[PATCH v2] dmaengine: dw-edma: Add Xilinx CPM6-DMA DeviceID

From: Devendra K Verma

Date: Fri Jun 05 2026 - 07:29:03 EST


From: Devendra K Verma <devverma@xxxxxxx>

Add Device ID for AMD (Xilinx) CPM6 DMA IP. This IP enables
64 Read and 64 Write Channels.

Adding the relevant dw_edma_pcie_data to use 8 Read and 8 Write
channels for initial commit.

Signed-off-by: Devendra K Verma <devendra.verma@xxxxxxx>
---
Change in v1:
o changed the pointer assignment to intended pointer for clarity.
---
drivers/dma/dw-edma/dw-edma-pcie.c | 16 ++++++++++++++++
1 file changed, 16 insertions(+)

diff --git a/drivers/dma/dw-edma/dw-edma-pcie.c b/drivers/dma/dw-edma/dw-edma-pcie.c
index 0b30ce138503..2082d0021a8d 100644
--- a/drivers/dma/dw-edma/dw-edma-pcie.c
+++ b/drivers/dma/dw-edma/dw-edma-pcie.c
@@ -27,6 +27,7 @@

/* AMD MDB (Xilinx) specific defines */
#define PCI_DEVICE_ID_XILINX_B054 0xb054
+#define PCI_DEVICE_ID_XILINX_B00F 0xb00f

#define DW_PCIE_XILINX_MDB_VSEC_DMA_ID 0x6
#define DW_PCIE_XILINX_MDB_VSEC_ID 0x20
@@ -125,6 +126,19 @@ static const struct dw_edma_pcie_data xilinx_mdb_data = {
.rd_ch_cnt = 8,
};

+static const struct dw_edma_pcie_data xilinx_cpm6_dma_data = {
+ /* MDB registers location */
+ .rg.bar = BAR_0,
+ .rg.off = SZ_4K, /* 4 Kbytes */
+ .rg.sz = SZ_8K, /* 8 Kbytes */
+
+ /* Other */
+ .mf = EDMA_MF_HDMA_NATIVE,
+ .irqs = 1,
+ .wr_ch_cnt = 8,
+ .rd_ch_cnt = 8,
+};
+
static void dw_edma_set_chan_region_offset(struct dw_edma_pcie_data *pdata,
enum pci_barno bar, off_t start_off,
off_t ll_off_gap, size_t ll_size,
@@ -547,6 +561,8 @@ static const struct pci_device_id dw_edma_pcie_id_table[] = {
{ PCI_DEVICE_DATA(SYNOPSYS, EDDA, &snps_edda_data) },
{ PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B054),
(kernel_ulong_t)&xilinx_mdb_data },
+ { PCI_VDEVICE(XILINX, PCI_DEVICE_ID_XILINX_B00F),
+ .driver_data = (kernel_ulong_t)&xilinx_cpm6_dma_data },
{ }
};
MODULE_DEVICE_TABLE(pci, dw_edma_pcie_id_table);
--
2.43.0