_pull_none>;
-- 
2.50.0