summaryrefslogtreecommitdiffstats
path: root/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
diff options
context:
space:
mode:
authorDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
committerDaniel Baumann <daniel.baumann@progress-linux.org>2024-04-27 10:05:51 +0000
commit5d1646d90e1f2cceb9f0828f4b28318cd0ec7744 (patch)
treea94efe259b9009378be6d90eb30d2b019d95c194 /Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
parentInitial commit. (diff)
downloadlinux-upstream.tar.xz
linux-upstream.zip
Adding upstream version 5.10.209.upstream/5.10.209upstream
Signed-off-by: Daniel Baumann <daniel.baumann@progress-linux.org>
Diffstat (limited to '')
-rw-r--r--Documentation/devicetree/bindings/soc/mediatek/scpsys.txt78
1 files changed, 78 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
new file mode 100644
index 000000000..2bc367793
--- /dev/null
+++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt
@@ -0,0 +1,78 @@
+MediaTek SCPSYS
+===============
+
+The System Control Processor System (SCPSYS) has several power management
+related tasks in the system. The tasks include thermal measurement, dynamic
+voltage frequency scaling (DVFS), interrupt filter and lowlevel sleep control.
+The System Power Manager (SPM) inside the SCPSYS is for the MTCMOS power
+domain control.
+
+The driver implements the Generic PM domain bindings described in
+power/power-domain.yaml. It provides the power domains defined in
+- include/dt-bindings/power/mt8173-power.h
+- include/dt-bindings/power/mt6797-power.h
+- include/dt-bindings/power/mt6765-power.h
+- include/dt-bindings/power/mt2701-power.h
+- include/dt-bindings/power/mt2712-power.h
+- include/dt-bindings/power/mt7622-power.h
+
+Required properties:
+- compatible: Should be one of:
+ - "mediatek,mt2701-scpsys"
+ - "mediatek,mt2712-scpsys"
+ - "mediatek,mt6765-scpsys"
+ - "mediatek,mt6797-scpsys"
+ - "mediatek,mt7622-scpsys"
+ - "mediatek,mt7623-scpsys", "mediatek,mt2701-scpsys": For MT7623 SoC
+ - "mediatek,mt7623a-scpsys": For MT7623A SoC
+ - "mediatek,mt7629-scpsys", "mediatek,mt7622-scpsys": For MT7629 SoC
+ - "mediatek,mt8173-scpsys"
+- #power-domain-cells: Must be 1
+- reg: Address range of the SCPSYS unit
+- infracfg: must contain a phandle to the infracfg controller
+- clock, clock-names: clocks according to the common clock binding.
+ These are clocks which hardware needs to be
+ enabled before enabling certain power domains.
+ Required clocks for MT2701 or MT7623: "mm", "mfg", "ethif"
+ Required clocks for MT2712: "mm", "mfg", "venc", "jpgdec", "audio", "vdec"
+ Required clocks for MT6765: MUX: "mm", "mfg"
+ CG: "mm-0", "mm-1", "mm-2", "mm-3", "isp-0",
+ "isp-1", "cam-0", "cam-1", "cam-2",
+ "cam-3","cam-4"
+ Required clocks for MT6797: "mm", "mfg", "vdec"
+ Required clocks for MT7622 or MT7629: "hif_sel"
+ Required clocks for MT7623A: "ethif"
+ Required clocks for MT8173: "mm", "mfg", "venc", "venc_lt"
+
+Optional properties:
+- vdec-supply: Power supply for the vdec power domain
+- venc-supply: Power supply for the venc power domain
+- isp-supply: Power supply for the isp power domain
+- mm-supply: Power supply for the mm power domain
+- venc_lt-supply: Power supply for the venc_lt power domain
+- audio-supply: Power supply for the audio power domain
+- usb-supply: Power supply for the usb power domain
+- mfg_async-supply: Power supply for the mfg_async power domain
+- mfg_2d-supply: Power supply for the mfg_2d power domain
+- mfg-supply: Power supply for the mfg power domain
+
+Example:
+
+ scpsys: scpsys@10006000 {
+ #power-domain-cells = <1>;
+ compatible = "mediatek,mt8173-scpsys";
+ reg = <0 0x10006000 0 0x1000>;
+ infracfg = <&infracfg>;
+ clocks = <&clk26m>,
+ <&topckgen CLK_TOP_MM_SEL>;
+ <&topckgen CLK_TOP_VENC_SEL>,
+ <&topckgen CLK_TOP_VENC_LT_SEL>;
+ clock-names = "mfg", "mm", "venc", "venc_lt";
+ };
+
+Example consumer:
+
+ afe: mt8173-afe-pcm@11220000 {
+ compatible = "mediatek,mt8173-afe-pcm";
+ power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>;
+ };