linux-kernel - [RFC v4 3/4] riscv: dts: starfive: jh7110: Add PWM node and pins configuration

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Message-ID: <20230825081328.204442-4-william.qiu@starfivetech.com>
Date:   Fri, 25 Aug 2023 16:13:27 +0800
From:   William Qiu <william.qiu@...rfivetech.com>
To:     <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-riscv@...ts.infradead.org>, <linux-pwm@...r.kernel.org>
CC:     Emil Renner Berthing <kernel@...il.dk>,
        Rob Herring <robh+dt@...nel.org>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        Thierry Reding <thierry.reding@...il.com>,
        Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Paul Walmsley" <paul.walmsley@...ive.com>,
        Palmer Dabbelt <palmer@...belt.com>,
        Albert Ou <aou@...s.berkeley.edu>,
        Hal Feng <hal.feng@...rfivetech.com>,
        William Qiu <william.qiu@...rfivetech.com>
Subject: [RFC v4 3/4] riscv: dts: starfive: jh7110: Add PWM node and pins configuration

Add StarFive JH7110 PWM controller node and add PWM pins configuration
on VisionFive 2 board.

Reviewed-by: Hal Feng <hal.feng@...rfivetech.com>
Signed-off-by: William Qiu <william.qiu@...rfivetech.com>
---
 .../jh7110-starfive-visionfive-2.dtsi         | 22 +++++++++++++++++++
 arch/riscv/boot/dts/starfive/jh7110.dtsi      |  9 ++++++++
 2 files changed, 31 insertions(+)

diff --git a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
index fa0061eb33a7..eba7331e1fe1 100644
--- a/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110-starfive-visionfive-2.dtsi
@@ -143,6 +143,12 @@ &i2c6 {
 	status = "okay";
 };

+&ptc {
+	pinctrl-names = "default";
+	pinctrl-0 = <&pwm_pins>;
+	status = "okay";
+};
+
 &sysgpio {
 	i2c0_pins: i2c0-0 {
 		i2c-pins {
@@ -200,6 +206,22 @@ GPOEN_SYS_I2C6_DATA,
 		};
 	};

+	pwm_pins: pwm-0 {
+		pwm-pins {
+			pinmux = <GPIOMUX(46, GPOUT_SYS_PWM_CHANNEL0,
+					      GPOEN_SYS_PWM0_CHANNEL0,
+					      GPI_NONE)>,
+				 <GPIOMUX(59, GPOUT_SYS_PWM_CHANNEL1,
+					      GPOEN_SYS_PWM0_CHANNEL1,
+					      GPI_NONE)>;
+			bias-disable;
+			drive-strength = <12>;
+			input-disable;
+			input-schmitt-disable;
+			slew-rate = <0>;
+		};
+	};
+
 	uart0_pins: uart0-0 {
 		tx-pins {
 			pinmux = <GPIOMUX(5, GPOUT_SYS_UART0_TX,
diff --git a/arch/riscv/boot/dts/starfive/jh7110.dtsi b/arch/riscv/boot/dts/starfive/jh7110.dtsi
index ec2e70011a73..2c808ea3ed40 100644
--- a/arch/riscv/boot/dts/starfive/jh7110.dtsi
+++ b/arch/riscv/boot/dts/starfive/jh7110.dtsi
@@ -473,6 +473,15 @@ i2c6: i2c@...60000 {
 			status = "disabled";
 		};

+		ptc: pwm@...d0000 {
+			compatible = "starfive,jh7110-pwm";
+			reg = <0x0 0x120d0000 0x0 0x10000>;
+			clocks = <&syscrg JH7110_SYSCLK_PWM_APB>;
+			resets = <&syscrg JH7110_SYSRST_PWM_APB>;
+			#pwm-cells = <3>;
+			status = "disabled";
+		};
+
 		syscrg: clock-controller@...20000 {
 			compatible = "starfive,jh7110-syscrg";
 			reg = <0x0 0x13020000 0x0 0x10000>;
--
2.34.1