From: Golla Nagendra <nagendra.golla@amd.com>
To: <vkoul@kernel.org>, <Frank.Li@kernel.org>, <michal.simek@amd.com>,
<robh@kernel.org>, <krzk+dt@kernel.org>, <conor+dt@kernel.org>,
<nagendra.golla@amd.com>, <jay.buddhabhatti@amd.com>,
<harini.katakam@amd.com>, <m.tretter@pengutronix.de>,
<radhey.shyam.pandey@amd.com>, <abin.joseph@amd.com>,
<kees@kernel.org>, <sakari.ailus@linux.intel.com>
Cc: <git@amd.com>, <dmaengine@vger.kernel.org>,
<devicetree@vger.kernel.org>,
<linux-arm-kernel@lists.infradead.org>,
<linux-kernel@vger.kernel.org>
Subject: [PATCH V2 0/3] dmaengine: zynqmp_dma: Add per-channel reset support
Date: Thu, 18 Jun 2026 12:40:53 +0530 [thread overview]
Message-ID: <20260618071056.2024286-1-nagendra.golla@amd.com> (raw)
This series adds per-channel reset support to the ZynqMP DMA driver using
the generic reset framework, along with the corresponding dt-bindings
update. It also adds a runtime PM guard in the IRQ handler to handle
spurious interrupts safely.
Patch 1 adds the optional 'resets' property to the ZynqMP DMA dt-binding.
Patch 2 adds reset control handling in the channel probe path to assert
and deassert the channel reset during initialization.
Patch 3 adds a pm_runtime_get_if_active() check in the IRQ handler to
avoid accessing hardware registers when the device is runtime-suspended,
which could occur on spurious interrupts.
Changes in V2:
- Added patch 3 to guard IRQ handler against spurious interrupts
Golla Nagendra (2):
dmaengine: zynqmp_dma: Add per-channel reset support
dmaengine: zynqmp_dma: Guard IRQ handler against spurious interrupts
Jay Buddhabhatti (1):
dt-bindings: dma: xilinx: Add optional resets property for ZDMA
.../bindings/dma/xilinx/xlnx,zynqmp-dma-1.0.yaml | 3 +++
drivers/dma/xilinx/zynqmp_dma.c | 12 ++++++++++++
2 files changed, 15 insertions(+)
--
2.34.1
next reply other threads:[~2026-06-18 7:11 UTC|newest]
Thread overview: 6+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-06-18 7:10 Golla Nagendra [this message]
2026-06-18 7:10 ` [PATCH V2 1/3] dt-bindings: dma: xilinx: Add optional resets property for ZDMA Golla Nagendra
2026-06-18 7:10 ` [PATCH V2 2/3] dmaengine: zynqmp_dma: Add per-channel reset support Golla Nagendra
2026-06-18 18:52 ` Frank Li
2026-06-18 7:10 ` [PATCH V2 3/3] dmaengine: zynqmp_dma: Guard IRQ handler against spurious interrupts Golla Nagendra
2026-06-18 19:15 ` Frank Li
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