Subject: [U-Boot] [PATCH v1 6/7] mmc: fsl_esdhc: Add emmc hs200 support
Add eMMC hs200 mode support for increasing ls1028/ls1012/lx2160 eMMC work performance, but without tuning procedure which will cause mmc doesn't work. and this should be TODO work.
Signed-off-by: Yinbo Zhu yinbo.zhu@nxp.com
Acked-by: Peng Fan peng.fan@nxp.com
drivers/mmc/fsl_esdhc.c | 34 +++++++++++++++++++--------------- include/fsl_esdhc.h | 4 ++++ 2 files changed, 23 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
diff --git a/include/fsl_esdhc.h b/include/fsl_esdhc.h index 7d7e946ab3..3f496b4cea 100644 --- a/include/fsl_esdhc.h +++ b/include/fsl_esdhc.h @@ -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) {} -- 2.17.1
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