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【修复】修复ART-PI samrt上读取不到emmc/sd分区问题 #9051

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merged 1 commit into from
Jun 12, 2024
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【修复】修复ART-PI samrt上读取不到emmc/sd分区问题 #9051

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39 changes: 19 additions & 20 deletions components/drivers/sdio/sd.c
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Original file line number Diff line number Diff line change
Expand Up @@ -755,6 +755,25 @@ static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
goto err1;
}

/*
* change SD card to the highest supported speed
*/
err = mmcsd_switch(card);
if (err)
goto err1;

/* set bus speed */
max_data_rate = (unsigned int)-1;
if (max_data_rate < card->hs_max_data_rate)
{
max_data_rate = card->hs_max_data_rate;
}
if (max_data_rate < card->max_data_rate)
{
max_data_rate = card->max_data_rate;
}

mmcsd_set_clock(host, max_data_rate);
/*switch bus width*/
if ((host->flags & MMCSD_BUSWIDTH_4) && (card->scr.sd_bus_widths & SD_SCR_BUS_WIDTH_4))
{
Expand All @@ -780,26 +799,6 @@ static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
card->flags |= CARD_FLAG_SDR50 | CARD_FLAG_SDR104 | CARD_FLAG_DDR50;
}

/*
* change SD card to the highest supported speed
*/
err = mmcsd_switch(card);
if (err)
goto err1;

/* set bus speed */
max_data_rate = (unsigned int)-1;
if (max_data_rate < card->hs_max_data_rate)
{
max_data_rate = card->hs_max_data_rate;
}
if (max_data_rate < card->max_data_rate)
{
max_data_rate = card->max_data_rate;
}

mmcsd_set_clock(host, max_data_rate);

host->card = card;

return 0;
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