linux-kernel - [PATCH v3 1/2] dt-bindings: pwm: add support for MC33XS2410

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Message-Id: <20240515112034.298116-2-dima.fedrau@gmail.com>
Date: Wed, 15 May 2024 13:20:33 +0200
From: Dimitri Fedrau <dima.fedrau@...il.com>
To: 
Cc: Dimitri Fedrau <dima.fedrau@...il.com>,
	Uwe Kleine-König <ukleinek@...nel.org>,
	Rob Herring <robh+dt@...nel.org>,
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
	Conor Dooley <conor+dt@...nel.org>,
	linux-pwm@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH v3 1/2] dt-bindings: pwm: add support for MC33XS2410

Adding documentation for NXPs MC33XS2410 high side switch.

Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Dimitri Fedrau <dima.fedrau@...il.com>
---
 .../bindings/pwm/nxp,mc33xs2410.yaml          | 118 ++++++++++++++++++
 1 file changed, 118 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/nxp,mc33xs2410.yaml

diff --git a/Documentation/devicetree/bindings/pwm/nxp,mc33xs2410.yaml b/Documentation/devicetree/bindings/pwm/nxp,mc33xs2410.yaml
new file mode 100644
index 000000000000..1729fe5c3dfb
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/nxp,mc33xs2410.yaml
@@ -0,0 +1,118 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/nxp,mc33xs2410.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: High-side switch MC33XS2410
+
+maintainers:
+  - Dimitri Fedrau <dima.fedrau@...il.com>
+
+allOf:
+  - $ref: pwm.yaml#
+  - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+  compatible:
+    const: nxp,mc33xs2410
+
+  reg:
+    maxItems: 1
+
+  spi-max-frequency:
+    maximum: 10000000
+
+  spi-cpha: true
+
+  spi-cs-setup-delay-ns:
+    minimum: 100
+    default: 100
+
+  spi-cs-hold-delay-ns:
+    minimum: 10
+    default: 10
+
+  spi-cs-inactive-delay-ns:
+    minimum: 300
+    default: 300
+
+  reset-gpios:
+    description:
+      GPIO connected to the active low reset pin.
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 3
+
+  pwm-names:
+    items:
+      - const: di0
+      - const: di1
+      - const: di2
+      - const: di3
+
+  pwms:
+    description:
+      Direct inputs(di0-3) are used to directly turn-on or turn-off the
+      outputs.
+    maxItems: 4
+
+  interrupts:
+    maxItems: 1
+
+  clocks:
+    description:
+      The external clock can be used if the internal clock doesn't meet
+      timing requirements over temperature and voltage operating range.
+    maxItems: 1
+
+  vdd-supply:
+    description:
+      Logic supply voltage
+
+  vspi-supply:
+    description:
+      Supply voltage for SPI
+
+  vpwr-supply:
+    description:
+      Power switch supply
+
+required:
+  - compatible
+  - reg
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/gpio/gpio.h>
+    #include <dt-bindings/interrupt-controller/irq.h>
+    spi {
+        #address-cells = <1>;
+        #size-cells = <0>;
+
+       pwm@0 {
+           compatible = "nxp,mc33xs2410";
+           reg = <0x0>;
+           spi-max-frequency = <4000000>;
+           spi-cpha;
+           spi-cs-setup-delay-ns = <100>;
+           spi-cs-hold-delay-ns = <10>;
+           spi-cs-inactive-delay-ns = <300>;
+           reset-gpios = <&gpio3 22 GPIO_ACTIVE_LOW>;
+           #pwm-cells = <3>;
+           pwm-names = "di0", "di1", "di2", "di3";
+           pwms = <&pwm0 0 1000000>,
+                  <&pwm1 0 1000000>,
+                  <&pwm2 0 1000000>,
+                  <&pwm3 0 1000000>;
+           interrupt-parent = <&gpio0>;
+           interrupts = <31 IRQ_TYPE_LEVEL_LOW>;
+           clocks = <&clk_ext_fixed>;
+           vdd-supply = <&reg_3v3>;
+           vspi-supply = <&reg_3v3>;
+           vpwr-supply = <&reg_24v0>;
+       };
+    };
-- 
2.39.2