From: Kishon Vijay Abraham I kishon@ti.com
In absence of Device Manager (DM) services such as at R5 SPL stage, driver will have to natively setup TCHAN/RCHAN/RFLOW cfg registers. Existing UDMA driver performed the above mentioned configuration for UDMA. Add similar configuration for PKTDMA here.
Reviewed-by: Alexander Sverdlin alexander.sverdlin@siemens.com Signed-off-by: Kishon Vijay Abraham I kishon@ti.com Signed-off-by: Siddharth Vadapalli s-vadapalli@ti.com Signed-off-by: Chintan Vankar c-vankar@ti.com ---
Link to v5: https://lore.kernel.org/r/20240813105400.4054657-6-c-vankar@ti.com/
Changes from v5 to v6: - Added Reviewed-by tag from Alexander Sverdlin.
drivers/dma/ti/k3-udma.c | 6 ++++++ 1 file changed, 6 insertions(+)
diff --git a/drivers/dma/ti/k3-udma.c b/drivers/dma/ti/k3-udma.c index b7e674f2186..e23d09e6b81 100644 --- a/drivers/dma/ti/k3-udma.c +++ b/drivers/dma/ti/k3-udma.c @@ -2118,6 +2118,9 @@ static int bcdma_tisci_tx_channel_config(struct udma_chan *uc) if (ret) dev_err(ud->dev, "tchan%d cfg failed %d\n", tchan->id, ret);
+ if (IS_ENABLED(CONFIG_K3_DM_FW)) + udma_alloc_tchan_raw(uc); + return ret; }
@@ -2166,6 +2169,9 @@ static int pktdma_tisci_rx_channel_config(struct udma_chan *uc) dev_err(ud->dev, "flow%d config failed: %d\n", uc->rflow->id, ret);
+ if (IS_ENABLED(CONFIG_K3_DM_FW)) + udma_alloc_rchan_raw(uc); + return ret; }