From: Jelly Jia <Jelly.Jia@cixtech.com>
To: vkoul@kernel.org, robh@kernel.org, krzk+dt@kernel.org,
conor+dt@kernel.org, robin.murphy@arm.com, sboyd@kernel.org,
bmasney+clk@redhat.com, jbrunet+clk@baylibre.com
Cc: devicetree@vger.kernel.org, Frank.Li@kernel.org,
cix-kernel-upstream@cixtech.com, dmaengine@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-kernel@vger.kernel.org, Jelly.Jia@cixtech.com,
linux-clk@vger.kernel.org, joakim.zhang@cixtech.com
Subject: [PATCH v1 3/5] dt-bindings: dma: arm,dma-350: Document dma-channel-mask
Date: Fri, 23 Oct 2026 17:30:43 +0800 [thread overview]
Message-ID: <20261023093045.3248630-4-Jelly.Jia@cixtech.com> (raw)
In-Reply-To: <20261023093045.3248630-1-Jelly.Jia@cixtech.com>
Some DMA-350 integrations reserve channels for firmware or another
processor. Allow the standard dma-channel-mask property so firmware can
describe which channels Linux may use.
DMA-350 implements at most eight channels, so one 32-bit cell is enough;
limit the property to a single cell.
Signed-off-by: Jelly Jia <Jelly.Jia@cixtech.com>
---
Documentation/devicetree/bindings/dma/arm,dma-350.yaml | 3 +++
1 file changed, 3 insertions(+)
diff --git a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
index 43279878207c..98e7bb651210 100644
--- a/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
+++ b/Documentation/devicetree/bindings/dma/arm,dma-350.yaml
@@ -43,6 +43,9 @@ properties:
description:
Optional reset line, where the integration exposes one.
+ dma-channel-mask:
+ maxItems: 1
+
required:
- compatible
- reg
--
2.54.0
next prev parent reply other threads:[~2026-10-23 9:30 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-23 9:30 [PATCH v1 0/5] soc: cix: Add the Sky1 AUDSS DMA-350 interrupt path Jelly Jia
2026-10-23 9:30 ` [PATCH v1 1/5] dt-bindings: soc: cix: Describe the Sky1 AUDSS DMA IRQ controller Jelly Jia
2026-10-23 9:30 ` [PATCH v1 2/5] clk: cix: Handle Sky1 AUDSS DMA interrupt gates as an irqchip Jelly Jia
2026-10-23 9:30 ` Jelly Jia [this message]
2026-10-23 9:30 ` [PATCH v1 4/5] dmaengine: arm-dma350: Honour dma-channel-mask Jelly Jia
2026-10-23 9:30 ` [PATCH v1 5/5] arm64: dts: cix: Add the Sky1 AUDSS DMA-350 integration Jelly Jia
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