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[fix] 修复ART-PI smart在sd/emmc读取不到分区的问题 (#9058) 

Update sd.c
This commit is contained in:
zhuzhuzhu 2024-06-13 17:06:46 +08:00 committed by GitHub
parent 1e287b2591
commit 2866da37a0
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GPG Key ID: B5690EEEBB952194
1 changed files with 25 additions and 25 deletions
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50
components/drivers/sdio/sd.c
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@ -755,6 +755,31 @@ static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
goto err1;
}
mmcsd_set_timing(host, MMCSD_TIMING_LEGACY);
mmcsd_set_clock(host, 25000000);
/*switch bus width*/
if ((host->flags & MMCSD_BUSWIDTH_4) && (card->scr.sd_bus_widths & SD_SCR_BUS_WIDTH_4))
{
err = mmcsd_app_set_bus_width(card, MMCSD_BUS_WIDTH_4);
if (err)
goto err1;
mmcsd_set_bus_width(host, MMCSD_BUS_WIDTH_4);
}
/* Read and decode SD Status and check whether UHS mode is supported */
union rt_sd_status sd_status;
err = mmcsd_read_sd_status(card, sd_status.status_words);
if (err)
goto err1;
if ((sd_status.uhs_speed_grade > 0) && (ocr & VDD_165_195))
{
/* Assume the card supports all UHS-I modes because we cannot find any mainstreaming card
* that can support only part of the following modes.
*/
card->flags |= CARD_FLAG_SDR50 | CARD_FLAG_SDR104 | CARD_FLAG_DDR50;
}
/*
* change SD card to the highest supported speed
*/
@ -774,31 +799,6 @@ static rt_int32_t mmcsd_sd_init_card(struct rt_mmcsd_host *host,
}
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))
{
err = mmcsd_app_set_bus_width(card, MMCSD_BUS_WIDTH_4);
if (err)
goto err1;
mmcsd_set_bus_width(host, MMCSD_BUS_WIDTH_4);
}
mmcsd_set_timing(host, MMCSD_TIMING_LEGACY);
mmcsd_set_clock(host, 25000000);
/* Read and decode SD Status and check whether UHS mode is supported */
union rt_sd_status sd_status;
err = mmcsd_read_sd_status(card, sd_status.status_words);
if (err)
goto err1;
if ((sd_status.uhs_speed_grade > 0) && (ocr & VDD_165_195))
{
/* Assume the card supports all UHS-I modes because we cannot find any mainstreaming card
* that can support only part of the following modes.
*/
card->flags |= CARD_FLAG_SDR50 | CARD_FLAG_SDR104 | CARD_FLAG_DDR50;
}
host->card = card;
return 0;