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mmc: ftsdc010: Support High-Speed mode

PATCH New Andes 1 participant 1 message Mar 15, 2018 MMC, SD and SDIO

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PATCH 1/3 mmc: ftsdc010: Support High-Speed mode

From: Rick Chen <[email protected]>

ftsdc010 dm driver has been disable High-Speed mode as default to work around Andes AE3XX platform's problem, because of it does not support High-Speed mode in commit id 73cd56b2df213c629191139e5c6705e069b6214f.

But other platforms or SoCs maybe support this function. So High-Speed mode can be enabled from dts with cap-mmc-highspeed or cap-sd-highspeed property.

---
 drivers/mmc/nds32_mmc.c | 5 +++++
 1 file changed, 5 insertions(+)
drivers/mmc/nds32_mmc.c +5 -0
index 6d3c857..ec43e9d 100644
@@ -103,6 +103,11 @@ static int nds32_mmc_probe(struct udevice *dev)
 	if (ret < 0)
 		return ret;
 #endif
+
+	if (dev_read_bool(dev, "cap-mmc-highspeed") || \
+		  dev_read_bool(dev, "cap-sd-highspeed"))
+		chip->caps |= MMC_MODE_HS | MMC_MODE_HS_52MHz;
+
 	ftsdc_setup_cfg(&plat->cfg, dev->name, chip->buswidth, chip->caps,
 			priv->minmax[1] , priv->minmax[0]);
 	chip->mmc = &plat->mmc;
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