diff options
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_core.c | 12 |
1 files changed, 12 insertions, 0 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index 45c015da2e757c..f087ac728e35b0 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -302,6 +302,18 @@ static int renesas_sdhi_select_tuning(struct tmio_mmc_host *host) sd_scc_write32(host, priv, SH_MOBILE_SDHI_SCC_RVSREQ, 0); /* + * When tuning CMD19 is issued twice for each tap, merge the + * result requiring the tap to be good in both runs before + * considering it for tuning selection. + */ + for (i = 0; i < host->tap_num * 2; i++) { + int offset = host->tap_num * (i < host->tap_num ? 1 : -1); + + if (!test_bit(i, host->taps)) + clear_bit(i + offset, host->taps); + } + + /* * Find the longest consecutive run of successful probes. If that * is more than SH_MOBILE_SDHI_MAX_TAP probes long then use the * center index as the tap. |