Re: [PATCH 0/5] mmc: meson-gx: add cmd23 and descriptor chain mode

Heiner Kallweit
2017-03-24T18:01:52Z

Am 24.03.2017 um 08:27 schrieb Ulf Hansson:
> On 15 March 2017 at 20:16, Heiner Kallweit <hkallweit1@gmail.com> wrote:
>> Apart from three minor improvements this patch series adds support
>> for CMD23 mode and switches the driver to descriptor chain mode.
>>
>> On my system with a 128GB eMMC card this increased the read
>> performance from 10 - 15 MB/s to 140 MB/s.
>>
>> Successfully tested on a Odroid C2 with custom uboot based on recent
>> mainline uboot. Behavior might be different with vendor uboot.
>>
>> Heiner Kallweit (5):
>> mmc: meson-gx: switch irq name to DT node name
>> mmc: meson-gx: improve response reading
>> mmc: meson-gx: use block mode also for just one block
>> mmc: meson-gx: add support for CMD23 mode
>> mmc: meson-gx: switch to descriptor chain mode
>>
>> drivers/mmc/host/meson-gx-mmc.c | 258 ++++++++++++++++++++++------------------
>> 1 file changed, 142 insertions(+), 116 deletions(-)
>>
>> --
>> 2.12.0
>>
>
> Heiner,
>
> As I just applied the series for the "small refactoring", how do you
> want me to handle this one. Is it safe to apply on top or do you need
> to re-base it?
>
This series is superseded. I have reports that introducing descriptor
chain mode breaks SDIO. I'm working on a fixed version which will
need some more testing before I submit it.

Thanks for asking!

Rgds, Heiner

> Kind regards
> Uffe
>