ARM: mach-shmobile: mackerel: clarify shdi/mmcif switch settings

* Pins 2 and 4 of switch 33 are documented as don't care on the PCB,
  my testing seems to confirm this.

* I have been unable to do anything sensible with S1 set to on.
  Am I missing something with regards to MMC1?

* Clarify which driver is needed for each switch setting.

* Should the AP4 board code be updated to allow the
  SHDI driver to access SHDI1 as the mackerel code does?

Signed-off-by: Simon Horman <horms@verge.net.au>
Acked-by: Yusuke Goda <yusuke.goda.sx@renesas.com>
Signed-off-by: Paul Mundt <lethal@linux-sh.org>
This commit is contained in:
Simon Horman 2011-01-07 22:26:15 +00:00 committed by Paul Mundt
parent 5a1b70a48c
commit 2150dace47
1 changed files with 2 additions and 3 deletions

View File

@ -169,9 +169,8 @@
* SW1 | SW33
* | bit1 | bit2 | bit3 | bit4
* -------------+------+------+------+-------
* MMC0 OFF | OFF | ON | ON | X
* MMC1 ON | OFF | ON | X | ON
* SDHI1 OFF | ON | X | OFF | ON
* MMC0 OFF | OFF | X | ON | X (Use MMCIF)
* SDHI1 OFF | ON | X | OFF | X (Use MFD_SH_MOBILE_SDHI)
*
*/