On Fri, Dec 04, 2015 at 02:57:13PM +0000, Jon Hunter wrote: > Add power-domain binding documentation for the NVIDIA PMC driver in > order to support generic power-domains. > > Signed-off-by: Jon Hunter <jonathanh@xxxxxxxxxx> > > --- > > Please note that I have been debating whether I add this > "nvidia,powergate-clock-disable" property or just leave the clocks > disabled by default. Some downstream kernels leave the clocks enabled > for the audio power-domain because the clocks required for powering up > the power-domain are needed by all modules within the power-domain. > However are the same time there are other power-domains that may need > to be on, but not always clocked and so having the ability to specify if > the clocks should be disabled seems useful. However, I can also remove > this and just have the appropriate devices turn on the clocks as well. > --- > .../bindings/arm/tegra/nvidia,tegra20-pmc.txt | 61 ++++++++++++++++++++++ > 1 file changed, 61 insertions(+) > > diff --git a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt > index 838e1a69ec0a..8e4641db51a9 100644 > --- a/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt > +++ b/Documentation/devicetree/bindings/arm/tegra/nvidia,tegra20-pmc.txt > @@ -1,5 +1,7 @@ > NVIDIA Tegra Power Management Controller (PMC) > > +== Power Management Controller Node == > + > The PMC block interacts with an external Power Management Unit. The PMC > mostly controls the entry and exit of the system from different sleep > modes. It provides power-gating controllers for SoC and CPU power-islands. > @@ -69,6 +71,10 @@ Optional properties for hardware-triggered thermal reset (inside 'i2c-thermtrip' > Defaults to 0. Valid values are described in section 12.5.2 > "Pinmux Support" of the Tegra4 Technical Reference Manual. > > +Optional nodes: > +- pm-domains : This node contains a hierarchy of PM domain nodes, which should > + match the power-domains on the Tegra SoC. > + pm-domains is a linuxism. Perhaps name this after what Tegra calls this: "powergates"? Thierry
Attachment:
signature.asc
Description: PGP signature
