[PATCH v7 2/3] DT/arm,gic-v3-its: add reset-on-suspend property
From: Derek Basehore <hidden>
Date: 2018-03-01 05:48:38
Also in:
linux-pm, lkml
Subsystem:
arm generic interrupt controller drivers, irqchip drivers, open firmware and flattened device tree bindings, the rest · Maintainers:
Marc Zyngier, Thomas Gleixner, Rob Herring, Krzysztof Kozlowski, Conor Dooley, Linus Torvalds
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 <redacted> --- .../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
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2.16.2.395.g2e18187dfd-goog