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dmaengine: mmp_pdma: add SpacemiT K3 support

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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>
This commit is contained in:
Guodong Xu
2026-05-18 11:32:43 +08:00
committed by Vinod Koul
parent f46b47623e
commit 6587b8661a
1 changed files with 18 additions and 0 deletions
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18
drivers/dma/mmp_pdma.c
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@@ -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",
@@ -1214,6 +1229,9 @@ 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 */
}