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#define BCM2835_MCI_SLOTISR_VER 0xfc
#define MIN_FREQ 400000
#define BLOCK_SHIFT 16
#define SDHCI_SPEC_100 0
#define SDHCI_SPEC_200 1
#define SDHCI_SPEC_300 2
#define CONTROL0_HISPEED (1 << 2)
#define CONTROL0_4DATA (1 << 1)
#define CONTROL1_DATARST (1 << 26)
#define CONTROL1_CMDRST (1 << 25)
#define CONTROL1_HOSTRST (1 << 24)
#define CONTROL1_CLKSELPROG (1 << 5)
#define CONTROL1_CLKENA (1 << 2)
#define CONTROL1_CLK_STABLE (1 << 1)
#define CONTROL1_INTCLKENA (1 << 0)
#define CONTROL1_CLKMSB 6
#define CONTROL1_CLKLSB 8
#define CONTROL1_TIMEOUT (0x0E << 16)
#define MAX_CLK_DIVIDER_V3 2046
#define MAX_CLK_DIVIDER_V2 256
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