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Merge pull request #3458 from shawn1221/mmc-upstream-20200316 

component: sdio: fix potential ricky clock setting
This commit is contained in:
Bernard Xiong 2020-03-16 21:20:09 +08:00 committed by GitHub
parent 822d8f4002 4c7106fa9d
commit cc319ac1aa
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GPG Key ID: 4AEE18F83AFDEB23
1 changed files with 3 additions and 9 deletions
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12
components/drivers/sdio/mmc.c
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@ -191,7 +191,7 @@ static int mmc_parse_ext_csd(struct rt_mmcsd_card *card, rt_uint8_t *ext_csd)
}
card->flags |= CARD_FLAG_HIGHSPEED;
card->hs_max_data_rate = 200000000;
card->hs_max_data_rate = 52000000;
card_capacity = *((rt_uint32_t *)&ext_csd[EXT_CSD_SEC_CNT]);
card_capacity *= card->card_blksize;
@ -513,16 +513,10 @@ static rt_int32_t mmcsd_mmc_init_card(struct rt_mmcsd_host *host,
card->flags |= CARD_FLAG_SDHC;
/* set bus speed */
max_data_rate = (unsigned int)-1;
if (card->flags & CARD_FLAG_HIGHSPEED)
{
if (max_data_rate > card->hs_max_data_rate)
max_data_rate = card->hs_max_data_rate;
}
else if (max_data_rate > card->max_data_rate)
{
max_data_rate = card->hs_max_data_rate;
else
max_data_rate = card->max_data_rate;
}
mmcsd_set_clock(host, max_data_rate);