linux-kernel - [PATCH 1/3] arm64: dts: ti: k3-j721e: Enable C7x DSP nodes at the board level

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Date:   Wed, 9 Aug 2023 13:01:43 -0500
From:   Andrew Davis <afd@...com>
To:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Conor Dooley <conor+dt@...nel.org>, Nishanth Menon <nm@...com>,
        Vignesh Raghavendra <vigneshr@...com>,
        Tero Kristo <kristo@...nel.org>, Udit Kumar <u-kumar1@...com>
CC:     <devicetree@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-kernel@...r.kernel.org>, Andrew Davis <afd@...com>
Subject: [PATCH 1/3] arm64: dts: ti: k3-j721e: Enable C7x DSP nodes at the board level

C7x DSP nodes defined in the top-level J721e SoC dtsi files are incomplete
and will not be functional unless they are extended with both mboxes and
memory-region information.

As theses only known about at the board integration level, these nodes
should only be enabled when provided with this information.

Disable the C7x DSP nodes in the dtsi files and only enable the ones that
are given the required mboxes and memory-region on a given board.

Signed-off-by: Andrew Davis <afd@...com>
---
 arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts | 1 +
 arch/arm64/boot/dts/ti/k3-j721e-main.dtsi          | 1 +
 arch/arm64/boot/dts/ti/k3-j721e-sk.dts             | 1 +
 arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi        | 1 +
 4 files changed, 4 insertions(+)

diff --git a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
index 66aac145e7530..d1235e7c786d6 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-beagleboneai64.dts
@@ -1024,6 +1024,7 @@ &c66_1 {
 };
 
 &c71_0 {
+	status = "okay";
 	mboxes = <&mailbox0_cluster4>, <&mbox_c71_0>;
 	memory-region = <&c71_0_dma_memory_region>,
 			<&c71_0_memory_region>;
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
index 3acd55ffd4ffc..1aeb97b42b34b 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-main.dtsi
@@ -2134,6 +2134,7 @@ c71_0: dsp@...00000 {
 		ti,sci-proc-ids = <0x30 0xff>;
 		resets = <&k3_reset 15 1>;
 		firmware-name = "j7-c71_0-fw";
+		status = "disabled";
 	};
 
 	icssg0: icssg@...0000 {
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
index 0ee4f38ec8f03..377588ba30998 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
+++ b/arch/arm64/boot/dts/ti/k3-j721e-sk.dts
@@ -1110,6 +1110,7 @@ &c66_1 {
 };
 
 &c71_0 {
+	status = "okay";
 	mboxes = <&mailbox0_cluster4>, <&mbox_c71_0>;
 	memory-region = <&c71_0_dma_memory_region>,
 			<&c71_0_memory_region>;
diff --git a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
index e90e43202546e..3c31ab57e959c 100644
--- a/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j721e-som-p0.dtsi
@@ -436,6 +436,7 @@ &c66_1 {
 };
 
 &c71_0 {
+	status = "okay";
 	mboxes = <&mailbox0_cluster4>, <&mbox_c71_0>;
 	memory-region = <&c71_0_dma_memory_region>,
 			<&c71_0_memory_region>;
-- 
2.39.2