Hi Geert, Vinod Geert, thank you for your report, Vinod, thank you for your quick help. > > > This is now commit 847449f23dcbff68 ("dmaengine: rcar-dmac: use TCRB > > > instead of TCR for residue") in slave-dma/next, and breaks serial console > > > input on koelsch (shmobile_defconfig) and salvator-x (renesas_defconfig). > > > Reverting that commit fixes the issue for me. This patch solved my issue (= sound noise), but it is transferring large size data. From "transferring data size" point of view, my sound situation is same as your large serial console input situation? I will ask this to HW guys. Thanks Best regards --- Kuninori Morimoto