[U-Boot] [PATCH v2 6/8] mmc: fsl_esdhc: Add emmc hs200 support

Add eMMC hs200 mode support for ls1028a,lx2160a,ls1012a. This increases eMMC performance. Tuning procedure is currently not supported

Signed-off-by: Yinbo Zhu yinbo.zhu@nxp.com --- Change in v2: update the commit information

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 4959e1892b..abe6ea3010 100644 --- a/drivers/mmc/fsl_esdhc.c +++ b/drivers/mmc/fsl_esdhc.c @@ -394,10 +394,6 @@ 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)) { @@ -457,12 +453,6 @@ 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);

@@ -475,7 +465,7 @@ 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 @@ -516,7 +506,9 @@ 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) @@ -537,11 +529,18 @@ 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 @@ -1014,6 +1013,8 @@ 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; @@ -1071,6 +1072,9 @@ 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) {}