openwrt/package/boot/uboot-mediatek/patches/002-0018-arm-dts-mt7622-add-i2c-support.patch

From 9ae337317d5634569bda83dfc5e0658fce34b1e2 Mon Sep 17 00:00:00 2001
From: Weijie Gao <weijie.gao@mediatek.com>
Date: Mon, 25 Jul 2022 16:30:30 +0800
Subject: [PATCH 18/31] arm: dts: mt7622: add i2c support

Add both hardware and software i2c support for mt7622.

Reviewed-by: Simon Glass <sjg@chromium.org>
Signed-off-by: Weijie Gao <weijie.gao@mediatek.com>
---
 arch/arm/dts/mt7622-rfb.dts | 18 ++++++++++++++++++
 arch/arm/dts/mt7622.dtsi    | 24 ++++++++++++++++++++++++
 2 files changed, 42 insertions(+)

--- a/arch/arm/dts/mt7622-rfb.dts
+++ b/arch/arm/dts/mt7622-rfb.dts
@@ -159,6 +159,14 @@
 		};
 
 	};
+
+	i2c1_pins_default: i2c1-default {
+		mux {
+			function = "i2c";
+			groups = "i2c1_0";
+		};
+	};
+
 };
 
 &snfi {
@@ -249,3 +257,13 @@
 &u3phy {
        status = "okay";
 };
+
+&soft_i2c {
+	status = "disabled";
+};
+
+&i2c1 {
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins_default>;
+	status = "okay";
+};
--- a/arch/arm/dts/mt7622.dtsi
+++ b/arch/arm/dts/mt7622.dtsi
@@ -440,4 +440,28 @@
 		status = "disabled";
 	};
 
+	soft_i2c: soft_i2c@0 {
+		#address-cells = <1>;
+		#size-cells = <0>;
+		compatible = "i2c-gpio";
+		gpios = <&gpio 56 GPIO_ACTIVE_HIGH>, /* SDA */
+			<&gpio 55 GPIO_ACTIVE_HIGH>; /* CLK */
+		i2c-gpio,delay-us = <5>;
+		status = "disabled";
+	};
+
+	i2c1: i2c@11008000 {
+		compatible = "mediatek,mt7622-i2c";
+		reg = <0x11008000 0x90>,
+		      <0x11000180 0x80>;
+		interrupts = <GIC_SPI 85 IRQ_TYPE_LEVEL_LOW>;
+		clock-div = <16>;
+		clocks = <&pericfg CLK_PERI_I2C1_PD>,
+			 <&pericfg CLK_PERI_AP_DMA_PD>;
+		clock-names = "main", "dma";
+		#address-cells = <1>;
+		#size-cells = <0>;
+		status = "disabled";
+	};
+
 };