[PATCH 04/12] mmc: mediatek: make hs400_tune_response only for mt8173

Chaotian Jing
2017-09-12T09:07:44Z

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>
---
drivers/mmc/host/mtk-sd.c | 8 ++++++--
1 file changed, 6 insertions(+), 2 deletions(-)

diff --git a/drivers/mmc/host/mtk-sd.c b/drivers/mmc/host/mtk-sd.c
index 643c795..e8f8ad9 100644
--- a/drivers/mmc/host/mtk-sd.c
+++ b/drivers/mmc/host/mtk-sd.c
@@ -317,6 +317,7 @@ struct msdc_delay_phase {
struct msdc_host {
struct device *dev;
const struct mtk_mmc_compatible *dev_comp;
+ const char *compatible;
struct mmc_host *mmc; /* mmc structure */
int cmd_rsp;

@@ -666,7 +667,8 @@ static void msdc_set_mclk(struct msdc_host *host, unsigned char timing, u32 hz)
host->base + PAD_CMD_TUNE);
}

- if (timing == MMC_TIMING_MMC_HS400)
+ if (timing == MMC_TIMING_MMC_HS400 &&
+ !strcmp(host->compatible, "mediatek,mt8173-mmc"))
sdr_set_field(host->base + PAD_CMD_TUNE,
MSDC_PAD_TUNE_CMDRRDLY,
host->hs400_cmd_int_delay);
@@ -1594,7 +1596,8 @@ static int msdc_execute_tuning(struct mmc_host *mmc, u32 opcode)
struct msdc_host *host = mmc_priv(mmc);
int ret;

- if (host->hs400_mode)
+ if (host->hs400_mode &&
+ !strcmp(host->compatible, "mediatek,mt8173-mmc"))
ret = hs400_tune_response(mmc, opcode);
else
ret = msdc_tune_response(mmc, opcode);
@@ -1745,6 +1748,7 @@ static int msdc_drv_probe(struct platform_device *pdev)

host->dev = &pdev->dev;
host->dev_comp = of_id->data;
+ host->compatible = of_id->compatible;
host->mmc = mmc;
host->src_clk_freq = clk_get_rate(host->src_clk);
/* Set host parameters to mmc */
--
1.8.1.1.dirty