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From bc70c7f1174b937af2784977281a1567f69dd2b6 Mon Sep 17 00:00:00 2001
From: Chaotian Jing <chaotian.jing@mediatek.com>
Date: Mon, 16 Oct 2017 09:46:31 +0800
Subject: [PATCH 152/224] mmc: mediatek: make hs400_tune_response only for
mt8173
the origin design of hs400_tune_response is for mt8173 because of
mt8173 has a special design. for doing that, we add a new member
"compatible", by now it's only for mt8173.
Signed-off-by: Chaotian Jing <chaotian.jing@mediatek.com>
Tested-by: Sean Wang <sean.wang@mediatek.com>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
---
drivers/mmc/host/mtk-sd.c | 11 +++++++++--
1 file changed, 9 insertions(+), 2 deletions(-)
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -302,6 +302,7 @@ struct msdc_save_para {
struct mtk_mmc_compatible {
u8 clk_div_bits;
+ bool hs400_tune; /* only used for MT8173 */
};
struct msdc_tune_para {
@@ -362,18 +363,22 @@ struct msdc_host {
static const struct mtk_mmc_compatible mt8135_compat = {
.clk_div_bits = 8,
+ .hs400_tune = false,
};
static const struct mtk_mmc_compatible mt8173_compat = {
.clk_div_bits = 8,
+ .hs400_tune = true,
};
static const struct mtk_mmc_compatible mt2701_compat = {
.clk_div_bits = 12,
+ .hs400_tune = false,
};
static const struct mtk_mmc_compatible mt2712_compat = {
.clk_div_bits = 12,
+ .hs400_tune = false,
};
static const struct of_device_id msdc_of_ids[] = {
@@ -668,7 +673,8 @@ static void msdc_set_mclk(struct msdc_ho
host->base + PAD_CMD_TUNE);
}
- if (timing == MMC_TIMING_MMC_HS400)
+ if (timing == MMC_TIMING_MMC_HS400 &&
+ host->dev_comp->hs400_tune)
sdr_set_field(host->base + PAD_CMD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY,
host->hs400_cmd_int_delay);
@@ -1597,7 +1603,8 @@ static int msdc_execute_tuning(struct mm
struct msdc_host *host = mmc_priv(mmc);
int ret;
- if (host->hs400_mode)
+ if (host->hs400_mode &&
+ host->dev_comp->hs400_tune)
ret = hs400_tune_response(mmc, opcode);
else
ret = msdc_tune_response(mmc, opcode);
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