#if !CONFIG_IS_ENABLED(DM_MMC)
-static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout)
+static int mmc_wait_dat0(struct mmc *mmc, int state, int timeout_us)
{
return -ENOSYS;
}
[MMC_DDR_52] = "MMC DDR52 (52MHz)",
[MMC_HS_200] = "HS200 (200MHz)",
[MMC_HS_400] = "HS400 (200MHz)",
+ [MMC_HS_400_ES] = "HS400ES (200MHz)",
};
if (mode >= MMC_MODES_END)
[UHS_SDR104] = 208000000,
[MMC_HS_200] = 200000000,
[MMC_HS_400] = 200000000,
+ [MMC_HS_400_ES] = 200000000,
};
if (mode == MMC_LEGACY)
return -ECOMM;
}
-int mmc_poll_for_busy(struct mmc *mmc, int timeout)
+int mmc_poll_for_busy(struct mmc *mmc, int timeout_ms)
{
unsigned int status;
int err;
- err = mmc_wait_dat0(mmc, 1, timeout);
+ err = mmc_wait_dat0(mmc, 1, timeout_ms * 1000);
if (err != -ENOSYS)
return err;
return -ECOMM;
}
- if (timeout-- <= 0)
+ if (timeout_ms-- <= 0)
break;
udelay(1000);
}
- if (timeout <= 0) {
+ if (timeout_ms <= 0) {
#if !defined(CONFIG_SPL_BUILD) || defined(CONFIG_SPL_LIBCOMMON_SUPPORT)
pr_err("Timeout waiting card ready\n");
#endif
static int __mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value,
bool send_status)
{
+ unsigned int status, start;
struct mmc_cmd cmd;
- int timeout = DEFAULT_CMD6_TIMEOUT_MS;
+ int timeout_ms = DEFAULT_CMD6_TIMEOUT_MS;
+ bool is_part_switch = (set == EXT_CSD_CMD_SET_NORMAL) &&
+ (index == EXT_CSD_PART_CONF);
int retries = 3;
int ret;
if (mmc->gen_cmd6_time)
- timeout = mmc->gen_cmd6_time * 10;
+ timeout_ms = mmc->gen_cmd6_time * 10;
+
+ if (is_part_switch && mmc->part_switch_time)
+ timeout_ms = mmc->part_switch_time * 10;
cmd.cmdidx = MMC_CMD_SWITCH;
cmd.resp_type = MMC_RSP_R1b;
(index << 16) |
(value << 8);
- while (retries > 0) {
+ do {
ret = mmc_send_cmd(mmc, &cmd, NULL);
+ } while (ret && retries-- > 0);
- if (ret) {
- retries--;
- continue;
- }
+ if (ret)
+ return ret;
- if (!send_status) {
- mdelay(50);
- return 0;
- }
+ start = get_timer(0);
- /* Waiting for the ready status */
- return mmc_poll_for_busy(mmc, timeout);
- }
+ /* poll dat0 for rdy/buys status */
+ ret = mmc_wait_dat0(mmc, 1, timeout_ms * 1000);
+ if (ret && ret != -ENOSYS)
+ return ret;
- return ret;
+ /*
+ * In cases when not allowed to poll by using CMD13 or because we aren't
+ * capable of polling by using mmc_wait_dat0, then rely on waiting the
+ * stated timeout to be sufficient.
+ */
+ if (ret == -ENOSYS && !send_status)
+ mdelay(timeout_ms);
+
+ /* Finally wait until the card is ready or indicates a failure
+ * to switch. It doesn't hurt to use CMD13 here even if send_status
+ * is false, because by now (after 'timeout_ms' ms) the bus should be
+ * reliable.
+ */
+ do {
+ ret = mmc_send_status(mmc, &status);
+
+ if (!ret && (status & MMC_STATUS_SWITCH_ERROR)) {
+ pr_debug("switch failed %d/%d/0x%x !\n", set, index,
+ value);
+ return -EIO;
+ }
+ if (!ret && (status & MMC_STATUS_RDY_FOR_DATA))
+ return 0;
+ udelay(100);
+ } while (get_timer(start) < timeout_ms);
+ return -ETIMEDOUT;
}
int mmc_switch(struct mmc *mmc, u8 set, u8 index, u8 value)
case MMC_HS_400:
speed_bits = EXT_CSD_TIMING_HS400;
break;
+#endif
+#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
+ case MMC_HS_400_ES:
+ speed_bits = EXT_CSD_TIMING_HS400;
+ break;
#endif
case MMC_LEGACY:
speed_bits = EXT_CSD_TIMING_LEGACY;
mmc->card_caps |= MMC_MODE_HS200;
}
#endif
-#if CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
+#if CONFIG_IS_ENABLED(MMC_HS400_SUPPORT) || \
+ CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
if (cardtype & (EXT_CSD_CARD_TYPE_HS400_1_2V |
EXT_CSD_CARD_TYPE_HS400_1_8V)) {
mmc->card_caps |= MMC_MODE_HS400;
if (cardtype & EXT_CSD_CARD_TYPE_26)
mmc->card_caps |= MMC_MODE_HS;
+#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
+ if (ext_csd[EXT_CSD_STROBE_SUPPORT] &&
+ (mmc->card_caps & MMC_MODE_HS400)) {
+ mmc->card_caps |= MMC_MODE_HS400_ES;
+ }
+#endif
+
return 0;
}
#endif
return 0;
}
-#if CONFIG_IS_ENABLED(MMC_HS200_SUPPORT) || CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
-static int mmc_boot_part_access_chk(struct mmc *mmc, unsigned int part_num)
-{
- int forbidden = 0;
- bool change = false;
-
- if (part_num & PART_ACCESS_MASK)
- forbidden = MMC_CAP(MMC_HS_200) | MMC_CAP(MMC_HS_400);
-
- if (MMC_CAP(mmc->selected_mode) & forbidden) {
- pr_debug("selected mode (%s) is forbidden for part %d\n",
- mmc_mode_name(mmc->selected_mode), part_num);
- change = true;
- } else if (mmc->selected_mode != mmc->best_mode) {
- pr_debug("selected mode is not optimal\n");
- change = true;
- }
-
- if (change)
- return mmc_select_mode_and_width(mmc,
- mmc->card_caps & ~forbidden);
-
- return 0;
-}
-#else
-static inline int mmc_boot_part_access_chk(struct mmc *mmc,
- unsigned int part_num)
-{
- return 0;
-}
-#endif
-
int mmc_switch_part(struct mmc *mmc, unsigned int part_num)
{
int ret;
+ int retry = 3;
- ret = mmc_boot_part_access_chk(mmc, part_num);
- if (ret)
- return ret;
-
- ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_PART_CONF,
- (mmc->part_config & ~PART_ACCESS_MASK)
- | (part_num & PART_ACCESS_MASK));
+ do {
+ ret = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL,
+ EXT_CSD_PART_CONF,
+ (mmc->part_config & ~PART_ACCESS_MASK)
+ | (part_num & PART_ACCESS_MASK));
+ } while (ret && retry--);
/*
* Set the capacity if the switch succeeded or was intended
mmc_dump_capabilities("host", mmc->host_caps);
#endif
+ if (mmc_host_is_spi(mmc)) {
+ mmc_set_bus_width(mmc, 1);
+ mmc_select_mode(mmc, SD_LEGACY);
+ mmc_set_clock(mmc, mmc->tran_speed, MMC_CLK_ENABLE);
+ return 0;
+ }
+
/* Restrict card's capabilities by what the host can do */
caps = card_caps & mmc->host_caps;
u32 card_mask = 0;
switch (mode) {
+ case MMC_HS_400_ES:
case MMC_HS_400:
case MMC_HS_200:
if (mmc->cardtype & (EXT_CSD_CARD_TYPE_HS200_1_8V |
#endif
static const struct mode_width_tuning mmc_modes_by_pref[] = {
+#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
+ {
+ .mode = MMC_HS_400_ES,
+ .widths = MMC_MODE_8BIT,
+ },
+#endif
#if CONFIG_IS_ENABLED(MMC_HS400_SUPPORT)
{
.mode = MMC_HS_400,
}
#endif
+#if CONFIG_IS_ENABLED(MMC_HS400_ES_SUPPORT)
+#if !CONFIG_IS_ENABLED(DM_MMC)
+static int mmc_set_enhanced_strobe(struct mmc *mmc)
+{
+ return -ENOTSUPP;
+}
+#endif
+static int mmc_select_hs400es(struct mmc *mmc)
+{
+ int err;
+
+ err = mmc_set_card_speed(mmc, MMC_HS, true);
+ if (err)
+ return err;
+
+ err = mmc_switch(mmc, EXT_CSD_CMD_SET_NORMAL, EXT_CSD_BUS_WIDTH,
+ EXT_CSD_BUS_WIDTH_8 | EXT_CSD_DDR_FLAG |
+ EXT_CSD_BUS_WIDTH_STROBE);
+ if (err) {
+ printf("switch to bus width for hs400 failed\n");
+ return err;
+ }
+ /* TODO: driver strength */
+ err = mmc_set_card_speed(mmc, MMC_HS_400_ES, false);
+ if (err)
+ return err;
+
+ mmc_select_mode(mmc, MMC_HS_400_ES);
+ err = mmc_set_clock(mmc, mmc->tran_speed, false);
+ if (err)
+ return err;
+
+ return mmc_set_enhanced_strobe(mmc);
+}
+#else
+static int mmc_select_hs400es(struct mmc *mmc)
+{
+ return -ENOTSUPP;
+}
+#endif
+
#define for_each_supported_width(caps, ddr, ecbv) \
for (ecbv = ext_csd_bus_width;\
ecbv < ext_csd_bus_width + ARRAY_SIZE(ext_csd_bus_width);\
mmc_dump_capabilities("host", mmc->host_caps);
#endif
+ if (mmc_host_is_spi(mmc)) {
+ mmc_set_bus_width(mmc, 1);
+ mmc_select_mode(mmc, MMC_LEGACY);
+ mmc_set_clock(mmc, mmc->tran_speed, MMC_CLK_ENABLE);
+ return 0;
+ }
+
/* Restrict card's capabilities by what the host can do */
card_caps &= mmc->host_caps;
printf("Select HS400 failed %d\n", err);
goto error;
}
+ } else if (mwt->mode == MMC_HS_400_ES) {
+ err = mmc_select_hs400es(mmc);
+ if (err) {
+ printf("Select HS400ES failed %d\n",
+ err);
+ goto error;
+ }
} else {
/* configure the bus speed (card) */
err = mmc_set_card_speed(mmc, mwt->mode, false);
part_completed = !!(ext_csd[EXT_CSD_PARTITION_SETTING] &
EXT_CSD_PARTITION_SETTING_COMPLETED);
+ mmc->part_switch_time = ext_csd[EXT_CSD_PART_SWITCH_TIME];
+ /* Some eMMC set the value too low so set a minimum */
+ if (mmc->part_switch_time < MMC_MIN_PART_SWITCH_TIME && mmc->part_switch_time)
+ mmc->part_switch_time = MMC_MIN_PART_SWITCH_TIME;
+
/* store the partition info of emmc */
mmc->part_support = ext_csd[EXT_CSD_PARTITIONING_SUPPORT];
if ((ext_csd[EXT_CSD_PARTITIONING_SUPPORT] & PART_SUPPORT) ||
bdesc->lba = lldiv(mmc->capacity, mmc->read_bl_len);
#if !defined(CONFIG_SPL_BUILD) || \
(defined(CONFIG_SPL_LIBCOMMON_SUPPORT) && \
- !defined(CONFIG_USE_TINY_PRINTF))
+ !CONFIG_IS_ENABLED(USE_TINY_PRINTF))
sprintf(bdesc->vendor, "Man %06x Snr %04x%04x",
mmc->cid[0] >> 24, (mmc->cid[2] & 0xffff),
(mmc->cid[3] >> 16) & 0xffff);
MMC_CAP(MMC_LEGACY) | MMC_MODE_1BIT;
#if !defined(CONFIG_MMC_BROKEN_CD)
- /* we pretend there's no card when init is NULL */
no_card = mmc_getcd(mmc) == 0;
#else
no_card = 0;
#endif
#if !CONFIG_IS_ENABLED(DM_MMC)
+ /* we pretend there's no card when init is NULL */
no_card = no_card || (mmc->cfg->ops->init == NULL);
#endif
if (no_card) {