Re: [PATCH] dmaengine: mmp_pdma: fix wrong extended DRCMR base for SpacemiT K3
"Troy Mitchell" <[email protected]>
| Newsgroups | dev.linux.lists.spacemit,org.infradead.lists.linux-riscv,org.kernel.vger.dmaengine,org.kernel.vger.linux-kernel |
|---|---|
| Message-ID | <[email protected]> |
On Mon Jun 15, 2026 at 10:53 AM CST, Troy Mitchell wrote:
> K3 PDMA shares the same DRCMR layout as K1, where the extended DRCMR
> base address is 0x1100. Commit 6587b8661a0b ("dmaengine: mmp_pdma: add
> SpacemiT K3 support") incorrectly defined DRCMR_EXT_BASE_K3 as 0x1000,
> causing all DRCMR accesses for channels >= 64 to be off by 0x100.
>
> Drop the bogus DRCMR_EXT_BASE_K3 macro and reuse DRCMR_EXT_BASE_DEFAULT
> for the K3 ops.
>
> Fixes: 6587b8661a0b ("dmaengine: mmp_pdma: add SpacemiT K3 support")
To clarify: the previous version was not untested; it simply hadn't been
tested with SPI DMA specifically. This issue only affects DMA for SPI
devices, rather than all DMA-capable peripherals
- Troy