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Groups > linux.kernel > #1730764

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

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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

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Thread

mmc: mediatek: add support of mt2701/mt2712  Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 10/12] mmc: mediatek: add latch-ck support Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 02/12] arm64: dts: mt8173: remove "mediatek,mt8135-mmc" from mmc nodes Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 04/12] mmc: mediatek: make hs400_tune_response only for mt8173 Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 05/12] mmc: mediatek: add pad_tune0 support Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 07/12] mmc: mediatek: add busy_check support Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200
  [PATCH 06/12] mmc: mediatek: add async fifo and data tune support Chaotian Jing <chaotian.jing@mediatek.com> - 2017-09-12 11:20 +0200

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