linux-kernel - [PATCH 5/5] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'

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Message-Id: <20250221191909.31874-6-laurentiumihalcea111@gmail.com>
Date: Fri, 21 Feb 2025 14:19:09 -0500
From: Laurentiu Mihalcea <laurentiumihalcea111@...il.com>
To: Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>,
	Shawn Guo <shawnguo@...nel.org>,
	Sascha Hauer <s.hauer@...gutronix.de>,
	Fabio Estevam <festevam@...il.com>,
	Daniel Baluta <daniel.baluta@....com>,
	Shengjiu Wang <shengjiu.wang@....com>
Cc: Pengutronix Kernel Team <kernel@...gutronix.de>,
	devicetree@...r.kernel.org,
	imx@...ts.linux.dev,
	linux-arm-kernel@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 5/5] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'

From: Laurentiu Mihalcea <laurentiu.mihalcea@....com>

The DSP may want to access peripherals on AIPSTZ5. To do so, the
security-related registers of the bridge have to be configured before
the DSP is started. Enforce a dependency on AIPSTZ5 by adding the
'access-controllers' property to the 'dsp' node.

Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@....com>
---
 arch/arm64/boot/dts/freescale/imx8mp.dtsi | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index a1d9b834d2da..9ec51e7e6678 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -2423,6 +2423,7 @@ dsp: dsp@...e8000 {
 			mboxes = <&mu2 2 0>, <&mu2 2 1>,
 				<&mu2 3 0>, <&mu2 3 1>;
 			memory-region = <&dsp_reserved>;
+			access-controllers = <&aips5>;
 			status = "disabled";
 		};
 	};
-- 
2.34.1