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mmc: fsl_esdhc: Add emmc hs200 support

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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>
This commit is contained in:
Yinbo Zhu 2019-07-16 15:09:11 +08:00 • committed by Priyanka Jain
parent 23da111d5f
commit 6f883e501b
2 changed files with 23 additions and 15 deletions
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34
drivers/mmc/fsl_esdhc.c
View file

@ -395,10 +395,6 @@ static int esdhc_send_cmd_common(struct fsl_esdhc_priv *priv, struct mmc *mmc,
esdhc_write32(&regs->cmdarg, cmd->cmdarg);
esdhc_write32(&regs->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(&regs->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(&regs->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(&regs->sysctl, SYSCTL_CLOCK_MASK, clk);
udelay(10000);
time_out = 20;
value = PRSSTAT_SDSTB;
while (!(esdhc_read32(&regs->prsstat) & value)) {
if (time_out == 0) {
printf("fsl_esdhc: Internal clock never stabilised.\n");
break;
}
time_out--;
mdelay(1);
}
esdhc_setbits32(&regs->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

4
include/fsl_esdhc.h
View file

@ -205,6 +205,10 @@ struct fsl_esdhc_cfg {
int fsl_esdhc_mmc_init(bd_t *bis);
int fsl_esdhc_initialize(bd_t *bis, struct fsl_esdhc_cfg *cfg);
void fdt_fixup_esdhc(void *blob, bd_t *bd);
#ifdef MMC_SUPPORTS_TUNING
static inline int fsl_esdhc_execute_tuning(struct udevice *dev,
uint32_t opcode) {return 0; }
#endif
#else
static inline int fsl_esdhc_mmc_init(bd_t *bis) { return -ENOSYS; }
static inline void fdt_fixup_esdhc(void *blob, bd_t *bd) {}