X-Git-Url: http://review.tizen.org/git/?a=blobdiff_plain;f=drivers%2Fmmc%2Ffsl_esdhc.c;h=d01c926c4554debbe4fc6e61239d49cfbfc40ab0;hb=3b4456ec391877a950dd5e98ee20df6560f0e1af;hp=a368fe60db4a285bb5b43a8ec16069ab8e436d24;hpb=1a1e6bf12b3155f47d2661793ceee3daded0d937;p=platform%2Fkernel%2Fu-boot.git

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index a368fe6..d01c926 100644
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -1,5 +1,5 @@
 /*
- * Copyright 2007,2010 Freescale Semiconductor, Inc
+ * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
  * Andy Fleming
  *
  * Based vaguely on the pxa mmc code:
@@ -79,6 +79,9 @@ uint esdhc_xfertyp(struct mmc_cmd *cmd, struct mmc_data *data)
 		if (data->blocks > 1) {
 			xfertyp |= XFERTYP_MSBSEL;
 			xfertyp |= XFERTYP_BCEN;
+#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
+			xfertyp |= XFERTYP_AC12EN;
+#endif
 		}
 
 		if (data->flags & MMC_DATA_READ)
@@ -234,6 +237,11 @@ esdhc_send_cmd(struct mmc *mmc, struct mmc_cmd *cmd, struct mmc_data *data)
 	struct fsl_esdhc_cfg *cfg = (struct fsl_esdhc_cfg *)mmc->priv;
 	volatile struct fsl_esdhc *regs = (struct fsl_esdhc *)cfg->esdhc_base;
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC111
+	if (cmd->cmdidx == MMC_CMD_STOP_TRANSMISSION)
+		return 0;
+#endif
+
 	esdhc_write32(&regs->irqstat, -1);
 
 	sync();
@@ -384,10 +392,6 @@ static int esdhc_init(struct mmc *mmc)
 	int ret = 0;
 	u8 card_absent;
 
-	/* Enable cache snooping */
-	if (cfg && !cfg->no_snoop)
-		esdhc_write32(&regs->scr, 0x00000040);
-
 	/* Reset the entire host controller */
 	esdhc_write32(&regs->sysctl, SYSCTL_RSTA);
 
@@ -395,10 +399,14 @@ static int esdhc_init(struct mmc *mmc)
 	while ((esdhc_read32(&regs->sysctl) & SYSCTL_RSTA) && --timeout)
 		udelay(1000);
 
+	/* Enable cache snooping */
+	if (cfg && !cfg->no_snoop)
+		esdhc_write32(&regs->scr, 0x00000040);
+
 	esdhc_write32(&regs->sysctl, SYSCTL_HCKEN | SYSCTL_IPGEN);
 
 	/* Set the initial clock speed */
-	set_sysctl(mmc, 400000);
+	mmc_set_clock(mmc, 400000);
 
 	/* Disable the BRR and BWR bits in IRQSTAT */
 	esdhc_clrbits32(&regs->irqstaten, IRQSTATEN_BRR | IRQSTATEN_BWR);
@@ -444,7 +452,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 {
 	struct fsl_esdhc *regs;
 	struct mmc *mmc;
-	u32 caps;
+	u32 caps, voltage_caps;
 
 	if (!cfg)
 		return -1;
@@ -462,14 +470,29 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 	mmc->set_ios = esdhc_set_ios;
 	mmc->init = esdhc_init;
 
+	voltage_caps = 0;
 	caps = regs->hostcapblt;
 
+#ifdef CONFIG_SYS_FSL_ERRATUM_ESDHC135
+	caps = caps & ~(ESDHC_HOSTCAPBLT_SRS |
+			ESDHC_HOSTCAPBLT_VS18 | ESDHC_HOSTCAPBLT_VS30);
+#endif
 	if (caps & ESDHC_HOSTCAPBLT_VS18)
-		mmc->voltages |= MMC_VDD_165_195;
+		voltage_caps |= MMC_VDD_165_195;
 	if (caps & ESDHC_HOSTCAPBLT_VS30)
-		mmc->voltages |= MMC_VDD_29_30 | MMC_VDD_30_31;
+		voltage_caps |= MMC_VDD_29_30 | MMC_VDD_30_31;
 	if (caps & ESDHC_HOSTCAPBLT_VS33)
-		mmc->voltages |= MMC_VDD_32_33 | MMC_VDD_33_34;
+		voltage_caps |= MMC_VDD_32_33 | MMC_VDD_33_34;
+
+#ifdef CONFIG_SYS_SD_VOLTAGE
+	mmc->voltages = CONFIG_SYS_SD_VOLTAGE;
+#else
+	mmc->voltages = MMC_VDD_32_33 | MMC_VDD_33_34;
+#endif
+	if ((mmc->voltages & voltage_caps) == 0) {
+		printf("voltage not supported by controller\n");
+		return -1;
+	}
 
 	mmc->host_caps = MMC_MODE_4BIT | MMC_MODE_8BIT;
 
@@ -477,7 +500,7 @@ int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg)
 		mmc->host_caps |= MMC_MODE_HS_52MHz | MMC_MODE_HS;
 
 	mmc->f_min = 400000;
-	mmc->f_max = MIN(gd->sdhc_clk, 50000000);
+	mmc->f_max = MIN(gd->sdhc_clk, 52000000);
 
 	mmc_register(mmc);
 
@@ -498,17 +521,19 @@ int fsl_esdhc_mmc_init(bd_t *bis)
 void fdt_fixup_esdhc(void *blob, bd_t *bd)
 {
 	const char *compat = "fsl,esdhc";
-	const char *status = "okay";
 
+#ifdef CONFIG_FSL_ESDHC_PIN_MUX
 	if (!hwconfig("esdhc")) {
-		status = "disabled";
-		goto out;
+		do_fixup_by_compat(blob, compat, "status", "disabled",
+				8 + 1, 1);
+		return;
 	}
+#endif
 
 	do_fixup_by_compat_u32(blob, compat, "clock-frequency",
 			       gd->sdhc_clk, 1);
-out:
-	do_fixup_by_compat(blob, compat, "status", status,
-			   strlen(status) + 1, 1);
+
+	do_fixup_by_compat(blob, compat, "status", "okay",
+			   4 + 1, 1);
 }
 #endif