[PATCH v2 2/8] dt-bindings: dsp: fsl,dsp: Add resets property

Daniel Baluta
2025-02-19T19:21:29Z

On i.MX8MP we introduced support for using a reset controller
to control DSP operation.

This patch adds reset property which is required for i.MX8MP.

Signed-off-by: Daniel Baluta <daniel.baluta@nxp.com>
---
.../devicetree/bindings/dsp/fsl,dsp.yaml | 19 ++++++++++++++++++-
1 file changed, 18 insertions(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
index ab93ffd3d2e5..923e7f079f1b 100644
--- a/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
+++ b/Documentation/devicetree/bindings/dsp/fsl,dsp.yaml
@@ -82,6 +82,13 @@ properties:
description:
Phandle to syscon block which provide access for processor enablement

+ resets:
+ description:
+ A pair consisting of phandle to audio-blk-control and an index referencing
+ the DSP Run/Stall bit in audiomix registers.
+ See include/dt-bindings/reset/imx8mp-reset-audiomix.h for each index meaning.
+ maxItems: 1
+
required:
- compatible
- reg
@@ -164,6 +171,16 @@ allOf:
- const: txdb1
- const: rxdb0
- const: rxdb1
+ - if:
+ properties:
+ compatible:
+ contains:
+ enum:
+ - fsl,imx8mp-dsp
+ - fsl,imx8mp-hifi4
+ then:
+ required:
+ - "resets"

additionalProperties: false

@@ -220,5 +237,5 @@ examples:
<&mu2 3 0>;
memory-region = <&dsp_vdev0buffer>, <&dsp_vdev0vring0>,
<&dsp_vdev0vring1>, <&dsp_reserved>;
- fsl,dsp-ctrl = <&audio_blk_ctrl>;
+ resets = <&audio_blk_ctrl IMX8MP_AUDIOMIX_DSP>;
};
--
2.25.1