[PATCH 8/9] arm64: dts: google: Add Laguna CPM node

[Brian Norris]

The Central Power Manager (CPM) is a co-processor on the Google Tensor
SoCs, as used on Pixel phones. CPM supports power-management and a
number of other features.

The Application Processor communicates with CPM over a pair of mailbox
channels. CPM provides clock, power-domain, reset, and interrupt
services, so we include the appropriate cell-definitions for those.

Because this also adds clock, reset, and power-domain support, we add
them to the UART node at the same time.

Signed-off-by: Brian Norris <briannorris at chromium.org>
---

 arch/arm64/boot/dts/google/lga.dtsi | 20 ++++++++++++++++++++
 1 file changed, 20 insertions(+)

diff --git a/arch/arm64/boot/dts/google/lga.dtsi b/arch/arm64/boot/dts/google/lga.dtsi
index 6ceb9ea6a100..83b2361c5f00 100644
--- a/arch/arm64/boot/dts/google/lga.dtsi
+++ b/arch/arm64/boot/dts/google/lga.dtsi
@@ -7,8 +7,13 @@
 
 /dts-v1/;
 
+#include <dt-bindings/clock/google,lga-cpm.h>
 #include <dt-bindings/interrupt-controller/arm-gic.h>
+#include <dt-bindings/interrupt-controller/irq-cpm-google.h>
 #include <dt-bindings/interrupt-controller/irq.h>
+#include <dt-bindings/power/google,lga-cpm.h>
+#include <dt-bindings/reset/google,lga-cpm-reset.h>
+#include <dt-bindings/soc/google,lga-lpcm.h>
 
 / {
 	#address-cells = <2>;
@@ -356,6 +361,16 @@ abl at be000000 {
 		};
 	};
 
+	cpm: cpm {
+		compatible = "google,lga-cpm";
+		#clock-cells = <2>;
+		#power-domain-cells = <1>;
+		#reset-cells = <2>;
+		interrupt-controller;
+		#interrupt-cells = <1>;
+		mboxes = <&cpm_ap_ns_req_mba>, <&cpm_ap_ns_resp_mba>;
+	};
+
 	soc: soc at 0 {
 		compatible = "simple-bus";
 		ranges = <0x0 0x0 0x0 0x0 0x10 0x0>;
@@ -423,9 +438,14 @@ lsion_cli16_uart: serial at db62000 {
 			reg = <0x0 0x0db62000 0x0 0x100>;
 
 			clock-frequency = <200000000>;
+			clocks = <&cpm LGA_LPCM_LSIO_N LSION_CLI16_UART_CLK>,
+				 <&cpm LGA_LPCM_LSIO_N LSION_CLI16_CFG_CLK>;
+			clock-names = "baudclk", "apb_pclk";
 			interrupts = <GIC_SPI 688 IRQ_TYPE_LEVEL_HIGH 0>;
+			power-domains = <&cpm LGA_PD_LSIO_N_CLI_GPIO>;
 			reg-io-width = <4>;
 			reg-shift = <2>;
+			resets = <&cpm LGA_LPCM_LSIO_N LSION_CLI16_UART_IC_CFG_RST>;
 
 			status = "disabled";
 		};
-- 
2.56.0.307.g5fe7bd680c-goog