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| author | Yinbo Zhu <yinbo.zhu@nxp.com> | 2019-07-16 15:09:11 +0800 |
|---|---|---|
| committer | Priyanka Jain <priyanka.jain@nxp.com> | 2019-09-12 14:05:38 +0530 |
| commit | 6f883e501b65b0d9826e994011251c3855c208a3 (patch) | |
| tree | efc6dcaf698b1b6b85200c6e6ae48834e2b9c00f /drivers/mmc | |
| parent | 23da111d5fbdd635c1eb4e24c6938ed6cb4bc96f (diff) | |
| download | u-boot-6f883e501b65b0d9826e994011251c3855c208a3.tar.gz u-boot-6f883e501b65b0d9826e994011251c3855c208a3.tar.bz2 u-boot-6f883e501b65b0d9826e994011251c3855c208a3.zip | |
mmc: fsl_esdhc: Add emmc hs200 support
Add eMMC hs200 mode for ls1028a, ls1012a, lx2160a.
This increases eMMC performance.
Tuning procedure is currently not supported.
Signed-off-by: Yinbo Zhu <yinbo.zhu@nxp.com>
Acked-by: Peng Fan <peng.fan@nxp.com>
Signed-off-by: Priyanka Jain <priyanka.jain@nxp.com>
Diffstat (limited to 'drivers/mmc')
| -rw-r--r-- | drivers/mmc/fsl_esdhc.c | 34 |
1 files changed, 19 insertions, 15 deletions
diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c index 07318472a7..28d2312ef7 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -395,10 +395,6 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, esdhc_write32(®s->cmdarg, cmd->cmdarg); esdhc_write32(®s->xfertyp, xfertyp); - if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) || - (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)) - flags = IRQSTAT_BRR; - /* Wait for the command to complete */ start = get_timer(0); while (!(esdhc_read32(®s->irqstat) & flags)) { @@ -458,12 +454,6 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, #ifdef CONFIG_SYS_FSL_ESDHC_USE_PIO esdhc_pio_read_write(priv, data); #else - flags = DATA_COMPLETE; - if ((cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK) || - (cmd->cmdidx == MMC_CMD_SEND_TUNING_BLOCK_HS200)) { - flags = IRQSTAT_BRR; - } - do { irqstat = esdhc_read32(®s->irqstat); @@ -476,7 +466,7 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc, err = -ECOMM; goto out; } - } while ((irqstat & flags) != flags); + } while ((irqstat & DATA_COMPLETE) != DATA_COMPLETE); /* * Need invalidate the dcache here again to avoid any @@ -517,7 +507,9 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock) int div = 1; int pre_div = 2; int ddr_pre_div = mmc->ddr_mode ? 2 : 1; - int sdhc_clk = priv->sdhc_clk; + unsigned int sdhc_clk = priv->sdhc_clk; + u32 time_out; + u32 value; uint clk; if (clock < mmc->cfg->f_min) @@ -538,11 +530,18 @@ static void set_sysctl(struct fsl_esdhc_priv *priv, struct mmc *mmc, uint clock) esdhc_clrsetbits32(®s->sysctl, SYSCTL_CLOCK_MASK, clk); - udelay(10000); + time_out = 20; + value = PRSSTAT_SDSTB; + while (!(esdhc_read32(®s->prsstat) & value)) { + if (time_out == 0) { + printf("fsl_esdhc: Internal clock never stabilised.\n"); + break; + } + time_out--; + mdelay(1); + } esdhc_setbits32(®s->sysctl, SYSCTL_PEREN | SYSCTL_CKEN); - - priv->clock = clock; } #ifdef CONFIG_FSL_ESDHC_USE_PERIPHERAL_CLK @@ -1024,6 +1023,8 @@ static int fsl_esdhc_probe(struct udevice *dev) return ret; } + mmc_of_parse(dev, &plat->cfg); + mmc = &plat->mmc; mmc->cfg = &plat->cfg; mmc->dev = dev; @@ -1081,6 +1082,9 @@ static const struct dm_mmc_ops fsl_esdhc_ops = { .get_cd = fsl_esdhc_get_cd, .send_cmd = fsl_esdhc_send_cmd, .set_ios = fsl_esdhc_set_ios, +#ifdef MMC_SUPPORTS_TUNING + .execute_tuning = fsl_esdhc_execute_tuning, +#endif }; #endif |