[PATCH 1/9] arm64: dts: google: Add Laguna CPM mailbox array

[Brian Norris]

These are the request and response channels used for communicating with
the Central Power Manager (CPM) found on the Google Tensor SoC known as
Laguna.

Signed-off-by: Brian Norris <briannorris at chromium.org>
---
Based on WIP bindings from:

  https://lore.kernel.org/all/20261023165211.v2.3.Ia186a29119b4b5c409815b755e0c2c3965b0495f@changeid/
  [PATCH v2 3/4] dt-bindings: mailbox: goog-mba: Add goog-mba mailbox bindings

which is part of this series:

  https://lore.kernel.org/all/20261023235408.3063350-1-dianders@chromium.org/
  [PATCH v2 0/4] mailbox: Improve the mbox core then introduce the goog-mba driver

The binding is still under review, but I include this anyway to help
prove out a working solution. This patch should not be accepted until
the binding is settled.

 arch/arm64/boot/dts/google/lga.dtsi | 30 +++++++++++++++++++++++++++++
 1 file changed, 30 insertions(+)

diff --git a/arch/arm64/boot/dts/google/lga.dtsi b/arch/arm64/boot/dts/google/lga.dtsi
index 3e670e524c4c..6ceb9ea6a100 100644
--- a/arch/arm64/boot/dts/google/lga.dtsi
+++ b/arch/arm64/boot/dts/google/lga.dtsi
@@ -365,6 +365,36 @@ soc: soc at 0 {
 		#address-cells = <2>;
 		#size-cells = <2>;
 
+		cpm_ap_ns_mba: mailbox-array at 5240000 {
+			compatible = "google,lga-mailbox-array";
+			reg = <0x0 0x05240000 0x0 0x00010000>,
+			      <0x0 0x05250000 0x0 0x00010000>;
+			ranges = <0x0 0x0 0x05260000 0x00020000>;
+
+			#address-cells = <1>;
+			#size-cells = <1>;
+
+			cpm_ap_ns_req_mba: mailbox at 0 {
+				reg = <0x00000 0x1000>;
+				interrupts = <GIC_SPI 250 IRQ_TYPE_LEVEL_HIGH 0>;
+
+				#mbox-cells = <0>;
+
+				google,tx-payload-words = <4>;
+				google,mba-queue-mode;
+			};
+
+			cpm_ap_ns_resp_mba: mailbox at 1000 {
+				reg = <0x01000 0x1000>;
+				interrupts = <GIC_SPI 251 IRQ_TYPE_LEVEL_HIGH 0>;
+
+				#mbox-cells = <0>;
+
+				google,rx-payload-words = <4>;
+				google,mba-queue-mode;
+			};
+		};
+
 		gic: interrupt-controller at 5880000 {
 			compatible = "arm,gic-v3";
 			reg = <0x0 0x05880000 0x0 0x10000>,
-- 
2.56.0.307.g5fe7bd680c-goog