linux-kernel - [PATCH 1/3] arm64: dts: imx8dxl: add adc0 and adc1 support

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Message-Id: <20221104192135.1661541-1-Frank.Li@nxp.com>
Date:   Fri,  4 Nov 2022 15:21:25 -0400
From:   Frank Li <Frank.Li@....com>
To:     han.xu@....com, Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Shawn Guo <shawnguo@...nel.org>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Fabio Estevam <festevam@...il.com>,
        NXP Linux Team <linux-imx@....com>,
        Dong Aisheng <aisheng.dong@....com>,
        Peng Fan <peng.fan@....com>,
        Shenwei Wang <shenwei.wang@....com>,
        devicetree@...r.kernel.org (open list:OPEN FIRMWARE AND FLATTENED
        DEVICE TREE BINDINGS),
        linux-arm-kernel@...ts.infradead.org (moderated list:ARM/FREESCALE IMX
        / MXC ARM ARCHITECTURE), linux-kernel@...r.kernel.org (open list)
Cc:     imx@...ts.linux.dev
Subject: [PATCH 1/3] arm64: dts: imx8dxl: add adc0 and adc1 support

There are two adc controller in 8dxl.
Add adc node at common dma subsystem.
Enable adc0 at imx8dxl_evk boards dts.

Signed-off-by: Frank Li <Frank.Li@....com>
---
 .../arm64/boot/dts/freescale/imx8-ss-dma.dtsi | 52 +++++++++++++++++++
 arch/arm64/boot/dts/freescale/imx8dxl-evk.dts | 12 +++++
 .../boot/dts/freescale/imx8dxl-ss-adma.dtsi   |  4 ++
 3 files changed, 68 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
index d7b4229bb4a2..bdbb660c2682 100644
--- a/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8-ss-dma.dtsi
@@ -156,6 +156,34 @@ i2c3: i2c@...30000 {
 		status = "disabled";
 	};
 
+	adc0: adc@...80000 {
+		compatible = "nxp,imx8qxp-adc";
+		reg = <0x5a880000 0x10000>;
+		interrupts = <GIC_SPI 240 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-parent = <&gic>;
+		clocks = <&adc0_lpcg 0>,
+			 <&adc0_lpcg 1>;
+		clock-names = "per", "ipg";
+		assigned-clocks = <&clk IMX_SC_R_ADC_0 IMX_SC_PM_CLK_PER>;
+		assigned-clock-rates = <24000000>;
+		power-domains = <&pd IMX_SC_R_ADC_0>;
+		status = "disabled";
+	 };
+
+	adc1: adc@...90000 {
+		compatible = "nxp,imx8qxp-adc";
+		reg = <0x5a890000 0x10000>;
+		interrupts = <GIC_SPI 241 IRQ_TYPE_LEVEL_HIGH>;
+		interrupt-parent = <&gic>;
+		clocks = <&adc1_lpcg 0>,
+			 <&adc1_lpcg 1>;
+		clock-names = "per", "ipg";
+		assigned-clocks = <&clk IMX_SC_R_ADC_1 IMX_SC_PM_CLK_PER>;
+		assigned-clock-rates = <24000000>;
+		power-domains = <&pd IMX_SC_R_ADC_1>;
+		status = "disabled";
+	};
+
 	i2c0_lpcg: clock-controller@...00000 {
 		compatible = "fsl,imx8qxp-lpcg";
 		reg = <0x5ac00000 0x10000>;
@@ -203,4 +231,28 @@ i2c3_lpcg: clock-controller@...30000 {
 				     "i2c3_lpcg_ipg_clk";
 		power-domains = <&pd IMX_SC_R_I2C_3>;
 	};
+
+	adc0_lpcg: clock-controller@...80000 {
+		compatible = "fsl,imx8qxp-lpcg";
+		reg = <0x5ac80000 0x10000>;
+		#clock-cells = <1>;
+		clocks = <&clk IMX_SC_R_ADC_0 IMX_SC_PM_CLK_PER>,
+			 <&dma_ipg_clk>;
+		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>;
+		clock-output-names = "adc0_lpcg_clk",
+				     "adc0_lpcg_ipg_clk";
+		power-domains = <&pd IMX_SC_R_ADC_0>;
+	};
+
+	adc1_lpcg: clock-controller@...90000 {
+		compatible = "fsl,imx8qxp-lpcg";
+		reg = <0x5ac90000 0x10000>;
+		#clock-cells = <1>;
+		clocks = <&clk IMX_SC_R_ADC_1 IMX_SC_PM_CLK_PER>,
+			 <&dma_ipg_clk>;
+		clock-indices = <IMX_LPCG_CLK_0>, <IMX_LPCG_CLK_4>;
+		clock-output-names = "adc1_lpcg_clk",
+				     "adc1_lpcg_ipg_clk";
+		power-domains = <&pd IMX_SC_R_ADC_1>;
+	};
 };
diff --git a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
index fc9647ea50e9..11b1ff90c06d 100644
--- a/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
+++ b/arch/arm64/boot/dts/freescale/imx8dxl-evk.dts
@@ -91,6 +91,13 @@ reg_usdhc2_vmmc: regulator-3 {
 		off-on-delay-us = <3480>;
 	};
 
+	reg_vref_1v8: regulator-adc-vref {
+		compatible = "regulator-fixed";
+		regulator-name = "vref_1v8";
+		regulator-min-microvolt = <1800000>;
+		regulator-max-microvolt = <1800000>;
+	};
+
 	mii_select: regulator-4 {
 		compatible = "regulator-fixed";
 		regulator-name = "mii-select";
@@ -102,6 +109,11 @@ mii_select: regulator-4 {
 	};
 };
 
+&adc0 {
+	vref-supply = <&reg_vref_1v8>;
+	status = "okay";
+};
+
 &eqos {
 	pinctrl-names = "default";
 	pinctrl-0 = <&pinctrl_eqos>;
diff --git a/arch/arm64/boot/dts/freescale/imx8dxl-ss-adma.dtsi b/arch/arm64/boot/dts/freescale/imx8dxl-ss-adma.dtsi
index 795d1d472fae..ac3362e32811 100644
--- a/arch/arm64/boot/dts/freescale/imx8dxl-ss-adma.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8dxl-ss-adma.dtsi
@@ -11,6 +11,10 @@ &dma_ipg_clk {
 	clock-frequency = <160000000>;
 };
 
+&adc0 {
+	interrupts = <GIC_SPI 146 IRQ_TYPE_LEVEL_HIGH>;
+};
+
 &i2c0 {
 	compatible = "fsl,imx8dxl-lpi2c", "fsl,imx8qxp-lpi2c", "fsl,imx7ulp-lpi2c";
 	interrupts = <GIC_SPI 222 IRQ_TYPE_LEVEL_HIGH>;
-- 
2.34.1