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authorJai Luthra <j-luthra@ti.com>2024-09-30 13:02:54 -0400
committerVinod Koul <vkoul@kernel.org>2024-10-14 23:41:05 +0530
commitd35f40642904b017d1301340734b91aef69d1c0c (patch)
tree7a706ed1ae6b4ddc41304014236ddf6a08262314 /usr/include/.gitignore
parent6e9c5c8ef2820d18492d07172ac52f23ea8a54d9 (diff)
dmaengine: ti: k3-udma: Set EOP for all TRs in cyclic BCDMA transfer
When receiving data in cyclic mode from PDMA peripherals, where reload count is set to infinite, any TR in the set can potentially be the last one of the overall transfer. In such cases, the EOP flag needs to be set in each TR and PDMA's Static TR "Z" parameter should be set, matching the size of the TR. This is required for the teardown to function properly and cleanup the internal state memory. This only affects platforms using BCDMA and not those using UDMA-P, which could set EOP flag in the teardown TR automatically. Similarly when transmitting data in cyclic mode to PDMA peripherals, the EOP flag needs to be set to get the teardown completion signal correctly. Fixes: 017794739702 ("dmaengine: ti: k3-udma: Initial support for K3 BCDMA") Tested-by: Francesco Dolcini <francesco.dolcini@toradex.com> # Toradex Verdin AM62 Signed-off-by: Jai Luthra <j-luthra@ti.com> Signed-off-by: Jai Luthra <jai.luthra@linux.dev> Acked-by: Peter Ujfalusi <peter.ujfalusi@gmail.com> Link: https://lore.kernel.org/r/20240930-z_cnt-v2-1-9d38aba149a2@linux.dev Signed-off-by: Vinod Koul <vkoul@kernel.org>
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