92 lines
2.9 KiB
Diff
92 lines
2.9 KiB
Diff
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From patchwork Mon Mar 20 06:47:24 2017
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Content-Type: text/plain; charset="utf-8"
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MIME-Version: 1.0
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Content-Transfer-Encoding: 7bit
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Subject: [v6,1/4] dt-bindings: leds: Add document bindings for leds-mt6323
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From: sean.wang@mediatek.com
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X-Patchwork-Id: 9633073
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Message-Id: <1489992447-13007-2-git-send-email-sean.wang@mediatek.com>
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To: <rpurdie@rpsys.net>, <jacek.anaszewski@gmail.com>, <lee.jones@linaro.org>,
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<matthias.bgg@gmail.com>, <pavel@ucw.cz>, <robh+dt@kernel.org>,
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<mark.rutland@arm.com>
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Cc: devicetree@vger.kernel.org, keyhaede@gmail.com,
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Sean Wang <sean.wang@mediatek.com>, linux-kernel@vger.kernel.org,
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linux-mediatek@lists.infradead.org, linux-leds@vger.kernel.org,
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linux-arm-kernel@lists.infradead.org
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Date: Mon, 20 Mar 2017 14:47:24 +0800
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From: Sean Wang <sean.wang@mediatek.com>
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This patch adds documentation for devicetree bindings for LED support on
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MT6323 PMIC.
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Signed-off-by: Sean Wang <sean.wang@mediatek.com>
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---
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.../devicetree/bindings/leds/leds-mt6323.txt | 60 ++++++++++++++++++++++
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1 file changed, 60 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/leds/leds-mt6323.txt
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/leds/leds-mt6323.txt
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@@ -0,0 +1,60 @@
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+Device Tree Bindings for LED support on MT6323 PMIC
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+
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+MT6323 LED controller is subfunction provided by MT6323 PMIC, so the LED
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+controllers are defined as the subnode of the function node provided by MT6323
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+PMIC controller that is being defined as one kind of Muti-Function Device (MFD)
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+using shared bus called PMIC wrapper for each subfunction to access remote
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+MT6323 PMIC hardware.
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+
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+For MT6323 MFD bindings see:
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+Documentation/devicetree/bindings/mfd/mt6397.txt
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+For MediaTek PMIC wrapper bindings see:
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+Documentation/devicetree/bindings/soc/mediatek/pwrap.txt
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+
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+Required properties:
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+- compatible : Must be "mediatek,mt6323-led"
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+- address-cells : Must be 1
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+- size-cells : Must be 0
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+
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+Each led is represented as a child node of the mediatek,mt6323-led that
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+describes the initial behavior for each LED physically and currently only four
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+LED child nodes can be supported.
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+
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+Required properties for the LED child node:
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+- reg : LED channel number (0..3)
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+
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+Optional properties for the LED child node:
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+- label : See Documentation/devicetree/bindings/leds/common.txt
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+- linux,default-trigger : See Documentation/devicetree/bindings/leds/common.txt
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+- default-state: See Documentation/devicetree/bindings/leds/common.txt
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+
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+Example:
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+
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+ mt6323: pmic {
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+ compatible = "mediatek,mt6323";
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+
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+ ...
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+
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+ mt6323led: leds {
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+ compatible = "mediatek,mt6323-led";
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+ #address-cells = <1>;
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+ #size-cells = <0>;
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+
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+ led@0 {
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+ reg = <0>;
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+ label = "LED0";
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+ linux,default-trigger = "timer";
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+ default-state = "on";
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+ };
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+ led@1 {
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+ reg = <1>;
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+ label = "LED1";
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+ default-state = "off";
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+ };
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+ led@2 {
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+ reg = <2>;
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+ label = "LED2";
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+ default-state = "on";
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+ };
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+ };
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+ };
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