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From:   Sam Shih <sam.shih@mediatek.com>
To:     Rob Herring <robh+dt@kernel.org>,
        Mark Rutland <mark.rutland@arm.com>,
        Matthias Brugger <matthias.bgg@gmail.com>,
        Thierry Reding <thierry.reding@gmail.com>
CC:     Ryder Lee <ryder.lee@mediatek.com>,
        John Crispin <john@phrozen.org>, <linux-pwm@vger.kernel.org>,
        <devicetree@vger.kernel.org>, <linux-kernel@vger.kernel.org>,
        <linux-mediatek@lists.infradead.org>,
        Sam Shih <sam.shih@mediatek.com>
Subject: [PATCH v2 4/10] dt-bindings: pwm: add a property "num-pwms"
Date:   Wed, 14 Aug 2019 18:43:34 +0800
Message-ID: <4107497fa8564032cac49e70680a9aa7bbb312eb.1548313019.git.ryder.lee@mediatek.com>
In-Reply-To: <621e49c01b943edb6ddac9182f34719eb0727f01.1548313019.git.ryder.lee@mediatek.com>
References: <621e49c01b943edb6ddac9182f34719eb0727f01.1548313019.git.ryder.lee@mediatek.com>
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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>
---
Changes since v2:
- use num-pwms instead of mediatek,num-pwms.
- modify the description of clocks to make it simple.

Changes since v1:
- add a Reviewed-by tag.
---
 Documentation/devicetree/bindings/pwm/pwm-mediatek.txt | 7 ++++---
 1 file changed, 4 insertions(+), 3 deletions(-)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
index 991728c..ea95b49 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
@@ -14,12 +14,12 @@ Required properties:
                 has no clocks
    - "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-N": the PWM clocks for each channel
+   where N starting from 1 to the maximum number of PWM channels
  - 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 +37,5 @@ Example:
 			      "pwm3", "pwm4", "pwm5";
 		pinctrl-names = "default";
 		pinctrl-0 = <&pwm0_pins>;
+		num-pwms = <5>;
 	};
-- 
1.9.1