[PATCH v7 6/6] arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'

Laurentiu Mihalcea
2025-06-10T16:02:34Z

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 | 5 +++++
1 file changed, 5 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index 9b550f225856..26efea15f6b0 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -2435,6 +2435,11 @@ dsp: dsp@3b6e8000 {
firmware-name = "imx/dsp/hifi4.bin";
resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP_RUNSTALL>;
reset-names = "runstall";
+ access-controllers = <&aips5
+ IMX8MP_AIPSTZ_HIFI4
+ IMX8MP_AIPSTZ_MASTER
+ (IMX8MP_AIPSTZ_MPL | IMX8MP_AIPSTZ_MTW | IMX8MP_AIPSTZ_MTR)
+ >;
status = "disabled";
};
};
--
2.34.1