mmc: omap_hsmmc: correct max value of clkd
clock divisor can take a max value of 1023. Update code so that card init can be handled at f_min even at higher IP clock frequencies from which clock to the card is derived. Signed-off-by: Balaji T K <balajitk@ti.com> Signed-off-by: Chris Ball <cjb@laptop.org>
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@ -75,6 +75,7 @@
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#define ICE 0x1
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#define ICS 0x2
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#define CEN (1 << 2)
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#define CLKD_MAX 0x3FF /* max clock divisor: 1023 */
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#define CLKD_MASK 0x0000FFC0
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#define CLKD_SHIFT 6
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#define DTO_MASK 0x000F0000
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@ -497,8 +498,8 @@ static u16 calc_divisor(struct omap_hsmmc_host *host, struct mmc_ios *ios)
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if (ios->clock) {
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dsor = DIV_ROUND_UP(clk_get_rate(host->fclk), ios->clock);
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if (dsor > 250)
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dsor = 250;
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if (dsor > CLKD_MAX)
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dsor = CLKD_MAX;
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}
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return dsor;
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