patches/0131-ENGR00124951-Uboot-cannot-initialize-MMC-cards.patch

   1 From 1ac6a858ea0d1618b9341794c4b9b550cce659ad Mon Sep 17 00:00:00 2001
   2 From: Anish Trivedi <anish@freescale.com>
   3 Date: Wed, 7 Jul 2010 12:11:44 -0500
   4 Subject: [PATCH] ENGR00124951 Uboot cannot initialize MMC cards
   5
   6 Removed low voltage (1.8V) from supported voltage ranges.
   7 Changed SD2_CMD pad setting to enable SD2 r/w in uboot.
   8 Loaded env from booted device instead of SD1 always.
   9
  10 Signed-off-by: Anish Trivedi <anish@freescale.com>
  11 ---
  12  board/freescale/mx50_arm2/mx50_arm2.c |    8 ++++----
  13  drivers/mmc/imx_esdhc.c               |    2 --
  14  2 files changed, 4 insertions(+), 6 deletions(-)
  15
  16 diff --git a/board/freescale/mx50_arm2/mx50_arm2.c b/board/freescale/mx50_arm2/mx50_arm2.c
  17 index d606dfc..bb0ea3a 100644
  18 --- a/board/freescale/mx50_arm2/mx50_arm2.c
  19 +++ b/board/freescale/mx50_arm2/mx50_arm2.c
  20 @@ -434,13 +434,13 @@ int get_mmc_env_devno()
  21
  22         switch (soc_sbmr & 0x00300000) {
  23         default:
  24 -       case 0:
  25 +       case 0x0:
  26                 mmc_devno = 0;
  27                 break;
  28 -       case 1:
  29 +       case 0x00100000:
  30                 mmc_devno = 1;
  31                 break;
  32 -       case 2:
  33 +       case 0x00200000:
  34                 mmc_devno = 2;
  35                 break;
  36         }
  37 @@ -486,7 +486,7 @@ int esdhc_gpio_init(bd_t *bis)
  38                         mxc_request_iomux(MX50_PIN_SD2_D6,  IOMUX_CONFIG_ALT0);
  39                         mxc_request_iomux(MX50_PIN_SD2_D7,  IOMUX_CONFIG_ALT0);
  40
  41 -                       mxc_iomux_set_pad(MX50_PIN_SD2_CMD, 0x1E4);
  42 +                       mxc_iomux_set_pad(MX50_PIN_SD2_CMD, 0x14);
  43                         mxc_iomux_set_pad(MX50_PIN_SD2_CLK, 0xD4);
  44                         mxc_iomux_set_pad(MX50_PIN_SD2_D0,  0x1D4);
  45                         mxc_iomux_set_pad(MX50_PIN_SD2_D1,  0x1D4);
  46 diff --git a/drivers/mmc/imx_esdhc.c b/drivers/mmc/imx_esdhc.c
  47 index 78e0607..e3a1fb7 100644
  48 --- a/drivers/mmc/imx_esdhc.c
  49 +++ b/drivers/mmc/imx_esdhc.c
  50 @@ -412,8 +412,6 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
  51         mmc->init = esdhc_init;
  52
  53         caps = regs->hostcapblt;
  54 -       if (caps & ESDHC_HOSTCAPBLT_VS18)
  55 -               mmc->voltages |= MMC_VDD_165_195;
  56         if (caps & ESDHC_HOSTCAPBLT_VS30)
  57                 mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
  58         if (caps & ESDHC_HOSTCAPBLT_VS33)
  59 --
  60 1.5.4.4
  61