linux-kernel - [PATCH 1/2 v3] dt-bindings: pwm: Add AXI PWM generator

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Message-ID: <20240131214042.1335251-2-tgamblin@baylibre.com>
Date: Wed, 31 Jan 2024 16:40:40 -0500
From: Trevor Gamblin <tgamblin@...libre.com>
To: linux-pwm@...r.kernel.org
Cc: linux-kernel@...r.kernel.org,
	u.kleine-koenig@...gutronix.de,
	michael.hennerich@...log.com,
	nuno.sa@...log.com,
	devicetree@...r.kernel.org,
	robh+dt@...nel.org,
	krzysztof.kozlowski+dt@...aro.org,
	conor+dt@...nel.org,
	Drew Fustini <dfustini@...libre.com>,
	Trevor Gamblin <tgamblin@...libre.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Subject: [PATCH 1/2 v3] dt-bindings: pwm: Add AXI PWM generator

From: Drew Fustini <dfustini@...libre.com>

Add Analog Devices AXI PWM generator.

Link: https://wiki.analog.com/resources/fpga/docs/axi_pwm_gen
Signed-off-by: Drew Fustini <dfustini@...libre.com>
Co-developed-by: Trevor Gamblin <tgamblin@...libre.com>
Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
Signed-off-by: Trevor Gamblin <tgamblin@...libre.com>

---
v3 changes: None (rebased, added maintainer's previous Reviewed-by)

v2 changes:
* Address feedback for driver and device tree in v1:
  * Relocate "unevaluatedProperties" in device tree binding
  * Remove redundant "bindings for" in description

---
 .../bindings/pwm/adi,axi-pwmgen.yaml          | 48 +++++++++++++++++++
 MAINTAINERS                                   |  8 ++++
 2 files changed, 56 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml

diff --git a/Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml b/Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml
new file mode 100644
index 000000000000..63461920a362
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/adi,axi-pwmgen.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Analog Devices AXI PWM generator
+
+maintainers:
+  - Michael Hennerich <Michael.Hennerich@...log.com>
+  - Nuno Sá <nuno.sa@...log.com>
+
+description:
+  The Analog Devices AXI PWM generator can generate PWM signals
+  with variable pulse width and period.
+
+  https://wiki.analog.com/resources/fpga/docs/axi_pwm_gen
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: adi,axi-pwmgen-1.00.a
+
+  reg:
+    maxItems: 1
+
+  "#pwm-cells":
+    const: 2
+
+  clocks:
+    maxItems: 1
+
+required:
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    pwm@...00000 {
+       compatible = "adi,axi-pwmgen-1.00.a";
+       reg = <0x44b00000 0x1000>;
+       clocks = <&spi_clk>;
+       #pwm-cells = <2>;
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 8d1052fa6a69..8a4ed5545680 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -3431,6 +3431,14 @@ W:	https://ez.analog.com/linux-software-drivers
 F:	Documentation/devicetree/bindings/spi/adi,axi-spi-engine.yaml
 F:	drivers/spi/spi-axi-spi-engine.c
 
+AXI PWM GENERATOR
+M:	Michael Hennerich <michael.hennerich@...log.com>
+M:	Nuno Sá <nuno.sa@...log.com>
+L:	linux-pwm@...r.kernel.org
+S:	Supported
+W:	https://ez.analog.com/linux-software-drivers
+F:	Documentation/devicetree/bindings/pwm/adi,axi-pwmgen.yaml
+
 AXXIA I2C CONTROLLER
 M:	Krzysztof Adamski <krzysztof.adamski@...ia.com>
 L:	linux-i2c@...r.kernel.org
-- 
2.43.0