[PATCH 04/12] mmc: mediatek: make hs400_tune_response only for mt8173
From: Chaotian Jing <chaotian.jing@mediatek.com>
Date: 2017-09-12 09:12:08
Also in:
linux-arm-kernel, linux-mediatek, linux-mmc, lkml
Subsystem:
mediatek mmc/sd/sdio driver, multimedia card (mmc), secure digital (sd) and sdio subsystem, the rest · Maintainers:
Chaotian Jing, Ulf Hansson, Linus Torvalds
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