From: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Date: Tue, 11 Nov 2025 12:00:22 +0000 (-0800)
Subject: arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=9ceb1cf5b200d215292ea92a3e176806c847dae1;p=thirdparty%2Flinux.git

arm64: dts: imx8mp: make 'dsp' node depend on 'aips5'

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.

Reviewed-by: Daniel Baluta <daniel.baluta@nxp.com>
Signed-off-by: Laurentiu Mihalcea <laurentiu.mihalcea@nxp.com>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>
---

diff --git a/arch/arm64/boot/dts/freescale/imx8mp-aipstz.h b/arch/arm64/boot/dts/freescale/imx8mp-aipstz.h
new file mode 100644
index 0000000000000..6481c484ca379
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-aipstz.h
@@ -0,0 +1,33 @@
+/* SPDX-License-Identifier: (GPL-2.0-only OR MIT) */
+/*
+ * Copyright 2025 NXP
+ */
+
+#ifndef __IMX8MP_AIPSTZ_H
+#define __IMX8MP_AIPSTZ_H
+
+/* consumer type - master or peripheral */
+#define IMX8MP_AIPSTZ_MASTER		0x0
+#define IMX8MP_AIPSTZ_PERIPH		0x1
+
+/* master configuration options */
+#define IMX8MP_AIPSTZ_MPL		(1 << 0)
+#define IMX8MP_AIPSTZ_MTW		(1 << 1)
+#define IMX8MP_AIPSTZ_MTR		(1 << 2)
+#define IMX8MP_AIPSTZ_MBW		(1 << 3)
+
+/* peripheral configuration options */
+#define IMX8MP_AIPSTZ_TP		(1 << 0)
+#define IMX8MP_AIPSTZ_WP		(1 << 1)
+#define IMX8MP_AIPSTZ_SP		(1 << 2)
+#define IMX8MP_AIPSTZ_BW		(1 << 3)
+
+/* master ID definitions */
+#define IMX8MP_AIPSTZ_EDMA		0 /* AUDIOMIX EDMA */
+#define IMX8MP_AIPSTZ_CA53		1 /* Cortex-A53 cluster */
+#define IMX8MP_AIPSTZ_SDMA2		3 /* AUDIOMIX SDMA2 */
+#define IMX8MP_AIPSTZ_SDMA3		3 /* AUDIOMIX SDMA3 */
+#define IMX8MP_AIPSTZ_HIFI4		5 /* HIFI4 DSP */
+#define IMX8MP_AIPSTZ_CM7		6 /* Cortex-M7 */
+
+#endif /* __IMX8MP_AIPSTZ_H */
diff --git a/arch/arm64/boot/dts/freescale/imx8mp.dtsi b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
index c4350cfd6e732..9b2b3a9bf9e80 100644
--- a/arch/arm64/boot/dts/freescale/imx8mp.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mp.dtsi
@@ -13,6 +13,7 @@
 #include <dt-bindings/interrupt-controller/arm-gic.h>
 #include <dt-bindings/thermal/thermal.h>
 
+#include "imx8mp-aipstz.h"
 #include "imx8mp-pinfunc.h"
 
 / {
@@ -2506,6 +2507,11 @@
 			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";
 		};
 	};