code.vuplus.com Git - vuplus_openembedded/blob - recipes/linux/linux-kirkwood/mvsdio.patch

   1 Patch obtained from http://www.computingplugs.com/index.php/Fixing_SDHC_access_in_the_Orion/Mainline_kernel
   2
   3 --- a/drivers/mmc/host/mvsdio.c.orig    2009-04-14 20:51:48.000000000 +0000
   4 +++ b/drivers/mmc/host/mvsdio.c 2009-04-19 15:58:42.261724324 +0000
   5 @@ -21,6 +21,7 @@
   6  #include <linux/irq.h>
   7  #include <linux/gpio.h>
   8  #include <linux/mmc/host.h>
   9 +#include <linux/mmc/sd.h>
  10
  11  #include <asm/sizes.h>
  12  #include <asm/unaligned.h>
  13 @@ -123,6 +124,7 @@
  14
  15         dev_dbg(host->dev, "cmd %d (hw state 0x%04x)\n",
  16                 cmd->opcode, mvsd_read(MVSD_HW_STATE));
  17 +       if (cmd->opcode == SD_SWITCH) mdelay(1); /* Voodoo */
  18
  19         cmdreg = MVSD_CMD_INDEX(cmd->opcode);
  20
  21 @@ -620,9 +622,11 @@
  22         if (ios->bus_width == MMC_BUS_WIDTH_4)
  23                 ctrl_reg |= MVSD_HOST_CTRL_DATA_WIDTH_4_BITS;
  24
  25 +#if 0
  26         if (ios->timing == MMC_TIMING_MMC_HS ||
  27             ios->timing == MMC_TIMING_SD_HS)
  28                 ctrl_reg |= MVSD_HOST_CTRL_HI_SPEED_EN;
  29 +#endif
  30
  31         host->ctrl = ctrl_reg;
  32         mvsd_write(MVSD_HOST_CTRL, ctrl_reg);
  33 --- kernel/drivers/mmc/core/core.c.orig 2009-04-14 20:51:48.000000000 +0000
  34 +++ kernel/drivers/mmc/core/core.c      2009-04-19 17:36:35.985746917 +0000
  35 @@ -286,9 +286,9 @@
  36                          * The limit is really 250 ms, but that is
  37                          * insufficient for some crappy cards.
  38                          */
  39 -                       limit_us = 300000;
  40 +                       limit_us = 500000;
  41                 else
  42 -                       limit_us = 100000;
  43 +                       limit_us = 200000;
  44
  45                 /*
  46                  * SDHC cards always use these fixed values.