| Message ID | 1435126625-9634-3-git-send-email-s.hauer@pengutronix.de |
|---|---|
| State | Superseded, archived |
| Headers | show |
On Wednesday, June 24, 2015 08:17:03 AM Sascha Hauer wrote: > This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs. > > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> > --- Applied to v4.2-next/soc -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
On Wed, Jun 24, 2015 at 2:17 PM, Sascha Hauer <s.hauer@pengutronix.de> wrote: > This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs. > > Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> > --- > .../devicetree/bindings/soc/mediatek/scpsys.txt | 41 ++++++++++++++++++++++ > 1 file changed, 41 insertions(+) > create mode 100644 Documentation/devicetree/bindings/soc/mediatek/scpsys.txt > > diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt > new file mode 100644 > index 0000000..c051114 > --- /dev/null > +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt > @@ -0,0 +1,41 @@ > +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.txt. It provides the power domains defined in > +include/dt-bindings/power/mt8173-power.h. > + > +Required properties: > +- compatible: Must be "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. > + The clocks needed "mm" and "mfg". These are the > + clocks which hardware needs to be enabled before > + enabling certain power domains. > + > +Example: > + > + scpsys: scpsys@10006000 { Perhaps it is too late, and/or too pedantic, but, since this node defines a PM domain provider as defined in [0], shouldn't its node have been the more generic: scpsys: power-controller@10006000 [0] /Documentation/devicetree/bindings/power/power_domain.txt > + #power-domain-cells = <1>; > + compatible = "mediatek,mt8173-scpsys"; > + reg = <0 0x10006000 0 0x1000>; > + infracfg = <&infracfg>; > + clocks = <&clk26m>, > + <&topckgen CLK_TOP_MM_SEL>; > + clock-names = "mfg", "mm"; > + }; > + > +Example consumer: > + > + afe: mt8173-afe-pcm@11220000 { > + compatible = "mediatek,mt8173-afe-pcm"; > + power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>; > + }; > -- > 2.1.4 > > -- > To unsubscribe from this list: send the line "unsubscribe linux-kernel" in > the body of a message to majordomo@vger.kernel.org > More majordomo info at http://vger.kernel.org/majordomo-info.html > Please read the FAQ at http://www.tux.org/lkml/ -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@vger.kernel.org More majordomo info at http://vger.kernel.org/majordomo-info.html
diff --git a/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt new file mode 100644 index 0000000..c051114 --- /dev/null +++ b/Documentation/devicetree/bindings/soc/mediatek/scpsys.txt @@ -0,0 +1,41 @@ +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.txt. It provides the power domains defined in +include/dt-bindings/power/mt8173-power.h. + +Required properties: +- compatible: Must be "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. + The clocks needed "mm" and "mfg". These are the + clocks which hardware needs to be enabled before + enabling certain power domains. + +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>; + clock-names = "mfg", "mm"; + }; + +Example consumer: + + afe: mt8173-afe-pcm@11220000 { + compatible = "mediatek,mt8173-afe-pcm"; + power-domains = <&scpsys MT8173_POWER_DOMAIN_AUDIO>; + };
This adds documentation for the MediaTek SCPSYS unit found in MT8173 SoCs. Signed-off-by: Sascha Hauer <s.hauer@pengutronix.de> --- .../devicetree/bindings/soc/mediatek/scpsys.txt | 41 ++++++++++++++++++++++ 1 file changed, 41 insertions(+) create mode 100644 Documentation/devicetree/bindings/soc/mediatek/scpsys.txt