linux-kernel - [PATCH v3 2/4] arm64: dts: k3-am62a-mcu: Add R5F remote proc node

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Message-ID: <20240605124859.3034-3-hnagalla@ti.com>
Date: Wed, 5 Jun 2024 07:48:57 -0500
From: Hari Nagalla <hnagalla@...com>
To: <vigneshr@...com>, <kristo@...nel.org>, <robh+dt@...nel.org>,
        <krzysztof.kozlowski+dt@...aro.org>, <conor+dt@...nel.org>,
        <nm@...com>
CC: <linux-kernel@...r.kernel.org>, <linux-arm-kernel@...ts.infradead.org>,
        <devicetree@...r.kernel.org>
Subject: [PATCH v3 2/4] arm64: dts: k3-am62a-mcu: Add R5F remote proc node

AM62A SoCs have a single R5F core in the MCU voltage domain. The MCU
domain also has a 512KB sram memory, the R5F core can use for
applications needing fast memory access.

Signed-off-by: Hari Nagalla <hnagalla@...com>
---
 arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi | 35 ++++++++++++++++++++++++
 1 file changed, 35 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
index 8c36e56f4138..803da3cce336 100644
--- a/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-am62a-mcu.dtsi
@@ -6,6 +6,17 @@
  */
 
 &cbass_mcu {
+	mcu_ram: sram@...00000 {
+		compatible = "mmio-sram";
+		reg = <0x00 0x79100000 0x00 0x80000>;
+		ranges = <0x00 0x00 0x79100000 0x80000>;
+		#address-cells = <1>;
+		#size-cells = <1>;
+
+		mcu1-sram@0 {
+			reg = <0x0 0x80000>;
+		};
+	};
 	mcu_pmx0: pinctrl@...4000 {
 		compatible = "pinctrl-single";
 		reg = <0x00 0x04084000 0x00 0x88>;
@@ -167,4 +178,28 @@ mcu_mcan1: can@...8000 {
 		bosch,mram-cfg = <0x0 128 64 64 64 64 32 32>;
 		status = "disabled";
 	};
+
+	mcu_r5fss0: r5fss@...00000 {
+		compatible = "ti,am62-r5fss";
+		#address-cells = <1>;
+		#size-cells = <1>;
+		ranges = <0x79000000 0x00 0x79000000 0x8000>,
+			 <0x79020000 0x00 0x79020000 0x8000>;
+		power-domains = <&k3_pds 7 TI_SCI_PD_EXCLUSIVE>;
+		mcu_r5fss0_core0: r5f@...00000 {
+			compatible = "ti,am62-r5f";
+			reg = <0x79000000 0x00008000>,
+				<0x79020000 0x00008000>;
+			reg-names = "atcm", "btcm";
+			ti,sci = <&dmsc>;
+			ti,sci-dev-id = <9>;
+			ti,sci-proc-ids = <0x03 0xff>;
+			resets = <&k3_reset 9 1>;
+			firmware-name = "am62a-mcu-r5f0_0-fw";
+			ti,atcm-enable = <0>;
+			ti,btcm-enable = <1>;
+			ti,loczrama = <0>;
+			sram = <&mcu_ram>;
+		};
+	};
 };
-- 
2.34.1