> Subject: Re: [PATCH v2 0/3] Support SDMA mode on RPI4 target - 32bit > > Hi > > Is there any comment or plan to apply?
Sorry, I missed this patchset. Will pick it up. Thanks, Peng. > > Best Regards, > Jaehoon Chung > > On 2/18/20 10:25 AM, Jaehoon Chung wrote: > > RPI4's SDHCI controller is supported SDMA mode. (Checked on kernel > > side) But It doesn't use on u-boot side. Then it's too slow about read/write > performance. > > This patchset is supported SDMA mode on RPI4 target(32bit). > > - I didn't test on RPI4 64bit. > > > > Read/write time about 8MB file > > Before > > - Read : 1.472 seconds > > - Write : 4.690 seconds > > After > > - Read : 0.359 seconds > > - Write : 0.574 seconds > > > > This patch is based on my RFC's patches.RPI4's SDHCI controller is > > supported SDMA mode. (Checked on kernel side) But It doesn't use on > u-boot side. Then it's too slow about read/write performance. > > This patchset is supported SDMA mode on RPI4 target(32bit). > > - I didn't test on RPI4 64bit. > > > > Read/write time about 8MB file > > Before > > - Read : 1.472 seconds > > - Write : 4.690 seconds > > After > > - Read : 0.359 seconds > > - Write : 0.574 seconds > > > > This patch is based on my RFC's patches. > > > > Changelog on V2 > > - Keep printf message instead of debug > > - Add Peng's Reviewed-by tag > > > > Jaehoon Chung (3): > > mmc: sdhci: use phys2bus macro when dma address is accessed > > mmc: sdhci: not return error when SDMA is not supported > > configs: rpi_4_32b_defconfig: enable SDHCI_SDMA config > > > > configs/rpi_4_32b_defconfig | 1 + > > drivers/mmc/sdhci.c | 13 +++++++------ > > 2 files changed, 8 insertions(+), 6 deletions(-) > >
