Merge branch 'master' of git://git.denx.de/u-boot-sh

drivers/mmc/sh_mmcif.c

@@ -103,20 +103,18 @@ static int mmcif_wait_interrupt_flag(struct sh_mmcif_host *host)
 
 static void sh_mmcif_clock_control(struct sh_mmcif_host *host, unsigned int clk)
 {
-	int i;
-
 	sh_mmcif_bitclr(CLK_ENABLE, &host->regs->ce_clk_ctrl);
 	sh_mmcif_bitclr(CLK_CLEAR, &host->regs->ce_clk_ctrl);
 
 	if (!clk)
 		return;
-	if (clk == CLKDEV_EMMC_DATA) {
+
+	if (clk == CLKDEV_EMMC_DATA)
 		sh_mmcif_bitset(CLK_PCLK, &host->regs->ce_clk_ctrl);
-	} else {
-		for (i = 1; (unsigned int)host->clk / (1 << i) >= clk; i++)
-			;
-		sh_mmcif_bitset((i - 1) << 16, &host->regs->ce_clk_ctrl);
-	}
+	else
+		sh_mmcif_bitset((fls(DIV_ROUND_UP(host->clk,
+						  clk) - 1) - 1) << 16,
+				&host->regs->ce_clk_ctrl);
 	sh_mmcif_bitset(CLK_ENABLE, &host->regs->ce_clk_ctrl);
 }
 
@@ -581,8 +579,6 @@ static struct mmc_config sh_mmcif_cfg = {
 	.host_caps	= MMC_MODE_HS | MMC_MODE_HS_52MHz | MMC_MODE_4BIT |
 			  MMC_MODE_8BIT | MMC_MODE_HC,
 	.voltages	= MMC_VDD_32_33 | MMC_VDD_33_34,
-	.f_min		= CLKDEV_MMC_INIT,
-	.f_max		= CLKDEV_EMMC_DATA,
 	.b_max		= CONFIG_SYS_MMC_MAX_BLK_COUNT,
 };
 
@@ -599,6 +595,9 @@ int mmcif_mmc_init(void)
 	host->regs = (struct sh_mmcif_regs *)CONFIG_SH_MMCIF_ADDR;
 	host->clk = CONFIG_SH_MMCIF_CLK;
 
+	sh_mmcif_cfg.f_min = MMC_CLK_DIV_MIN(host->clk);
+	sh_mmcif_cfg.f_max = MMC_CLK_DIV_MAX(host->clk);
+
 	mmc = mmc_create(&sh_mmcif_cfg, host);
 	if (mmc == NULL) {
 		free(host);

drivers/mmc/sh_mmcif.h

@@ -199,7 +199,13 @@ struct sh_mmcif_regs {
 #define SOFT_RST_OFF		(0 << 31)
 
 #define CLKDEV_EMMC_DATA	52000000	/* 52MHz */
-#define	CLKDEV_MMC_INIT		400000		/* 100 - 400 KHz */
+#ifdef CONFIG_RMOBILE
+#define MMC_CLK_DIV_MIN(clk)	(clk / (1 << 9))
+#define MMC_CLK_DIV_MAX(clk)	(clk / (1 << 1))
+#else
+#define MMC_CLK_DIV_MIN(clk)	(clk / (1 << 8))
+#define MMC_CLK_DIV_MAX(clk)	CLKDEV_EMMC_DATA
+#endif
 
 #define MMC_BUS_WIDTH_1		0
 #define MMC_BUS_WIDTH_4		2