[PATCH v2 0/3] Support SDMA mode on RPI4 target - 32bit

[Jaehoon Chung <jh80.chung@samsung.com>]

Hi

Is there any comment or plan to apply?

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(-)
>