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 v2 0/2] dmaengine: pl08x: Support the Hi3798MV100 PL080 variant
Date: Fri, 6 Nov 2026 15:25:57 +0800 [thread overview]
Message-ID: <20261106072602.77560-1-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.
v2:
- fix for shared reset
- use local copy of vendor_data
v1: https://lore.kernel.org/r/20261104154542.3131916-1-mmyangfl@gmail.com/
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 | 34 ++++++++++++++++++++++++++++++++--
1 file changed, 32 insertions(+), 2 deletions(-)
--
2.53.0
next reply other threads:[~2026-11-06 7:26 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-11-06 7:25 David Yang [this message]
2026-11-06 7:25 ` [PATCH v2 1/2] dmaengine: pl08x: Release the reset before reading registers David Yang
2026-11-06 12:32 ` Philipp Zabel
2026-11-06 7:25 ` [PATCH v2 2/2] dmaengine: pl08x: Use the channel count from the device tree David Yang
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