Re: [U-Boot] [PATCH v3 0/6] ARM: kirkwood: mvebu_mmc: Speed up access time

Hi,

Any chance to be included in the next release of u-boot ?

Regards, Gérald

Le 15/12/2014 12:14, Mario Schuknecht a écrit :

2014-12-13 21:35 GMT+01:00 Gérald Kerma <drEagle@doukki.net mailto:drEagle@doukki.net>:

This serie of patches speed up access time of MVEBUMMC driver

This is allowed by a fix in MVEBUMMC init status check inspired from linux MVSDIO driver.
         * Hardware weirdness.  The FIFO_EMPTY bit of the HW_STATE
         * register is sometimes not set before a while when some
         * "unusual" data block sizes are used (such as with the SWITCH
         * command), even despite the fact that the XFER_DONE interrupt
         * was raised.  And if another data transfer starts before
         * this bit comes to good sense (which eventually happens by
         * itself) then the new transfer simply fails with a timeout.

It allows about 10x to 40x faster access time transfer on SHEEVAPLUG MMC
It may also fixes some SD types incompatibilities

### before patch

Marvell>> ext2load mmc 0:1 0x800000 uImage
1613392 bytes read in 977 ms (1.6 MiB/s)

### with fix

Marvell>> ext2load mmc 0:1 0x800000 uImage
1613392 bytes read in 83 ms (18.5 MiB/s)

Looks good to me. ACK to this series of patches:

Gérald Kerma (6):
  MVEBUMMC : Change copyright date
  MVEBUMMC : Speed up access time
  MVEBUMMC : FIX debug strings
  MVEBUMMC : REMOVE unnecessary delays
  MVEBUMMC : CLEAN code
  MVEBUMMC : REMOVE unnecessary delay from init


 drivers/mmc/mvebu_mmc.c | 103 ++++++++++++++++++++++++++++--------------------
 include/mvebu_mmc.h     |   1 +
 2 files changed, 61 insertions(+), 43 deletions(-)

--
2.1.3
_______________________________________________
U-Boot mailing list
U-Boot@lists.denx.de <mailto:U-Boot@lists.denx.de>
http://lists.denx.de/mailman/listinfo/u-boot