[OpenWrt-Devel] [PATCH] ramips: mmc: Read mmc-caps from dt with mmc_of_parse

[Benedikt-Alexander Mokroß]

The original mmc-driver for ramips used hardcoded mmc-caps.
This patch removes the hardcoded caps and enables dt parsing with 
mmc_of_parse.

Signed-off-by: Benedikt-Alexander Mokroß <openwrt at bamkrs.de>
---
  .../ramips/files/drivers/mmc/host/mtk-mmc/sd.c      | 13 ++++++++++---
  1 file changed, 10 insertions(+), 3 deletions(-)

diff --git a/target/linux/ramips/files/drivers/mmc/host/mtk-mmc/sd.c 
b/target/linux/ramips/files/drivers/mmc/host/mtk-mmc/sd.c
index 8cbc87da3a..c027526118 100644
--- a/target/linux/ramips/files/drivers/mmc/host/mtk-mmc/sd.c
+++ b/target/linux/ramips/files/drivers/mmc/host/mtk-mmc/sd.c
@@ -2235,10 +2235,19 @@ static int msdc_drv_probe(struct platform_device 
*pdev)
  	mmc->f_max      = HOST_MAX_MCLK;
  	mmc->ocr_avail  = MSDC_OCR_AVAIL;

-	mmc->caps   = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;
+	ret = mmc_of_parse(mmc);
+	if (ret)
+		goto release;

-	//TODO: read this as bus-width from dt (via mmc_of_parse)
-	mmc->caps  |= MMC_CAP_4_BIT_DATA;
+	if (mmc->f_max > HOST_MAX_MCLK) {
+		dev_warn(mmc->parent,
+				"\"max-frequency\" property greater than max-frequency of %d, using 
%d.\n",
+				HOST_MAX_MCLK, HOST_MAX_MCLK);
+		mmc->f_max = HOST_MAX_MCLK;
+	}
+
+	/* It seems these caps must be set regardles of the dt */
+	mmc->caps   = MMC_CAP_MMC_HIGHSPEED | MMC_CAP_SD_HIGHSPEED;

  	cd_active_low = !of_property_read_bool(pdev->dev.of_node, 
"mediatek,cd-high");

-- 
2.20.1


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