From:   Bhavya Kapoor <b-kapoor@ti.com>
To:     <devicetree@vger.kernel.org>, <robh+dt@kernel.org>
CC:     <nm@ti.com>, <vigneshr@ti.com>, <kristo@kernel.org>,
        <krzysztof.kozlowski+dt@linaro.org>,
        <linux-arm-kernel@lists.infradead.org>,
        <linux-kernel@vger.kernel.org>
Subject: [PATCH v6] arm64: dts: ti: k3-j721s2: Add support for ADC nodes
Date:   Tue, 14 Mar 2023 16:59:39 +0530
Message-ID: <20230314112939.139894-1-b-kapoor@ti.com>
MIME-Version: 1.0
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Precedence: bulk

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

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

Changelog v5->v6:
- Added pinmux for ADCs

link to v5 patch : https://lore.kernel.org/all/20230314095553.110559-1-b-kapoor@ti.com/

Testlog for v6 : https://gist.github.com/a0498981/c70327e178cb11c09b8df757e772e9be

 .../dts/ti/k3-j721s2-common-proc-board.dts    | 44 +++++++++++++++++++
 .../boot/dts/ti/k3-j721s2-mcu-wakeup.dtsi     | 40 +++++++++++++++++
 2 files changed, 84 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..b4b9edfe2d12 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
@@ -197,6 +197,32 @@ mcu_mcan1_gpio_pins_default: mcu-mcan1-gpio-pins-default {
 			J721S2_WKUP_IOPAD(0x0c8, PIN_INPUT, 7) /* (C28) WKUP_GPIO0_2 */
 		>;
 	};
+
+	mcu_adc0_pins_default: mcu-adc0-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x134, PIN_INPUT, 0) /* (L25) MCU_ADC0_AIN0 */
+			J721S2_WKUP_IOPAD(0x138, PIN_INPUT, 0) /* (K25) MCU_ADC0_AIN1 */
+			J721S2_WKUP_IOPAD(0x13c, PIN_INPUT, 0) /* (M24) MCU_ADC0_AIN2 */
+			J721S2_WKUP_IOPAD(0x140, PIN_INPUT, 0) /* (L24) MCU_ADC0_AIN3 */
+			J721S2_WKUP_IOPAD(0x144, PIN_INPUT, 0) /* (L27) MCU_ADC0_AIN4 */
+			J721S2_WKUP_IOPAD(0x148, PIN_INPUT, 0) /* (K24) MCU_ADC0_AIN5 */
+			J721S2_WKUP_IOPAD(0x14c, PIN_INPUT, 0) /* (M27) MCU_ADC0_AIN6 */
+			J721S2_WKUP_IOPAD(0x150, PIN_INPUT, 0) /* (M26) MCU_ADC0_AIN7 */
+		>;
+	};
+
+	mcu_adc1_pins_default: mcu-adc1-pins-default {
+		pinctrl-single,pins = <
+			J721S2_WKUP_IOPAD(0x154, PIN_INPUT, 0) /* (P25) MCU_ADC1_AIN0 */
+			J721S2_WKUP_IOPAD(0x158, PIN_INPUT, 0) /* (R25) MCU_ADC1_AIN1 */
+			J721S2_WKUP_IOPAD(0x15c, PIN_INPUT, 0) /* (P28) MCU_ADC1_AIN2 */
+			J721S2_WKUP_IOPAD(0x160, PIN_INPUT, 0) /* (P27) MCU_ADC1_AIN3 */
+			J721S2_WKUP_IOPAD(0x164, PIN_INPUT, 0) /* (N25) MCU_ADC1_AIN4 */
+			J721S2_WKUP_IOPAD(0x168, PIN_INPUT, 0) /* (P26) MCU_ADC1_AIN5 */
+			J721S2_WKUP_IOPAD(0x16c, PIN_INPUT, 0) /* (N26) MCU_ADC1_AIN6 */
+			J721S2_WKUP_IOPAD(0x170, PIN_INPUT, 0) /* (N27) MCU_ADC1_AIN7 */
+		>;
+	};
 };
 
 &main_gpio2 {
@@ -309,3 +335,21 @@ &mcu_mcan1 {
 	pinctrl-0 = <&mcu_mcan1_pins_default>;
 	phys = <&transceiver2>;
 };
+
+&tscadc0 {
+	pinctrl-0 = <&mcu_adc0_pins_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	adc {
+		ti,adc-channels = <0 1 2 3 4 5 6 7>;
+	};
+};
+
+&tscadc1 {
+	pinctrl-0 = <&mcu_adc1_pins_default>;
+	pinctrl-names = "default";
+	status = "okay";
+	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..5da5f0cf7009 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 +306,44 @@ cpts@3d000 {
 			ti,cpts-periodic-outputs = <2>;
 		};
 	};
+
+	tscadc0: tscadc@40200000 {
+		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";
+		status = "disabled";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
+
+	tscadc1: tscadc@40210000 {
+		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";
+		status = "disabled";
+
+		adc {
+			#io-channel-cells = <1>;
+			compatible = "ti,am3359-adc";
+		};
+	};
 };
-- 
2.34.1