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| author | Guodong Xu <guodong@riscstar.com> | 2026-05-18 11:32:43 +0800 |
|---|---|---|
| committer | Vinod Koul <vkoul@kernel.org> | 2026-05-19 22:46:17 +0530 |
| commit | 6587b8661a0b61c2f4b260bfc9f0e9ef9de0ea2e (patch) | |
| tree | 28308955c1b133d5ef857a98b21fe924b14f1acc | |
| parent | f46b47623e70dea8b03794a5420ffba060425e85 (diff) | |
| download | linux-6587b8661a0b61c2f4b260bfc9f0e9ef9de0ea2e.tar.gz linux-6587b8661a0b61c2f4b260bfc9f0e9ef9de0ea2e.zip | |
dmaengine: mmp_pdma: add SpacemiT K3 support
SpacemiT K3 reuses most of the PDMA IP design found on K1, with one
difference being the extended DRCMR base address. Add "spacemit,k3-pdma"
compatible string and define a new mmp_pdma_ops for K3 PDMA.
Signed-off-by: Guodong Xu <guodong@riscstar.com>
Signed-off-by: Troy Mitchell <troy.mitchell@linux.spacemit.com>
Link: https://patch.msgid.link/20260518-k3-pdma-v6-3-67fdf319a8f8@linux.spacemit.com
Signed-off-by: Vinod Koul <vkoul@kernel.org>
| -rw-r--r-- | drivers/dma/mmp_pdma.c | 18 |
1 files changed, 18 insertions, 0 deletions
diff --git a/drivers/dma/mmp_pdma.c b/drivers/dma/mmp_pdma.c index 6112369006ee..386e85cd4882 100644 --- a/drivers/dma/mmp_pdma.c +++ b/drivers/dma/mmp_pdma.c @@ -52,6 +52,7 @@ #define DCSR_EORINTR BIT(9) /* The end of Receive */ #define DRCMR_BASE 0x0100 +#define DRCMR_EXT_BASE_K3 0x1000 #define DRCMR_EXT_BASE_DEFAULT 0x1100 #define DRCMR_REQ_LIMIT 64 #define DRCMR_MAPVLD BIT(7) /* Map Valid (read / write) */ @@ -1207,6 +1208,20 @@ static const struct mmp_pdma_ops spacemit_k1_pdma_ops = { .drcmr_ext_base = DRCMR_EXT_BASE_DEFAULT, }; +static const struct mmp_pdma_ops spacemit_k3_pdma_ops = { + .write_next_addr = write_next_addr_64, + .read_src_addr = read_src_addr_64, + .read_dst_addr = read_dst_addr_64, + .set_desc_next_addr = set_desc_next_addr_64, + .set_desc_src_addr = set_desc_src_addr_64, + .set_desc_dst_addr = set_desc_dst_addr_64, + .get_desc_src_addr = get_desc_src_addr_64, + .get_desc_dst_addr = get_desc_dst_addr_64, + .run_bits = (DCSR_RUN | DCSR_LPAEEN | DCSR_EORIRQEN | DCSR_EORSTOPEN), + .dma_width = 64, + .drcmr_ext_base = DRCMR_EXT_BASE_K3, +}; + static const struct of_device_id mmp_pdma_dt_ids[] = { { .compatible = "marvell,pdma-1.0", @@ -1215,6 +1230,9 @@ static const struct of_device_id mmp_pdma_dt_ids[] = { .compatible = "spacemit,k1-pdma", .data = &spacemit_k1_pdma_ops }, { + .compatible = "spacemit,k3-pdma", + .data = &spacemit_k3_pdma_ops + }, { /* sentinel */ } }; |