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From: Farouk Bouabid <farouk.bouabid@cherry.de>
Date: Mon, 06 May 2024 13:37:55 +0200
Subject: [PATCH v2 4/7] arm64: dts: rockchip: add mule i2c mux (0x18) on
 rk3399-puma
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References: <20240506-dev-mule-i2c-mux-v2-0-a91c954f65d7@cherry.de>
In-Reply-To: <20240506-dev-mule-i2c-mux-v2-0-a91c954f65d7@cherry.de>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>, 
 Peter Rosin <peda@axentia.se>, Andi Shyti <andi.shyti@kernel.org>, 
 Rob Herring <robh@kernel.org>, 
 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, 
 Conor Dooley <conor+dt@kernel.org>, 
 Farouk Bouabid <farouk.bouabid@cherry.de>, 
 Quentin Schulz <quentin.schulz@cherry.de>, Heiko Stuebner <heiko@sntech.de>, 
 Quentin Schulz <quentin.schulz@theobroma-systems.com>
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 devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
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Mule emulates an i2c mux (address 0x18). The amc6821 is exposed behind
this bus.

Add the mux node and amc6821 as a default device.

Signed-off-by: Farouk Bouabid <farouk.bouabid@cherry.de>
---
 arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi | 20 +++++++++++++++++---
 1 file changed, 17 insertions(+), 3 deletions(-)

diff --git a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
index c08e69391c01..e7313be24c1a 100644
--- a/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
+++ b/arch/arm64/boot/dts/rockchip/rk3399-puma.dtsi
@@ -10,6 +10,7 @@
 / {
 	aliases {
 		ethernet0 = &gmac;
+		i2c10 = &i2c10;
 		mmc0 = &sdhci;
 	};
 
@@ -357,10 +358,23 @@ &i2c7 {
 	status = "okay";
 	clock-frequency = <400000>;
 
-	fan: fan@18 {
-		compatible = "ti,amc6821";
+	i2c-mux@18 {
+		compatible = "tsd,mule-i2c-mux";
 		reg = <0x18>;
-		#cooling-cells = <2>;
+		#address-cells = <1>;
+		#size-cells = <0>;
+
+		i2c10: i2c@0 {
+			reg = <0x0>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			fan: fan@18 {
+				compatible = "ti,amc6821";
+				reg = <0x18>;
+				#cooling-cells = <2>;
+			};
+		};
 	};
 
 	rtc_twi: rtc@6f {

-- 
2.34.1