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

Update sd.c
This commit is contained in:
zhuzhuzhu 2024-06-12 18:14:48 +08:00 committed by GitHub
parent a12736e4c8
commit 1b4b338ed1
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1 changed files with 19 additions and 20 deletions
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39
components/drivers/sdio/sd.c
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@ -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))
{
@ -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;