linux-kernel - [PATCH v1 04/10] arm64: dts: mediatek: asurada: Enable and configure I2C and SPI busses

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Date:   Wed, 16 Mar 2022 11:13:21 -0400
From:   Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>
To:     Matthias Brugger <matthias.bgg@...il.com>
Cc:     AngeloGioacchino Del Regno 
        <angelogioacchino.delregno@...labora.com>, kernel@...labora.com,
        Nícolas F. R. A. Prado 
        <nfraprado@...labora.com>, Rob Herring <robh+dt@...nel.org>,
        devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-kernel@...r.kernel.org, linux-mediatek@...ts.infradead.org
Subject: [PATCH v1 04/10] arm64: dts: mediatek: asurada: Enable and configure I2C and SPI busses

The Asurada platform has five I2C controllers and two SPI controllers
that are used. In preparation for enabling the devices connected to
these controllers, enable and configure their busses.

Signed-off-by: Nícolas F. R. A. Prado <nfraprado@...labora.com>
Reviewed-by: AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>
---

 .../boot/dts/mediatek/mt8192-asurada.dtsi     | 130 ++++++++++++++++++
 1 file changed, 130 insertions(+)

diff --git a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
index 5cb7580a13cf..3c5b1e475cf6 100644
--- a/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
+++ b/arch/arm64/boot/dts/mediatek/mt8192-asurada.dtsi
@@ -85,6 +85,47 @@ ppvar_sys: ppvar-sys {
 	};
 };
 
+&i2c0 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c0_pins>;
+};
+
+&i2c1 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c1_pins>;
+};
+
+&i2c2 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	clock-stretch-ns = <12600>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c2_pins>;
+};
+
+&i2c3 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c3_pins>;
+};
+
+&i2c7 {
+	status = "okay";
+
+	clock-frequency = <400000>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&i2c7_pins>;
+};
+
 &pio {
 	/* 220 lines */
 	gpio-line-names = "I2S_DP_LRCK",
@@ -311,6 +352,95 @@ &pio {
 			  "AUD_DAT_MOSI1",
 			  "AUD_DAT_MISO0",
 			  "AUD_DAT_MISO1";
+
+	i2c0_pins: i2c0-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO204__FUNC_SCL0>,
+				 <PINMUX_GPIO205__FUNC_SDA0>;
+			bias-pull-up;
+			mediatek,pull-up-adv = <3>;
+			mediatek,drive-strength-adv = <7>;
+		};
+	};
+
+	i2c1_pins: i2c1-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO118__FUNC_SCL1>,
+				 <PINMUX_GPIO119__FUNC_SDA1>;
+			bias-pull-up;
+			mediatek,pull-up-adv = <3>;
+			mediatek,drive-strength-adv = <7>;
+		};
+	};
+
+	i2c2_pins: i2c2-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO141__FUNC_SCL2>,
+				 <PINMUX_GPIO142__FUNC_SDA2>;
+			bias-pull-up;
+			mediatek,pull-up-adv = <3>;
+			mediatek,drive-strength-adv = <0>;
+		};
+	};
+
+	i2c3_pins: i2c3-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO160__FUNC_SCL3>,
+				 <PINMUX_GPIO161__FUNC_SDA3>;
+			bias-disable;
+			mediatek,drive-strength-adv = <7>;
+		};
+	};
+
+	i2c7_pins: i2c7-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO124__FUNC_SCL7>,
+				 <PINMUX_GPIO125__FUNC_SDA7>;
+			bias-disable;
+			mediatek,drive-strength-adv = <7>;
+		};
+	};
+
+	spi1_pins: spi1-default-pins {
+		pins-cs-mosi-clk {
+			pinmux = <PINMUX_GPIO157__FUNC_SPI1_A_CSB>,
+				 <PINMUX_GPIO159__FUNC_SPI1_A_MO>,
+				 <PINMUX_GPIO156__FUNC_SPI1_A_CLK>;
+			bias-disable;
+		};
+
+		pins-miso {
+			pinmux = <PINMUX_GPIO158__FUNC_SPI1_A_MI>;
+			bias-pull-down;
+		};
+	};
+
+	spi5_pins: spi5-default-pins {
+		pins-bus {
+			pinmux = <PINMUX_GPIO38__FUNC_SPI5_A_MI>,
+				 <PINMUX_GPIO37__FUNC_GPIO37>,
+				 <PINMUX_GPIO39__FUNC_SPI5_A_MO>,
+				 <PINMUX_GPIO36__FUNC_SPI5_A_CLK>;
+			bias-disable;
+		};
+	};
+};
+
+&spi1 {
+	status = "okay";
+
+	mediatek,pad-select = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi1_pins>;
+};
+
+&spi5 {
+	status = "okay";
+
+	cs-gpios = <&pio 37 GPIO_ACTIVE_LOW>;
+	mediatek,pad-select = <0>;
+	pinctrl-names = "default";
+	pinctrl-0 = <&spi5_pins>;
 };
 
 &uart0 {
-- 
2.35.1