target/linux/mediatek/patches-4.14/0155-mmc-mediatek-add-busy_check-support.patch

   1 From 788d269aee4c612d5cd97b896ea5d22f19137097 Mon Sep 17 00:00:00 2001
   2 From: Chaotian Jing <chaotian.jing@mediatek.com>
   3 Date: Mon, 16 Oct 2017 09:46:34 +0800
   4 Subject: [PATCH 155/224] mmc: mediatek: add busy_check support
   5
   6 bit7 of PATCH_BIT1 has different meaning in new design, to
   7 compatible with previous platform, clear this bit in new
   8 platform.
   9
  10 Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
  11 Tested-by: Sean Wang <sean.wang@mediatek.com>
  12 Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
  13 ---
  14  drivers/mmc/host/mtk-sd.c | 7 +++++++
  15  1 file changed, 7 insertions(+)
  16
  17 diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
  18 index 8113bacc1540..eceaee86ba4d 100644
  19 --- a/drivers/mmc/host/mtk-sd.c
  20 +++ b/drivers/mmc/host/mtk-sd.c
  21 @@ -316,6 +316,7 @@ struct mtk_mmc_compatible {
  22         u32 pad_tune_reg;
  23         bool async_fifo;
  24         bool data_tune;
  25 +       bool busy_check;
  26  };
  27
  28  struct msdc_tune_para {
  29 @@ -380,6 +381,7 @@ static const struct mtk_mmc_compatible mt8135_compat = {
  30         .pad_tune_reg = MSDC_PAD_TUNE,
  31         .async_fifo = false,
  32         .data_tune = false,
  33 +       .busy_check = false,
  34  };
  35
  36  static const struct mtk_mmc_compatible mt8173_compat = {
  37 @@ -388,6 +390,7 @@ static const struct mtk_mmc_compatible mt8173_compat = {
  38         .pad_tune_reg = MSDC_PAD_TUNE,
  39         .async_fifo = false,
  40         .data_tune = false,
  41 +       .busy_check = false,
  42  };
  43
  44  static const struct mtk_mmc_compatible mt2701_compat = {
  45 @@ -396,6 +399,7 @@ static const struct mtk_mmc_compatible mt2701_compat = {
  46         .pad_tune_reg = MSDC_PAD_TUNE0,
  47         .async_fifo = true,
  48         .data_tune = true,
  49 +       .busy_check = false,
  50  };
  51
  52  static const struct mtk_mmc_compatible mt2712_compat = {
  53 @@ -404,6 +408,7 @@ static const struct mtk_mmc_compatible mt2712_compat = {
  54         .pad_tune_reg = MSDC_PAD_TUNE0,
  55         .async_fifo = true,
  56         .data_tune = true,
  57 +       .busy_check = true,
  58  };
  59
  60  static const struct of_device_id msdc_of_ids[] = {
  61 @@ -1275,6 +1280,8 @@ static void msdc_init_hw(struct msdc_host *host)
  62         sdr_set_field(host->base + MSDC_PATCH_BIT, MSDC_CKGEN_MSDC_DLY_SEL, 1);
  63         writel(0xffff4089, host->base + MSDC_PATCH_BIT1);
  64         sdr_set_bits(host->base + EMMC50_CFG0, EMMC50_CFG_CFCSTS_SEL);
  65 +       if (host->dev_comp->busy_check)
  66 +               sdr_clr_bits(host->base + MSDC_PATCH_BIT1, (1 << 7));
  67         if (host->dev_comp->async_fifo) {
  68                 sdr_set_field(host->base + MSDC_PATCH_BIT2,
  69                               MSDC_PB2_RESPWAIT, 3);
  70 --
  71 2.11.0
  72