From: Max Shevchenko via B4 Relay <devnull+wctrl.proton.me@kernel.org>
To: Sean Wang <sean.wang@mediatek.com>, Vinod Koul <vkoul@kernel.org>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Matthias Brugger <matthias.bgg@gmail.com>,
AngeloGioacchino Del Regno
<angelogioacchino.delregno@collabora.com>,
Long Cheng <long.cheng@mediatek.com>
Cc: dmaengine@vger.kernel.org, linux-arm-kernel@lists.infradead.org,
linux-mediatek@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org, Max Shevchenko <wctrl@proton.me>
Subject: [PATCH 1/3] dt-bindings: dma: mediatek,uart-dma: drop mediatek,dma-33bits property
Date: Sun, 21 Sep 2025 14:03:40 +0300 [thread overview]
Message-ID: <20250921-uart-apdma-v1-1-107543c7102c@proton.me> (raw)
In-Reply-To: <20250921-uart-apdma-v1-0-107543c7102c@proton.me>
From: Max Shevchenko <wctrl@proton.me>
Many newer SoCs support more than 33 bits for DMA.
Drop the property in order to switch to the platform data.
The reference SoCs were taken from the downstream kernel (6.6) for
the MT6991 SoC.
Signed-off-by: Max Shevchenko <wctrl@proton.me>
---
Documentation/devicetree/bindings/dma/mediatek,uart-dma.yaml | 11 ++++-------
1 file changed, 4 insertions(+), 7 deletions(-)
diff --git a/Documentation/devicetree/bindings/dma/mediatek,uart-dma.yaml b/Documentation/devicetree/bindings/dma/mediatek,uart-dma.yaml
index dab468a88942d694525aa391f695c44d192f0c42..9dfdfe81af7edbe3540e4b757547a5d5e6ae810c 100644
--- a/Documentation/devicetree/bindings/dma/mediatek,uart-dma.yaml
+++ b/Documentation/devicetree/bindings/dma/mediatek,uart-dma.yaml
@@ -22,12 +22,14 @@ properties:
- items:
- enum:
- mediatek,mt2712-uart-dma
- - mediatek,mt6795-uart-dma
- mediatek,mt8365-uart-dma
- mediatek,mt8516-uart-dma
- const: mediatek,mt6577-uart-dma
- enum:
- - mediatek,mt6577-uart-dma
+ - mediatek,mt6577-uart-dma # 32 bits
+ - mediatek,mt6795-uart-dma # 33 bits
+ - mediatek,mt6779-uart-dma # 34 bits
+ - mediatek,mt6985-uart-dma # 35 bits
reg:
minItems: 1
@@ -56,10 +58,6 @@ properties:
Number of virtual channels of the UART APDMA controller
maximum: 16
- mediatek,dma-33bits:
- type: boolean
- description: Enable 33-bits UART APDMA support
-
required:
- compatible
- reg
@@ -116,7 +114,6 @@ examples:
dma-requests = <12>;
clocks = <&pericfg CLK_PERI_AP_DMA>;
clock-names = "apdma";
- mediatek,dma-33bits;
#dma-cells = <1>;
};
};
--
2.51.0
next prev parent reply other threads:[~2025-09-21 11:04 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2025-09-21 11:03 [PATCH 0/3] Rewrite MediaTek UART APDMA driver to support more than 33 bits Max Shevchenko via B4 Relay
2025-09-21 11:03 ` Max Shevchenko via B4 Relay [this message]
2025-09-22 20:47 ` [PATCH 1/3] dt-bindings: dma: mediatek,uart-dma: drop mediatek,dma-33bits property Rob Herring
2025-09-23 12:17 ` Max Shevchenko
2025-09-21 11:03 ` [PATCH 2/3] dmaengine: mediatek: mtk-uart-apdma: support more than 33 bits for DMA bitmask Max Shevchenko via B4 Relay
2025-09-22 10:42 ` AngeloGioacchino Del Regno
2025-09-21 11:03 ` [PATCH 3/3] arm64: dts: mediatek: mt6795: drop mediatek,dma-33bits property Max Shevchenko via B4 Relay
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