On Wed, Feb 07, 2018 at 06:36:47PM -0800, Derek Basehore wrote: > This adds documentation for the new reset-on-suspend property. This > property enables saving and restoring the ITS for when it loses state > in system suspend. > > Signed-off-by: Derek Basehore <dbaseh...@chromium.org> > --- > Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt | 3 +++ > 1 file changed, 3 insertions(+) > > diff --git > a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > index 0a57f2f4167d..a470147d4f14 100644 > --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt > @@ -78,6 +78,9 @@ These nodes must have the following properties: > Optional: > - socionext,synquacer-pre-its: (u32, u32) tuple describing the untranslated > address and size of the pre-ITS window. > +- reset-on-suspend: Boolean property. Indicates that the ITS state is > + reset on suspend. The state is then saved on suspend and restored on > + resume.
The latter sentence reads like a description of SW policy, rather than a description of what the HW does. I don't think that should be here (though it might be worth noting the FW will not restore state). Which state is lost? Is "ITS state" a well-defined term? By suspend do you mean a PSCI_SYSTEM_SUSPEND, or potentially other cases? Thanks, Mark.
