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Per [1], UDMA TR15 transactions may hang if ICNT0 is less than 64B Work around is to set EOL flag is to 1 for ICNT0. Since, there is no performance penalty / side effects of setting EOL flag event ICNTO > 64B, just set the flag for all UDMAP TR15 descriptors. [1] https://www.ti.com/lit/er/sprz455a/sprz455a.pdf Errata doc for J721E DRA829/TDA4VM Processors Silicon Revision 1.1/1.0 (Rev. A) Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com> [j-choudhary@ti.com: minor cleanups] Signed-off-by: Jayesh Choudhary <j-choudhary@ti.com> Link: https://lore.kernel.org/r/20230323120107.27638-1-j-choudhary@ti.com Signed-off-by: Vinod Koul <vkoul@kernel.org> |
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