linux-kernel - [PATCH 0/2] dmaengine: at_xdmac: retrieve DMA channels from device tree

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Message-ID: <20250205-mchp-dma-v1-0-124b639d5afe@microchip.com>
Date: Wed, 5 Feb 2025 11:17:01 +0530
From: Dharma Balasubiramani <dharma.b@...rochip.com>
To: Ludovic Desroches <ludovic.desroches@...rochip.com>, Vinod Koul
	<vkoul@...nel.org>, Rob Herring <robh@...nel.org>, Krzysztof Kozlowski
	<krzk+dt@...nel.org>, Conor Dooley <conor+dt@...nel.org>, Nicolas Ferre
	<nicolas.ferre@...rochip.com>, Alexandre Belloni
	<alexandre.belloni@...tlin.com>, Claudiu Beznea <claudiu.beznea@...on.dev>,
	Charan Pedumuru <charan.pedumuru@...rochip.com>
CC: <linux-arm-kernel@...ts.infradead.org>, <dmaengine@...r.kernel.org>,
	<linux-kernel@...r.kernel.org>, <devicetree@...r.kernel.org>, "Dharma
 Balasubiramani" <dharma.b@...rochip.com>, Tony Han <tony.han@...rochip.com>,
	Cristian Birsan <cristian.birsan@...rochip.com>
Subject: [PATCH 0/2] dmaengine: at_xdmac: retrieve DMA channels from device
 tree

This patch series adds support to get the number of DMA channels available in
XDMAC from dts. This property is required when the channel count cannot be read
from the XDMAC_GTYPE register (which occurs when accessing from non-secure
world on certain devices)

Signed-off-by: Dharma Balasubiramani <dharma.b@...rochip.com>
---
Dharma Balasubiramani (1):
      dt-bindings: dma: at_xdmac: document dma-channels property

Tony Han (1):
      dmaengine: at_xdmac: get the number of DMA channels from device tree

 .../devicetree/bindings/dma/atmel,sama5d4-dma.yaml | 26 ++++++++++++++--------
 drivers/dma/at_xdmac.c                             | 26 +++++++++++++++++++---
 2 files changed, 40 insertions(+), 12 deletions(-)
---
base-commit: 40b8e93e17bff4a4e0cc129e04f9fdf5daa5397e
change-id: 20250205-mchp-dma-355c838f26f4

Best regards,
-- 
Dharma Balasubiramani <dharma.b@...rochip.com>