linux-kernel - [PATCH 2/3] arm64: dts: ti: k3-j784s4-mcu: Add MCU domain R5F cluster node

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Date:   Wed, 29 Mar 2023 04:36:26 -0500
From:   Hari Nagalla <hnagalla@...com>
To:     <nm@...com>, <vigneshr@...com>
CC:     <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: [PATCH 2/3] arm64: dts: ti: k3-j784s4-mcu: Add MCU domain R5F cluster node

The J784S4 SoCs have 4 dual-core Arm Cortex-R5F processor (R5FSS)
subsystems/clusters. One R5F cluster (MCU_R5FSS0) is present within
the MCU domain (MCU_R5FSS0), and the remaining three clusters are
present in the MAIN domain (MAIN_R5FSS0, MAIN_R5FSS1 & MAIN_R5FSS2).
The functionality of the R5FSS is same as the R5FSS functionality on
earlier K3 platform devices J721S2. Each of the R5FSS can be configured
at boot time to be either run in a LockStep mode or in an Asymmetric
Multi Processing (AMP) fashion in Split-mode.

Signed-off-by: Hari Nagalla <hnagalla@...com>
---
 .../boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi     | 42 +++++++++++++++++++
 1 file changed, 42 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
index 64bd3dee14aa..e290e0925bc9 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-mcu-wakeup.dtsi
@@ -309,4 +309,46 @@
 			ti,cpts-periodic-outputs = <2>;
 		};
 	};
+
+	mcu_r5fss0: r5fss@...00000 {
+		compatible = "ti,j721s2-r5fss";
+		ti,cluster-mode = <1>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x41000000 0x00 0x41000000 0x20000>,
+			 <0x41400000 0x00 0x41400000 0x20000>;
+		power-domains = <&k3_pds 345 TI_SCI_PD_EXCLUSIVE>;
+
+		mcu_r5fss0_core0: r5f@...00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x41000000 0x00010000>,
+			      <0x41010000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <346>;
+			ti,sci-proc-ids = <0x01 0xff>;
+			resets = <&k3_reset 346 1>;
+			firmware-name = "j784s4-mcu-r5f0_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+			status = "disabled";
+		};
+
+		mcu_r5fss0_core1: r5f@...00000 {
+			compatible = "ti,j721s2-r5f";
+			reg = <0x41400000 0x00010000>,
+			      <0x41410000 0x00010000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&sms>;
+			ti,sci-dev-id = <347>;
+			ti,sci-proc-ids = <0x02 0xff>;
+			resets = <&k3_reset 347 1>;
+			firmware-name = "j784s4-mcu-r5f0_1-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+			status = "disabled";
+		};
+	};
 };
-- 
2.17.1