dmaengine: mmp_pdma: fix wrong extended DRCMR base for SpacemiT K3

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The extended DRCMR window on SpacemiT K3 starts at 0x1100. Commit
6587b8661a ("dmaengine: mmp_pdma: add SpacemiT K3 support") incorrectly
set it to 0x1000, causing DRCMR accesses for request IDs >= 64 to target
offsets 0x100 too low.

The 0x1100 base has been verified on K3 silicon using real SPI and QSPI
DMA transactions. The K3 DMA documentation [1] was updated on June 24,
2026, to reflect the corrected register addresses.

Drop the bogus DRCMR_EXT_BASE_K3 macro and reuse
DRCMR_EXT_BASE_DEFAULT for the K3 ops.

Fixes: 6587b8661a ("dmaengine: mmp_pdma: add SpacemiT K3 support")
Link: https://www.spacemit.com/community/document/info?nodepath=hardware/key_stone/k3/k3_docs/k3_usermanual/16_peripherals/dma.md&lang=en [1]
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Reviewed-by: Frank Li <Frank.Li@nxp.com>
Link: https://patch.msgid.link/20260727-k3-pdma-fix-drcmr-base-v2-1-afba55cba1f3@linux.spacemit.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>

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This commit is contained in:

Troy Mitchell 2026-07-27 01:26:15 -07:00 • committed by Vinod Koul

parent cee9395acd

commit d1fc569fcb

1 changed files with 1 additions and 2 deletions

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drivers/dma/mmp_pdma.c

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