linux-kernel - [PATCH 1/3] arm64: dts: ti: Add R5F and C7x remote processor nodes

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Date: Fri, 7 Jun 2024 14:34:31 +0530
From: Beleswar Padhi <b-padhi@...com>
To: <nm@...com>, <vigneshr@...com>
CC: <kristo@...nel.org>, <robh@...nel.org>, <krzk+dt@...nel.org>,
        <conor+dt@...nel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <vaishnav.a@...com>, <j-choudhary@...com>, <u-kumar1@...com>
Subject: [PATCH 1/3] arm64: dts: ti: Add R5F and C7x remote processor nodes

From: Apurva Nandan <a-nandan@...com>

The K3 J722S SoCs have one single-core Arm Cortex-R5F processor in each
of the WAKEUP, MCU and MAIN voltage domain, and two C71x DSP subsystems
in MAIN voltage domain. Add the DT nodes to support Inter-Processor
Communication.

Signed-off-by: Apurva Nandan <a-nandan@...com>
Signed-off-by: Beleswar Padhi <b-padhi@...com>
---
 arch/arm64/boot/dts/ti/k3-j722s.dtsi | 63 ++++++++++++++++++++++++++++
 1 file changed, 63 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s.dtsi b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
index c75744edb1433..a894a132f1667 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j722s.dtsi
@@ -87,3 +87,66 @@ &oc_sram {
 	reg = <0x00 0x70000000 0x00 0x40000>;
 	ranges = <0x00 0x00 0x70000000 0x40000>;
 };
+
+&cbass_main {
+	main_r5fss0: r5fss@...00000 {
+		compatible = "ti,am62-r5fss";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x78400000 0x00 0x78400000 0x8000>,
+			 <0x78500000 0x00 0x78500000 0x8000>;
+		power-domains = <&k3_pds 261 TI_SCI_PD_EXCLUSIVE>;
+		status = "disabled";
+
+		main_r5fss0_core0: r5f@...00000 {
+			compatible = "ti,am62-r5f";
+			reg = <0x78400000 0x00008000>,
+			      <0x78500000 0x00008000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&dmsc>;
+			ti,sci-dev-id = <262>;
+			ti,sci-proc-ids = <0x04 0xff>;
+			resets = <&k3_reset 262 1>;
+			firmware-name = "j722s-main-r5f0_0-fw";
+			ti,atcm-enable = <1>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <1>;
+		};
+	};
+
+	c7x_0: dsp@...00000 {
+		compatible = "ti,am62a-c7xv-dsp";
+		reg = <0x00 0x7e000000 0x00 0x00200000>;
+		reg-names = "l2sram";
+		ti,sci = <&dmsc>;
+		ti,sci-dev-id = <208>;
+		ti,sci-proc-ids = <0x30 0xff>;
+		resets = <&k3_reset 208 1>;
+		firmware-name = "j722s-c71_0-fw";
+		status = "disabled";
+	};
+
+	c7x_1: dsp@...00000 {
+		compatible = "ti,am62a-c7xv-dsp";
+		reg = <0x00 0x7e200000 0x00 0x00200000>;
+		reg-names = "l2sram";
+		ti,sci = <&dmsc>;
+		ti,sci-dev-id = <268>;
+		ti,sci-proc-ids = <0x31 0xff>;
+		resets = <&k3_reset 268 1>;
+		firmware-name = "j722s-c71_1-fw";
+		status = "disabled";
+	};
+};
+
+/* MCU domain overrides */
+
+&mcu_r5fss0_core0 {
+	firmware-name = "j722s-mcu-r5f0_0-fw";
+};
+
+/* Wakeup domain overrides */
+
+&wkup_r5fss0_core0 {
+	firmware-name = "j722s-wkup-r5f0_0-fw";
+};
-- 
2.34.1