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mmc: core: Enable SDUC

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Enable SDUC if the card responded to ACMD41 with HCS & HO2T bits set.

Reviewed-by: Adrian Hunter <adrian.hunter@intel.com>
Signed-off-by: Avri Altman <avri.altman@wdc.com>
Link: https://lore.kernel.org/r/20241006051148.160278-11-avri.altman@wdc.com
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Avri Altman 2024-10-06 08:11:48 +03:00 committed by Ulf Hansson
parent a786165194
commit 899404e150
1 changed files with 8 additions and 2 deletions
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10
drivers/mmc/core/sd.c
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@ -836,8 +836,11 @@ int mmc_sd_get_cid(struct mmc_host *host, u32 ocr, u32 *cid, u32 *rocr)
* block-addressed SDHC cards.
*/
err = mmc_send_if_cond(host, ocr);
if (!err)
if (!err) {
ocr |= SD_OCR_CCS;
/* Set HO2T as well - SDUC card won't respond otherwise */
ocr |= SD_OCR_2T;
}
/*
* If the host supports one of UHS-I modes, request the card
@ -1448,7 +1451,10 @@ static int mmc_sd_init_card(struct mmc_host *host, u32 ocr,
}
if (!oldcard) {
err = mmc_sd_get_csd(card, false);
u32 sduc_arg = SD_OCR_CCS | SD_OCR_2T;
bool is_sduc = (rocr & sduc_arg) == sduc_arg;
err = mmc_sd_get_csd(card, is_sduc);
if (err)
goto free_card;