diff options
| author | Marek Vasut <marek.vasut@gmail.com> | 2019-11-23 13:36:18 +0100 |
|---|---|---|
| committer | Peng Fan <peng.fan@nxp.com> | 2019-11-27 16:56:46 +0800 |
| commit | 37c399066409f0923cbe45b49cf0a12c85afe4f4 (patch) | |
| tree | be538139a48ac7ede62dcf5227a3ba5784035646 /drivers | |
| parent | 0196a58a792f37d2c80ba6a50f52da15950937c9 (diff) | |
| download | u-boot-37c399066409f0923cbe45b49cf0a12c85afe4f4.zip u-boot-37c399066409f0923cbe45b49cf0a12c85afe4f4.tar.gz u-boot-37c399066409f0923cbe45b49cf0a12c85afe4f4.tar.bz2 | |
mmc: tmio: sdhi: Track SMPCMP valu in private data
Retain the SMPCMP value from last calibration in private data.
This will be later used for skipping bad taps.
Signed-off-by: Marek Vasut <marek.vasut+renesas@gmail.com>
Cc: Masahiro Yamada <yamada.masahiro@socionext.com>
Diffstat (limited to 'drivers')
| -rw-r--r-- | drivers/mmc/renesas-sdhi.c | 18 | ||||
| -rw-r--r-- | drivers/mmc/tmio-common.h | 1 |
2 files changed, 11 insertions, 8 deletions
diff --git a/drivers/mmc/renesas-sdhi.c b/drivers/mmc/renesas-sdhi.c index acc44e5..2f34173 100644 --- a/drivers/mmc/renesas-sdhi.c +++ b/drivers/mmc/renesas-sdhi.c @@ -289,7 +289,7 @@ static unsigned int renesas_sdhi_compare_scc_data(struct tmio_sd_priv *priv) } static int renesas_sdhi_select_tuning(struct tmio_sd_priv *priv, - unsigned int taps, unsigned int smpcmp) + unsigned int taps) { unsigned long tap_cnt; /* counter of tuning success */ unsigned long tap_start;/* start position of tuning success */ @@ -311,9 +311,9 @@ static int renesas_sdhi_select_tuning(struct tmio_sd_priv *priv, taps &= ~BIT(i % priv->tap_num); taps &= ~BIT((i % priv->tap_num) + priv->tap_num); } - if (!(smpcmp & BIT(i))) { - smpcmp &= ~BIT(i % priv->tap_num); - smpcmp &= ~BIT((i % priv->tap_num) + priv->tap_num); + if (!(priv->smpcmp & BIT(i))) { + priv->smpcmp &= ~BIT(i % priv->tap_num); + priv->smpcmp &= ~BIT((i % priv->tap_num) + priv->tap_num); } } @@ -355,7 +355,7 @@ static int renesas_sdhi_select_tuning(struct tmio_sd_priv *priv, tap_start = 0; tap_end = 0; for (i = 0; i < priv->tap_num * 2; i++) { - if (smpcmp & BIT(i)) + if (priv->smpcmp & BIT(i)) ntap++; else { if (ntap > match_cnt) { @@ -398,7 +398,7 @@ int renesas_sdhi_execute_tuning(struct udevice *dev, uint opcode) struct mmc_uclass_priv *upriv = dev_get_uclass_priv(dev); struct mmc *mmc = upriv->mmc; unsigned int tap_num; - unsigned int taps = 0, smpcmp = 0; + unsigned int taps = 0; int i, ret = 0; u32 caps; @@ -426,6 +426,8 @@ int renesas_sdhi_execute_tuning(struct udevice *dev, uint opcode) goto out; } + priv->smpcmp = 0; + /* Issue CMD19 twice for each tap */ for (i = 0; i < 2 * priv->tap_num; i++) { renesas_sdhi_prepare_tuning(priv, i % priv->tap_num); @@ -443,12 +445,12 @@ int renesas_sdhi_execute_tuning(struct udevice *dev, uint opcode) ret = renesas_sdhi_compare_scc_data(priv); if (ret == 0) - smpcmp |= BIT(i); + priv->smpcmp |= BIT(i); mdelay(1); } - ret = renesas_sdhi_select_tuning(priv, taps, smpcmp); + ret = renesas_sdhi_select_tuning(priv, taps); out: if (ret < 0) { diff --git a/drivers/mmc/tmio-common.h b/drivers/mmc/tmio-common.h index da89cc9..79f51d2 100644 --- a/drivers/mmc/tmio-common.h +++ b/drivers/mmc/tmio-common.h @@ -137,6 +137,7 @@ struct tmio_sd_priv { struct clk clk; #endif #if CONFIG_IS_ENABLED(RENESAS_SDHI) + unsigned int smpcmp; u8 tap_set; u8 tap_num; u8 nrtaps; |