linux-kernel - [PATCH v2 05/13] ASoC: dt-bindings: mt8192-afe-pcm: Allow specifying reserved memory region

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Message-ID: <20250424102509.1083185-6-wenst@chromium.org>
Date: Thu, 24 Apr 2025 18:24:59 +0800
From: Chen-Yu Tsai <wenst@...omium.org>
To: Liam Girdwood <lgirdwood@...il.com>,
	Mark Brown <broonie@...nel.org>,
	Matthias Brugger <matthias.bgg@...il.com>,
	AngeloGioacchino Del Regno <angelogioacchino.delregno@...labora.com>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Chen-Yu Tsai <wenst@...omium.org>,
	Jaroslav Kysela <perex@...ex.cz>,
	Takashi Iwai <tiwai@...e.com>,
	Jiaxin Yu <jiaxin.yu@...iatek.com>,
	linux-sound@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-arm-kernel@...ts.infradead.org,
	linux-mediatek@...ts.infradead.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH v2 05/13] ASoC: dt-bindings: mt8192-afe-pcm: Allow specifying reserved memory region

It is desirable to reserve memory for the audio frontend.

Allow the "memory-region" property, to be used to point to a reserved
memory region.

Signed-off-by: Chen-Yu Tsai <wenst@...omium.org>
---
 Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml | 5 +++++
 1 file changed, 5 insertions(+)

diff --git a/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml b/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
index 064ef172bef4..8ddf49b0040d 100644
--- a/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
+++ b/Documentation/devicetree/bindings/sound/mt8192-afe-pcm.yaml
@@ -23,6 +23,10 @@ properties:
   reset-names:
     const: audiosys
 
+  memory-region:
+    description: memory region for audio DMA buffers
+    maxItems: 1
+
   mediatek,apmixedsys:
     $ref: /schemas/types.yaml#/definitions/phandle
     description: The phandle of the mediatek apmixedsys controller
@@ -95,6 +99,7 @@ examples:
                       "aud_dac_predis_clk",
                       "aud_infra_clk",
                       "aud_infra_26m_clk";
+        memory-region = <&afe_dma_mem>;
     };
 
 ...
-- 
2.49.0.805.g082f7c87e0-goog