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From: Laurentiu Mihalcea <laurentiumihalcea111@gmail.com>
To: Rob Herring <robh@kernel.org>,
	Krzysztof Kozlowski <krzk+dt@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>,
	Shawn Guo <shawnguo@kernel.org>,
	Sascha Hauer <s.hauer@pengutronix.de>,
	Fabio Estevam <festevam@gmail.com>,
	Daniel Baluta <daniel.baluta@nxp.com>,
	Shengjiu Wang <shengjiu.wang@nxp.com>,
	Frank Li <Frank.li@nxp.com>,
	Marco Felsch <m.felsch@pengutronix.de>,
	Marc Kleine-Budde <mkl@pengutronix.de>
Cc: Pengutronix Kernel Team <kernel@pengutronix.de>,
	devicetree@vger.kernel.org, imx@lists.linux.dev,
	linux-arm-kernel@lists.infradead.org,
	linux-kernel@vger.kernel.org
Subject: [PATCH v3 5/5] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'
Date: Mon, 24 Mar 2025 12:25:56 -0400	[thread overview]
Message-ID: <20250324162556.30972-6-laurentiumihalcea111@gmail.com> (raw)
In-Reply-To: <20250324162556.30972-1-laurentiumihalcea111@gmail.com>

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

The DSP needs to access peripherals on AIPSTZ5 (to communicate with
the AP using AUDIOMIX MU, for instance). 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@nxp.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 ce9f6da1e257..db14e85023a0 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -2425,6 +2425,7 @@ dsp: dsp@3b6e8000 {
 			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


      parent reply	other threads:[~2025-03-24 16:30 UTC|newest]

Thread overview: 13+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2025-03-24 16:25 [PATCH v3 0/5] imx8mp: add support for the IMX AIPSTZ bridge Laurentiu Mihalcea
2025-03-24 16:25 ` [PATCH v3 1/5] dt-bindings: bus: add documentation " Laurentiu Mihalcea
2025-03-25  3:23   ` Rob Herring
2025-03-26 10:25     ` Marco Felsch
2025-03-26 12:25       ` Marco Felsch
2025-03-28 12:34     ` Mihalcea Laurentiu
2025-03-31  6:41       ` Marco Felsch
2025-03-31 11:57         ` Mihalcea Laurentiu
2025-03-31 14:15       ` Rob Herring
2025-03-24 16:25 ` [PATCH v3 2/5] dt-bindings: dsp: fsl,dsp: document 'access-controllers' property Laurentiu Mihalcea
2025-03-24 16:25 ` [PATCH v3 3/5] bus: add driver for IMX AIPSTZ bridge Laurentiu Mihalcea
2025-03-24 16:25 ` [PATCH v3 4/5] arm64: dts: imx8mp: convert 'aips5' to 'aipstz5' Laurentiu Mihalcea
2025-03-24 16:25 ` Laurentiu Mihalcea [this message]

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