package/boot/uboot-layerscape/patches/0034-mmc-fsl_esdhc-add-workaround-for-non-removable-card-.patch

   1 From e3e641993a1a5148e71bdd3f7b3cb5da695b1632 Mon Sep 17 00:00:00 2001
   2 From: Yangbo Lu <yangbo.lu@nxp.com>
   3 Date: Fri, 20 May 2016 11:17:30 +0800
   4 Subject: [PATCH 34/93] mmc: fsl_esdhc: add workaround for non-removable card
   5  of esdhc-2
   6
   7 The esdhc-2 usually uses some on-board memory devices such as eMMC
   8 card or SDIO wifi module, and it doesn't support SDHC_CD_B. So we
   9 could only assume it always has a card instead of detecting SDHC_CD_B
  10 status. This patch is to add workaround for these non-removable
  11 cards which are used by esdhc-2.
  12
  13 Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
  14 ---
  15  drivers/mmc/fsl_esdhc.c |    6 +++++-
  16  include/fsl_esdhc.h     |    1 +
  17  2 files changed, 6 insertions(+), 1 deletion(-)
  18
  19 diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
  20 index cacf879..2c6e175 100644
  21 --- a/drivers/mmc/fsl_esdhc.c
  22 +++ b/drivers/mmc/fsl_esdhc.c
  23 @@ -628,6 +628,8 @@ static int esdhc_getcd(struct mmc *mmc)
  24         struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base;
  25         int timeout = 1000;
  26
  27 +       if (cfg->non_removable_card)
  28 +               return 1;
  29  #ifdef CONFIG_ESDHC_DETECT_QUIRK
  30         if (CONFIG_ESDHC_DETECT_QUIRK)
  31                 return 1;
  32 @@ -759,7 +761,9 @@ int fsl_esdhc_mmc_init(bd_t *bis)
  33         cfg_1 = calloc(sizeof(struct fsl_esdhc_cfg), 1);
  34         cfg_1->esdhc_base = CONFIG_SYS_FSL_ESDHC_1_ADDR;
  35         cfg_1->sdhc_clk = gd->arch.sdhc_clk;
  36 -
  37 +#ifdef CONFIG_FSL_ESDHC_1_NON_REMOVABLE_CARD
  38 +       cfg_1->non_removable_card = true;
  39 +#endif
  40         if (fsl_esdhc_initialize(bis, cfg))
  41                 return -1;
  42         if (fsl_esdhc_initialize(bis, cfg_1))
  43 diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h
  44 index 073048f..8335106 100644
  45 --- a/include/fsl_esdhc.h
  46 +++ b/include/fsl_esdhc.h
  47 @@ -175,6 +175,7 @@ struct fsl_esdhc_cfg {
  48  #endif
  49         u32     sdhc_clk;
  50         u8      max_bus_width;
  51 +       bool    non_removable_card;
  52         struct mmc_config cfg;
  53  };
  54
  55 --
  56 1.7.9.5
  57