On Sun, Oct 21, 2018 at 06:35:26AM +0900, Yoshihiro Kaneko wrote: > From: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx> > > This patch enables I2C DMA. > > NOTE: I2C7 DMA is not supported by R-Car Gen3 Hardware User's Manual > Rev.0.80E. > > Signed-off-by: Takeshi Kihara <takeshi.kihara.df@xxxxxxxxxxx> > Signed-off-by: Yoshihiro Kaneko <ykaneko0929@xxxxxxxxx> Base patch stack: * renesas-devel-20181121-v4.20-rc3 + "iommu/ipmmu-vmsa: Hook up r8a77990 DT matching code" + "pinctrl: sh-pfc: r8a77990: Add Audio SSI pins, groups and functions" + "pinctrl: sh-pfc: r8a77990: Add Audio clock pins, groups and functions" Config: renesas_defconfig + IPMMU_VMSA Should we enable IPMMU_VMSA in arm64 defconfig and renesas_defconfig? Test with base patch stack: # grep dma /proc/interrupts | grep -v "0 0" (no output) # amixer set "DVC Out" 2% # play xyz.wav # grep dma /proc/interrupts | grep -v "0 0" (no output) Test with base patch stack + this patch applied: # grep dma /proc/interrupts | grep -v "0 0" (no output) # amixer set "DVC Out" 2% # play xyz.wav # grep dma /proc/interrupts | grep -v "0 0" 109: 512 0 GIC-0 352 Level ec700000.dma-controller:0 Tested-by: Simon Horman <horms+renesas@xxxxxxxxxxxx> Reviewed-by: Simon Horman <horms+renesas@xxxxxxxxxxxx> I plan to apply this patch for v4.21.
