linux-kernel - [PATCH] arm64: dts: mediatek: mt7981: add I2C controller

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Date: Fri,  5 Apr 2024 14:55:05 +0200
From: Rafał Miłecki <zajec5@...il.com>
To: Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org,
	Rafał Miłecki <rafal@...ecki.pl>
Subject: [PATCH] arm64: dts: mediatek: mt7981: add I2C controller

From: Rafał Miłecki <rafal@...ecki.pl>

MT7981 has one on-SoC I2C controller that differs from recent Mediatek
blocks by having a different SLAVE_ADDR register offset (thus a custom
binding compatible string).

Signed-off-by: Rafał Miłecki <rafal@...ecki.pl>
---
 arch/arm64/boot/dts/mediatek/mt7981b.dtsi | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
index 8a6263cc569c..2d7f91196e64 100644
--- a/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt7981b.dtsi
@@ -94,6 +94,23 @@ pwm@...48000 {
 			#pwm-cells = <2>;
 		};
 
+		i2c@...07000 {
+			compatible = "mediatek,mt7981-i2c";
+			reg = <0 0x11007000 0 0x1000>,
+			      <0 0x10217080 0 0x80>;
+			interrupts = <GIC_SPI 136 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&infracfg CLK_INFRA_I2C0_CK>,
+				 <&infracfg CLK_INFRA_AP_DMA_CK>,
+				 <&infracfg CLK_INFRA_I2C_MCK_CK>,
+				 <&infracfg CLK_INFRA_I2C_PCK_CK>;
+			clock-names = "main", "dma", "arb", "pmic";
+			clock-div = <1>;
+			clock-frequency = <100000>;
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+		};
+
 		pio: pinctrl@...00000 {
 			compatible = "mediatek,mt7981-pinctrl";
 			reg = <0 0x11d00000 0 0x1000>,
-- 
2.35.3