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mmc: core: mmc DDR mode should not depend on UHS_DDR50
The MMC_CAP_UHS_DDR50 must work on 1.8v. However, the eMMC DDR mode can work on either 1.8v or 3.3v and should not depend on UHS_DDR50. So get rid of this limitation to let controller without 1.8v signal voltage support can also work for eMMC DDR mode if it claims. Signed-off-by: Dong Aisheng <b29396@freescale.com> Acked-by: Shawn Guo <shawn.guo@linaro.org> Acked-by: Ulf Hansson <ulf.hansson@linaro.org> Signed-off-by: Chris Ball <cjb@laptop.org>
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1 changed files with 2 additions and 6 deletions
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@ -1119,14 +1119,10 @@ static int mmc_init_card(struct mmc_host *host, u32 ocr,
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*/
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if (mmc_card_highspeed(card)) {
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if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_8V)
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&& ((host->caps & (MMC_CAP_1_8V_DDR |
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MMC_CAP_UHS_DDR50))
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== (MMC_CAP_1_8V_DDR | MMC_CAP_UHS_DDR50)))
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&& (host->caps & MMC_CAP_1_8V_DDR))
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ddr = MMC_1_8V_DDR_MODE;
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else if ((card->ext_csd.card_type & EXT_CSD_CARD_TYPE_DDR_1_2V)
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&& ((host->caps & (MMC_CAP_1_2V_DDR |
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MMC_CAP_UHS_DDR50))
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== (MMC_CAP_1_2V_DDR | MMC_CAP_UHS_DDR50)))
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&& (host->caps & MMC_CAP_1_2V_DDR))
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ddr = MMC_1_2V_DDR_MODE;
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}
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