linux-kernel - [PATCH v4 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

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Message-Id: <20221122-mt8365-i2c-support-v4-2-885ad3301d5a@baylibre.com>
Date:   Tue, 07 Mar 2023 13:41:08 +0100
From:   Alexandre Mergnat <amergnat@...libre.com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Qii Wang <qii.wang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>
Cc:     linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org,
        AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>,
        devicetree@...r.kernel.org,
        Alexandre Mergnat <amergnat@...libre.com>,
        Fabien Parent <fparent@...libre.com>,
        Rob Herring <robh@...nel.org>, linux-kernel@...r.kernel.org,
        linux-i2c@...r.kernel.org
Subject: [PATCH v4 2/2] arm64: dts: mediatek: enable i2c0 for mt8365-evk board

Enable the I2C0 bus provides communication with:
- The integrated RT9466 Switching Battery Charger.
- The integrated MT6691 LP4X buck for VDDQ.
- The integrated MT6691 LP4X buck for VDD2.
- The pin header, to plug external I2C devices.

Signed-off-by: Alexandre Mergnat <amergnat@...libre.com>
---
 arch/arm64/boot/dts/mediatek/mt8365-evk.dts | 17 +++++++++++++++++
 1 file changed, 17 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
index 4683704ea235..bfaee9a4a38b 100644
--- a/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
+++ b/arch/arm64/boot/dts/mediatek/mt8365-evk.dts
@@ -87,6 +87,13 @@ optee_reserved: optee@...00000 {
 	};
 };
 
+&i2c0 {
+	clock-frequency = <100000>;
+	pinctrl-0 = <&i2c0_pins>;
+	pinctrl-names = "default";
+	status = "okay";
+};
+
 &pio {
 	gpio_keys: gpio-keys-pins {
 		pins {
@@ -96,6 +103,16 @@ pins {
 		};
 	};
 
+	i2c0_pins: i2c0-pins {
+		pins {
+			bias-pull-up;
+			mediatek,drive-strength-adv = <0>;
+			mediatek,pull-up-adv = <3>;
+			pinmux = <MT8365_PIN_57_SDA0__FUNC_SDA0_0>,
+				 <MT8365_PIN_58_SCL0__FUNC_SCL0_0>;
+		};
+	};
+
 	uart0_pins: uart0-pins {
 		pins {
 			pinmux = <MT8365_PIN_35_URXD0__FUNC_URXD0>,

-- 
b4 0.10.1