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Message-ID: <6eba6c10-9c96-b40f-937a-e02d43b04cd7@gmail.com>
Date:   Thu, 29 Sep 2022 16:04:06 +0200
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From:   Johan Jonker <jbx6244@gmail.com>
Subject: [RFC PATCH v1 2/2] ARM: dts: rk3288: add the interrupts property for
 PWM
To:     heiko@sntech.de
Cc:     thierry.reding@gmail.com, u.kleine-koenig@pengutronix.de,
        robh+dt@kernel.org, krzysztof.kozlowski+dt@linaro.org,
        sebastian.reichel@collabora.com, wxt@rock-chips.com,
        kever.yang@rock-chips.com, linux-pwm@vger.kernel.org,
        devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
        linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org
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The Rockchip rk3288 SoC has 4-built-in PWM channels.

Configurable to operate in capture mode.
Measures the high/low polarity effective cycles of this input waveform
Generates a single interrupt at the transition of input waveform polarity

Configurable to operate in continuous mode or one-shot mode.
One-shot operation will produce N + 1 periods of the waveform,
where N is the repeat counter value, and generates a single interrupt at
the end of operation.
Continuous mode generates the waveform continuously and
do not generates any interrupts.

Add interrupts property to rk3288 PWM nodes.

Signed-off-by: Caesar Wang <wxt@rock-chips.com>
Signed-off-by: Johan Jonker <jbx6244@gmail.com>

---

Original patch location:
  ARM: dts: rk3288: add the interrupts property for PWM
  https://github.com/rockchip-linux/kernel/commit/16b7b284618d1652e694f6286f575ce82f5f03e5

---

"rockchip,rk3288-pwm" is in use as fall back string for Rockchip SoCs with combined
PWM interrupt.
---
 arch/arm/boot/dts/rk3288.dtsi | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/arch/arm/boot/dts/rk3288.dtsi b/arch/arm/boot/dts/rk3288.dtsi
index 487b0e03d..1223aa369 100644
--- a/arch/arm/boot/dts/rk3288.dtsi
+++ b/arch/arm/boot/dts/rk3288.dtsi
@@ -675,6 +675,7 @@
 	pwm0: pwm@ff680000 {
 		compatible = "rockchip,rk3288-pwm";
 		reg = <0x0 0xff680000 0x0 0x10>;
+		interrupts = <GIC_SPI 74 IRQ_TYPE_LEVEL_HIGH>;
 		#pwm-cells = <3>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwm0_pin>;
@@ -685,6 +686,7 @@
 	pwm1: pwm@ff680010 {
 		compatible = "rockchip,rk3288-pwm";
 		reg = <0x0 0xff680010 0x0 0x10>;
+		interrupts = <GIC_SPI 75 IRQ_TYPE_LEVEL_HIGH>;
 		#pwm-cells = <3>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwm1_pin>;
@@ -695,6 +697,7 @@
 	pwm2: pwm@ff680020 {
 		compatible = "rockchip,rk3288-pwm";
 		reg = <0x0 0xff680020 0x0 0x10>;
+		interrupts = <GIC_SPI 76 IRQ_TYPE_LEVEL_HIGH>;
 		#pwm-cells = <3>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwm2_pin>;
@@ -705,6 +708,7 @@
 	pwm3: pwm@ff680030 {
 		compatible = "rockchip,rk3288-pwm";
 		reg = <0x0 0xff680030 0x0 0x10>;
+		interrupts = <GIC_SPI 77 IRQ_TYPE_LEVEL_HIGH>;
 		#pwm-cells = <3>;
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwm3_pin>;
-- 
2.20.1