> Subject: [PATCH 0/3] Support SDMA mode on RPI4 target - 32bit > > 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
For patch 2/3, I prefer to use printf, not debug. Other than that, For the whole patchset, Reviewed-by: Peng Fan <peng....@nxp.com> > > This patch is based on my RFC's patches. > > 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 | 16 +++++++++------- > 2 files changed, 10 insertions(+), 7 deletions(-) > > -- > 2.25.0