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mmc: tmio: add eMMC HS400 mode support

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This patch adds processing for selecting HS400 mode.

Signed-off-by: Masaharu Hayakawa <masaharu.hayakawa.ry@renesas.com>
Signed-off-by: Simon Horman <horms+renesas@verge.net.au>
Signed-off-by: Ulf Hansson <ulf.hansson@linaro.org>
This commit is contained in:
Masaharu Hayakawa
2018-06-18 14:57:50 +02:00
committed by Ulf Hansson
parent ba6c7ac3a2
commit db924bba47
3 changed files with 54 additions and 2 deletions
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3
include/linux/mfd/tmio.h
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@@ -90,6 +90,9 @@
/* Some controllers have a CBSY bit */
#define TMIO_MMC_HAVE_CBSY BIT(11)
/* Some controllers that support HS400 use use 4 taps while others use 8. */
#define TMIO_MMC_HAVE_4TAP_HS400 BIT(13)
int tmio_core_mmc_enable(void __iomem *cnf, int shift, unsigned long base);
int tmio_core_mmc_resume(void __iomem *cnf, int shift, unsigned long base);
void tmio_core_mmc_pwr(void __iomem *cnf, int shift, int state);