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Message-Id: <20240125-pxa-pwm-yaml-v3-1-10b0b0dc02bd@skole.hr>
Date: Thu, 25 Jan 2024 18:36:33 +0100
From: Duje Mihanović <duje.mihanovic@...le.hr>
To: Thierry Reding <thierry.reding@...il.com>,
Uwe Kleine-König <u.kleine-koenig@...gutronix.de>,
Rob Herring <robh+dt@...nel.org>,
Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
Conor Dooley <conor+dt@...nel.org>
Cc: linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
linux-kernel@...r.kernel.org,
Duje Mihanović <duje.mihanovic@...le.hr>
Subject: [PATCH RESEND v3] dt-bindings: pxa-pwm: Convert to YAML
Convert the PXA PWM binding file from TXT to YAML.
The original binding does not mention any clocks, but the PWM controller
will not probe without a clock.
Reviewed-by: Uwe Kleine-König <u.kleine-koenig@...gutronix.de>
Signed-off-by: Duje Mihanović <duje.mihanovic@...le.hr>
---
Changes in v3:
- Change id to marvell,pxa-pwm.yaml (forgot to do in v2)
- Link to v2: https://lore.kernel.org/r/20240106-pxa-pwm-yaml-v2-1-9578ff5f2d7f@skole.hr
Changes in v2:
- Rename to marvell,pxa-pwm.yaml
- Note addition of clock property
- Update trailers
- Link to v1: https://lore.kernel.org/r/20240105-pxa-pwm-yaml-v1-1-4ded9d00c38f@skole.hr
---
.../devicetree/bindings/pwm/marvell,pxa-pwm.yaml | 51 ++++++++++++++++++++++
Documentation/devicetree/bindings/pwm/pxa-pwm.txt | 30 -------------
2 files changed, 51 insertions(+), 30 deletions(-)
diff --git a/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
new file mode 100644
index 000000000000..ba6325575ea0
--- /dev/null
+++ b/Documentation/devicetree/bindings/pwm/marvell,pxa-pwm.yaml
@@ -0,0 +1,51 @@
+# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pwm/marvell,pxa-pwm.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Marvell PXA PWM
+
+maintainers:
+ - Duje Mihanović <duje.mihanovic@...le.hr>
+
+allOf:
+ - $ref: pwm.yaml#
+
+properties:
+ compatible:
+ enum:
+ - marvell,pxa250-pwm
+ - marvell,pxa270-pwm
+ - marvell,pxa168-pwm
+ - marvell,pxa910-pwm
+
+ reg:
+ # Length should be 0x10
+ maxItems: 1
+
+ "#pwm-cells":
+ # Used for specifying the period length in nanoseconds
+ const: 1
+
+ clocks:
+ maxItems: 1
+
+required:
+ - compatible
+ - reg
+ - "#pwm-cells"
+ - clocks
+
+additionalProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/clock/pxa-clock.h>
+
+ pwm0: pwm@...00000 {
+ compatible = "marvell,pxa250-pwm";
+ reg = <0x40b00000 0x10>;
+ #pwm-cells = <1>;
+ clocks = <&clks CLK_PWM0>;
+ };
diff --git a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt b/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
deleted file mode 100644
index 5ae9f1e3c338..000000000000
--- a/Documentation/devicetree/bindings/pwm/pxa-pwm.txt
+++ /dev/null
@@ -1,30 +0,0 @@
-Marvell PWM controller
-
-Required properties:
-- compatible: should be one or more of:
- - "marvell,pxa250-pwm"
- - "marvell,pxa270-pwm"
- - "marvell,pxa168-pwm"
- - "marvell,pxa910-pwm"
-- reg: Physical base address and length of the registers used by the PWM channel
- Note that one device instance must be created for each PWM that is used, so the
- length covers only the register window for one PWM output, not that of the
- entire PWM controller. Currently length is 0x10 for all supported devices.
-- #pwm-cells: Should be 1. This cell is used to specify the period in
- nanoseconds.
-
-Example PWM device node:
-
-pwm0: pwm@...00000 {
- compatible = "marvell,pxa250-pwm";
- reg = <0x40b00000 0x10>;
- #pwm-cells = <1>;
-};
-
-Example PWM client node:
-
-backlight {
- compatible = "pwm-backlight";
- pwms = <&pwm0 5000000>;
- ...
-}
---
base-commit: 610a9b8f49fbcf1100716370d3b5f6f884a2835a
change-id: 20240105-pxa-pwm-yaml-8dbb00dfe7c6
Best regards,
--
Duje Mihanović <duje.mihanovic@...le.hr>
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