Linux kernel mirror (for testing)
git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git
kernel
os
linux
mmc: core: Enable SDUC
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>
authored by
Avri Altman
and committed by
Ulf Hansson
899404e1
a7861651
+8
-2
+8
-2
drivers/mmc/core/sd.c
+8
-2
drivers/mmc/core/sd.c
···
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* block-addressed SDHC cards.
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*/
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err = mmc_send_if_cond(host, ocr);
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-
if (!err)
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+
if (!err) {
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ocr |= SD_OCR_CCS;
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+
/* Set HO2T as well - SDUC card won't respond otherwise */
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+
ocr |= SD_OCR_2T;
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+
}
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/*
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* If the host supports one of UHS-I modes, request the card
···
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}
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if (!oldcard) {
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-
err = mmc_sd_get_csd(card, false);
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+
u32 sduc_arg = SD_OCR_CCS | SD_OCR_2T;
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bool is_sduc = (rocr & sduc_arg) == sduc_arg;
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+
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err = mmc_sd_get_csd(card, is_sduc);
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if (err)
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goto free_card;
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