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52 lines
1.7 KiB
52 lines
1.7 KiB
9 years ago
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From 06a1fd8a198771abc7c5badcf43a49a715ba4c76 Mon Sep 17 00:00:00 2001
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From: Sascha Hauer <s.hauer@pengutronix.de>
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Date: Tue, 9 Jun 2015 10:47:00 +0200
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Subject: [PATCH 07/76] dt-bindings: soc: Add documentation for the MediaTek
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SCPSYS unit
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This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs.
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Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de>
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---
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.../devicetree/bindings/soc/mediatek/scpsys.txt | 34 ++++++++++++++++++++
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1 file changed, 34 insertions(+)
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create mode 100644 Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
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--- /dev/null
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+++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
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@@ -0,0 +1,34 @@
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+MediaTek SCPSYS
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+===============
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+
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+The System Control Processor System (SCPSYS) has several power management
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+related tasks in the system. The tasks include thermal measurement, dynamic
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+voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control.
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+The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power
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+domain control.
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+
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+The driver implements the Generic PM domain bindings described in
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+power/power_domain.txt. It provides the power domains defined in
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+include/dt-bindings/power/mt8173-power.h.
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+
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+Required properties:
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+- compatible: Must be "mediatek,mt8173-scpsys"
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+- #power-domain-cells: Must be 1
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+- reg: Address range of the SCPSYS unit
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+- infracfg: must contain a phandle to the infracfg controller
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+
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+Example:
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+
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+ scpsys: scpsys@10006000 {
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+ #power-domain-cells = <1>;
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+ compatible = "mediatek,mt8173-scpsys";
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+ reg = <0 0x10006000 0 0x1000>;
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+ infracfg = <&infracfg>;
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+ };
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+
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+Example consumer:
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+
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+ afe: mt8173-afe-pcm@11220000 {
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+ compatible = "mediatek,mt8173-afe-pcm";
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+ power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>;
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+ };
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