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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 v4 6/6] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'
Date: Tue, 1 Apr 2025 11:44:04 -0400
Message-Id: <20250401154404.45932-7-laurentiumihalcea111@gmail.com>
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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>
Reviewed-by: Frank Li <Frank.Li@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/dt=
s/freescale/imx8mp.dtsi
index ebbc99f9ceba..f0f0ff5edea6 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 =3D <&mu2 2 0>, <&mu2 2 1>,
<&mu2 3 0>, <&mu2 3 1>;
memory-region =3D <&dsp_reserved>;
+ access-controllers =3D <&aips5 IMX8MP_AIPSTZ_HIFI4_T_RW_PL>;
status =3D "disabled";
};
};
--=20
2.34.1