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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 v5 08/13] dt-bindings: pwm: update bindings for MT7628 SoC
Date:   Thu, 22 Aug 2019 14:58:38 +0800
Message-ID: <1566457123-20791-9-git-send-email-sam.shih@mediatek.com>
In-Reply-To: <1566457123-20791-1-git-send-email-sam.shih@mediatek.com>
References: <1566457123-20791-1-git-send-email-sam.shih@mediatek.com>
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This updates bindings for MT7628 pwm controller.

Signed-off-by: Sam Shih <sam.shih@mediatek.com>
---
 Documentation/devicetree/bindings/pwm/pwm-mediatek.txt | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
index ea95b490a913..93980e3da261 100644
--- a/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
+++ b/Documentation/devicetree/bindings/pwm/pwm-mediatek.txt
@@ -21,6 +21,10 @@ Required properties:
    See pinctrl/pinctrl-bindings.txt for details of the property values.
  - num-pwms: the number of PWM channels.
+
+ Optional properties:
+ - clock-frequency: fix clock frequency, this is only used in MT7628 SoC
+                    for period calculation. This SoC has no complex clock tree.
 
 Example:
 	pwm0: pwm@11006000 {
 		compatible = "mediatek,mt7623-pwm";
-- 
2.17.1