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Subject[PATCH v10 07/12] dt-bindings: pwm: pwm-mediatek: add a property "num-pwms"
Date
From: Ryder Lee <ryder.lee@mediatek.com>

This adds a property "num-pwms" in example so that we could
specify the number of PWM channels via device tree.

Signed-off-by: Ryder Lee <ryder.lee@mediatek.com>
Signed-off-by: Sam Shih <sam.shih@mediatek.com>
Reviewed-by: Matthias Brugger <matthias.bgg@gmail.com>
Acked-by: Uwe Kleine-König <u.kleine-koenig@pengutronix.de>
---
Changes since v10:
1. Follow reviewers's comments:
- derive the number of PWMs from the specific compatible string
2. Add mt7629 pwm description
3. Add mt7628 fixed-clock description

Changes since v6:
Follow reviewers's comments:
- The subject should indicate this is for Mediatek

Changes since v5:
- Add an Acked-by tag
- This file is original v4 patch 5/10
(https://patchwork.kernel.org/patch/11102577/)

---
Documentation/devicetree/bindings/pwm/pwm-mediatek.txt | 10 +++++++---
1 file changed, 7 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
index 991728cb46cb..975d7871830d 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
@@ -9,17 +9,20 @@ Required properties:
- reg: physical base address and length of the controller's registers.
- #pwm-cells: must be 2. See pwm.txt in this directory for a description of
the cell format.
- - clocks: phandle and clock specifier of the PWM reference clock.
- - clock-names: must contain the following, except for MT7628 which
- has no clocks
+ - clocks: One phandle and clock specifier for each entry in the "clock-names"
+ property, Use fixed-clock as dummy clocks for mt7628
+ - clock-names: must contain the following
- "top": the top clock generator
- "main": clock used by the PWM core
- "pwm1-8": the eight per PWM clocks for mt2712
- "pwm1-6": the six per PWM clocks for mt7622
- "pwm1-5": the five per PWM clocks for mt7623
+ - "pwm1-4": the four per PWM clocks for mt7628
+ - "pwm1": the PWM1 clock for mt7629
- pinctrl-names: Must contain a "default" entry.
- pinctrl-0: One property must exist for each entry in pinctrl-names.
See pinctrl/pinctrl-bindings.txt for details of the property values.
+ - num-pwms: the number of PWM channels.

Example:
pwm0: pwm@11006000 {
@@ -37,4 +40,5 @@ Example:
"pwm3", "pwm4", "pwm5";
pinctrl-names = "default";
pinctrl-0 = <&pwm0_pins>;
+ num-pwms = <5>;
};
--
2.17.1
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