From: David Yang <mmyangfl@gmail.com>
To: dmaengine@vger.kernel.org
Cc: David Yang <mmyangfl@gmail.com>, Vinod Koul <vkoul@kernel.org>,
Frank Li <Frank.Li@kernel.org>,
Philipp Zabel <p.zabel@pengutronix.de>,
linux-kernel@vger.kernel.org
Subject: [PATCH 0/2] dmaengine: pl08x: Support the Hi3798MV100 PL080 variant
Date: Wed, 4 Nov 2026 23:45:37 +0800 [thread overview]
Message-ID: <20261104154542.3131916-1-mmyangfl@gmail.com> (raw)
Hi3798MV100 (HiSilicon HiSTB) carries a PL080-class DMAC. The block
reports 0x0a141080 -- the ID reserved for Samsung's PL080S -- while its
register map is plain PL080 and the instance has 4 channels instead of
the 8 the plain PL080 entry claims.
Set the DT node to arm,primecell-periphid = <0x00041080> and
dma-channels = <4>, and apply the two patches to add that support.
Tested on Hi3798MV100 hardware.
David Yang (2):
dmaengine: pl08x: Release the reset before reading registers
dmaengine: pl08x: Use the channel count from the device tree
drivers/dma/amba-pl08x.c | 23 +++++++++++++++++++++++
1 file changed, 23 insertions(+)
--
2.53.0
next reply other threads:[~2026-11-04 15:46 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-04 15:45 David Yang [this message]
2026-11-04 15:45 ` [PATCH 1/2] dmaengine: pl08x: Release the reset before reading registers David Yang
2026-11-04 15:45 ` [PATCH 2/2] dmaengine: pl08x: Use the channel count from the device tree David Yang
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