linux-kernel - [PATCH v5] arm64: dts: ti: k3-j721s2: Add support for ADC nodes

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Date:   Tue, 14 Mar 2023 15:25:53 +0530
From:   Bhavya Kapoor <b-kapoor@...com>
To:     <devicetree@...r.kernel.org>, <robh+dt@...nel.org>
CC:     <nm@...com>, <vigneshr@...com>, <kristo@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>
Subject: [PATCH v5] arm64: dts: ti: k3-j721s2: Add support for ADC nodes

J721s2 has two instances of 8 channel ADCs in MCU domain. Add support
for both ADC nodes.

Signed-off-by: Bhavya Kapoor <b-kapoor@...com>
---

Changelog v4->v5:
- Modified commit message
- removed status = "disabled"; from tscadc nodes

Link to v4 : https://lore.kernel.org/all/20230313112834.16156-1-b-kapoor@ti.com/

Testlog : https://gist.github.com/a0498981/058c009e2937b423df02349ca78b4e29

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 12 ++++++
 .../boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi     | 38 +++++++++++++++++++
 2 files changed, 50 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
index a7aa6cf08acd..90162a0bb3e6 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-common-proc-board.dts
@@ -309,3 +309,15 @@ &mcu_mcan1 {
 	pinctrl-0 = <&mcu_mcan1_pins_default>;
 	phys = <&transceiver2>;
 };
+
+&tscadc0 {
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+	};
+};
+
+&tscadc1 {
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+	};
+};
diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
index 0af242aa9816..df8be8803dcb 100644
--- a/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi
@@ -306,4 +306,42 @@ cpts@...00 {
 			ti,cpts-periodic-outputs = <2>;
 		};
 	};
+
+	tscadc0: tscadc@...00000 {
+		compatible = "ti,am3359-tscadc";
+		reg = <0x00 0x40200000 0x00 0x1000>;
+		interrupts = <GIC_SPI 860 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 0 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 0 0>;
+		assigned-clocks = <&k3_clks 0 2>;
+		assigned-clock-rates = <60000000>;
+		clock-names = "fck";
+		dmas = <&main_udmap 0x7400>,
+			<&main_udmap 0x7401>;
+		dma-names = "fifo0", "fifo1";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
+
+	tscadc1: tscadc@...10000 {
+		compatible = "ti,am3359-tscadc";
+		reg = <0x00 0x40210000 0x00 0x1000>;
+		interrupts = <GIC_SPI 861 IRQ_TYPE_LEVEL_HIGH>;
+		power-domains = <&k3_pds 1 TI_SCI_PD_EXCLUSIVE>;
+		clocks = <&k3_clks 1 0>;
+		assigned-clocks = <&k3_clks 1 2>;
+		assigned-clock-rates = <60000000>;
+		clock-names = "fck";
+		dmas = <&main_udmap 0x7402>,
+			<&main_udmap 0x7403>;
+		dma-names = "fifo0", "fifo1";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
 };
-- 
2.34.1