linux-kernel - [PATCH RFC 3/6] dt-bindings: pwm: thead: Add T-HEAD TH1520 PWM controller

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Message-Id: <20250524-rust-next-pwm-working-fan-for-sending-v1-3-bdd2d5094ff7@samsung.com>
Date: Sat, 24 May 2025 23:14:57 +0200
From: Michal Wilczynski <m.wilczynski@...sung.com>
To: Uwe Kleine-König <ukleinek@...nel.org>,  Miguel Ojeda
	<ojeda@...nel.org>, Alex Gaynor <alex.gaynor@...il.com>,  Boqun Feng
	<boqun.feng@...il.com>, Gary Guo <gary@...yguo.net>, 
	Björn Roy Baron <bjorn3_gh@...tonmail.com>,  Benno Lossin
	<benno.lossin@...ton.me>,  Andreas Hindborg <a.hindborg@...nel.org>, Alice
	Ryhl <aliceryhl@...gle.com>,  Trevor Gross <tmgross@...ch.edu>, Danilo
	Krummrich <dakr@...nel.org>,  Michal Wilczynski <m.wilczynski@...sung.com>,
	Drew Fustini <drew@...7.com>,  Guo Ren <guoren@...nel.org>, Fu Wei
	<wefu@...hat.com>,  Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>,  Conor Dooley <conor+dt@...nel.org>,  Paul Walmsley
	<paul.walmsley@...ive.com>,  Palmer Dabbelt <palmer@...belt.com>, Albert Ou
	<aou@...s.berkeley.edu>,  Alexandre Ghiti <alex@...ti.fr>,  Marek Szyprowski
	<m.szyprowski@...sung.com>
Cc: linux-kernel@...r.kernel.org, linux-pwm@...r.kernel.org,
	rust-for-linux@...r.kernel.org, linux-riscv@...ts.infradead.org, 
	devicetree@...r.kernel.org
Subject: [PATCH RFC 3/6] dt-bindings: pwm: thead: Add T-HEAD TH1520 PWM
 controller

Add the Device Tree binding documentation for the T-HEAD
TH1520 SoC PWM controller.

Signed-off-by: Michal Wilczynski <m.wilczynski@...sung.com>
---
 .../devicetree/bindings/pwm/thead,th1520-pwm.yaml  | 48 ++++++++++++++++++++++
 MAINTAINERS                                        |  1 +
 2 files changed, 49 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml b/Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml
new file mode 100644
index 0000000000000000000000000000000000000000..855aec59ac53c430adc849271235686e87b10e6c
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml
@@ -0,0 +1,48 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/thead,th1520-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: T-HEAD TH1520 PWM controller
+
+maintainers:
+  - Michal Wilczynski <m.wilczynski@...sung.com>
+
+allOf:
+  - $ref: pwm.yaml#
+
+properties:
+  compatible:
+    const: thead,th1520-pwm
+
+  reg:
+    maxItems: 1
+
+  clocks:
+    items:
+      - description: SoC PWM clock
+
+  "#pwm-cells":
+    const: 3
+
+required:
+  - compatible
+  - reg
+  - clocks
+
+unevaluatedProperties: false
+
+examples:
+  - |
+    #include <dt-bindings/clock/thead,th1520-clk-ap.h>
+    soc {
+      #address-cells = <2>;
+      #size-cells = <2>;
+      pwm@...c01c000 {
+          compatible = "thead,th1520-pwm";
+          reg = <0xff 0xec01c000 0x0 0x4000>;
+          clocks = <&clk CLK_PWM>;
+          #pwm-cells = <3>;
+      };
+    };
diff --git a/MAINTAINERS b/MAINTAINERS
index 0cfac73aea65076c5ccb50a25ea686fb86b472b8..2ae758a14e8f5a1e7fab7d85831b571551a49ee9 100644
--- a/MAINTAINERS
+++ b/MAINTAINERS
@@ -20979,6 +20979,7 @@ F:	Documentation/devicetree/bindings/firmware/thead,th1520-aon.yaml
 F:	Documentation/devicetree/bindings/mailbox/thead,th1520-mbox.yaml
 F:	Documentation/devicetree/bindings/net/thead,th1520-gmac.yaml
 F:	Documentation/devicetree/bindings/pinctrl/thead,th1520-pinctrl.yaml
+F:	Documentation/devicetree/bindings/pwm/thead,th1520-pwm.yaml
 F:	arch/riscv/boot/dts/thead/
 F:	drivers/clk/thead/clk-th1520-ap.c
 F:	drivers/firmware/thead,th1520-aon.c

-- 
2.34.1