linux-kernel - [PATCH v2 2/2] arm64: dts: ti: k3-j784s4-main: Add C71x DSP nodes

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Date:   Thu, 30 Mar 2023 09:15:36 -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 v2 2/2] arm64: dts: ti: k3-j784s4-main: Add C71x DSP nodes

The J784S4 SoCs have four TMS320C71x DSP subsystems in the MAIN voltage
domain. The functionality of these DSP subsystems is similar to the C71x
DSP subsystems on earlier k3 device J721S2. Each subsystem has a 48 KB of
L1D configurable SRAM/Cache and 512 KB of L2 SRAM/Cache. This subsystem
has a CMMU but is not currently used. The inter-processor communication
between the main A72 cores and the C71x DSPs is achieved through shared
memory and mailboxes. Add the DT nodes for these DSP processor sub-systems.

Signed-off-by: Hari Nagalla <hnagalla@...com>
---
 arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi | 48 ++++++++++++++++++++++
 1 file changed, 48 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
index 3c785cef4f20..7277bf6eda09 100644
--- a/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j784s4-main.dtsi
@@ -1232,4 +1232,52 @@
 			ti,loczrama = <1>;
 		};
 	};
+
+	c71_0: dsp@...00000 {
+		compatible = "ti,j721s2-c71-dsp";
+		reg = <0x00 0x64800000 0x00 0x00080000>,
+		      <0x00 0x64e00000 0x00 0x0000c000>;
+		reg-names = "l2sram", "l1dram";
+		ti,sci = <&sms>;
+		ti,sci-dev-id = <30>;
+		ti,sci-proc-ids = <0x30 0xff>;
+		resets = <&k3_reset 30 1>;
+		firmware-name = "j784s4-c71_0-fw";
+	};
+
+	c71_1: dsp@...00000 {
+		compatible = "ti,j721s2-c71-dsp";
+		reg = <0x00 0x65800000 0x00 0x00080000>,
+		      <0x00 0x65e00000 0x00 0x0000c000>;
+		reg-names = "l2sram", "l1dram";
+		ti,sci = <&sms>;
+		ti,sci-dev-id = <33>;
+		ti,sci-proc-ids = <0x31 0xff>;
+		resets = <&k3_reset 33 1>;
+		firmware-name = "j784s4-c71_1-fw";
+	};
+
+	c71_2: dsp@...00000 {
+		compatible = "ti,j721s2-c71-dsp";
+		reg = <0x00 0x66800000 0x00 0x00080000>,
+		      <0x00 0x66e00000 0x00 0x0000c000>;
+		reg-names = "l2sram", "l1dram";
+		ti,sci = <&sms>;
+		ti,sci-dev-id = <37>;
+		ti,sci-proc-ids = <0x32 0xff>;
+		resets = <&k3_reset 37 1>;
+		firmware-name = "j784s4-c71_2-fw";
+	};
+
+	c71_3: dsp@...00000 {
+		compatible = "ti,j721s2-c71-dsp";
+		reg = <0x00 0x67800000 0x00 0x00080000>,
+		      <0x00 0x67e00000 0x00 0x0000c000>;
+		reg-names = "l2sram", "l1dram";
+		ti,sci = <&sms>;
+		ti,sci-dev-id = <40>;
+		ti,sci-proc-ids = <0x33 0xff>;
+		resets = <&k3_reset 40 1>;
+		firmware-name = "j784s4-c71_3-fw";
+	};
 };
-- 
2.17.1