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> --- .../devicetree/bindings/interrupt-controller/arm,gic-v3.txt | 5 +++++ 1 file changed, 5 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..dfd1b9b838cd 100644 --- a/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt +++ b/Documentation/devicetree/bindings/interrupt-controller/arm,gic-v3.txt @@ -78,6 +78,11 @@ 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 loses power + on suspend to memory (via PSCI_SYSTEM_SUSPEND). Registers and data within + the ITS will be the same as before probe (PSCI FW does not restore state). + Any state stored in external memory is maintained (such as collection + tables stored in external memory). The main GIC node must contain the appropriate #address-cells, #size-cells and ranges properties for the reg property of all ITS -- 2.16.2.395.g2e18187dfd-goog
