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Subject[PATCH v7 2/3] DT/arm,gic-v3-its: add reset-on-suspend property
Date
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 <dbasehore@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
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