diff options
Diffstat (limited to 'drivers/mmc/host/renesas_sdhi_core.c')
| -rw-r--r-- | drivers/mmc/host/renesas_sdhi_core.c | 37 |
1 files changed, 18 insertions, 19 deletions
diff --git a/drivers/mmc/host/renesas_sdhi_core.c b/drivers/mmc/host/renesas_sdhi_core.c index ae689bf54686..387f2a4f693a 100644 --- a/drivers/mmc/host/renesas_sdhi_core.c +++ b/drivers/mmc/host/renesas_sdhi_core.c @@ -51,9 +51,6 @@ #define HOST_MODE_GEN3_32BIT (HOST_MODE_GEN3_WMODE | HOST_MODE_GEN3_BUSWIDTH) #define HOST_MODE_GEN3_64BIT 0 -#define CTL_SDIF_MODE 0xe6 -#define SDIF_MODE_HS400 BIT(0) - #define SDHI_VER_GEN2_SDR50 0x490c #define SDHI_VER_RZ_A1 0x820b /* very old datasheets said 0x490c for SDR104, too. They are wrong! */ @@ -550,23 +547,25 @@ static void renesas_sdhi_scc_reset(struct tmio_mmc_host *host, struct renesas_sd } /* only populated for TMIO_MMC_MIN_RCAR2 */ -static void renesas_sdhi_reset(struct tmio_mmc_host *host) +static void renesas_sdhi_reset(struct tmio_mmc_host *host, bool preserve) { struct renesas_sdhi *priv = host_to_priv(host); int ret; u16 val; - if (priv->rstc) { - reset_control_reset(priv->rstc); - /* Unknown why but without polling reset status, it will hang */ - read_poll_timeout(reset_control_status, ret, ret == 0, 1, 100, - false, priv->rstc); - /* At least SDHI_VER_GEN2_SDR50 needs manual release of reset */ - sd_ctrl_write16(host, CTL_RESET_SD, 0x0001); - priv->needs_adjust_hs400 = false; - renesas_sdhi_set_clock(host, host->clk_cache); - } else if (priv->scc_ctl) { - renesas_sdhi_scc_reset(host, priv); + if (!preserve) { + if (priv->rstc) { + reset_control_reset(priv->rstc); + /* Unknown why but without polling reset status, it will hang */ + read_poll_timeout(reset_control_status, ret, ret == 0, 1, 100, + false, priv->rstc); + /* At least SDHI_VER_GEN2_SDR50 needs manual release of reset */ + sd_ctrl_write16(host, CTL_RESET_SD, 0x0001); + priv->needs_adjust_hs400 = false; + renesas_sdhi_set_clock(host, host->clk_cache); + } else if (priv->scc_ctl) { + renesas_sdhi_scc_reset(host, priv); + } } if (sd_ctrl_read16(host, CTL_VERSION) >= SDHI_VER_GEN3_SD) { @@ -925,6 +924,10 @@ int renesas_sdhi_probe(struct platform_device *pdev, if (IS_ERR(priv->clk_cd)) priv->clk_cd = NULL; + priv->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL); + if (IS_ERR(priv->rstc)) + return PTR_ERR(priv->rstc); + priv->pinctrl = devm_pinctrl_get(&pdev->dev); if (!IS_ERR(priv->pinctrl)) { priv->pins_default = pinctrl_lookup_state(priv->pinctrl, @@ -1013,10 +1016,6 @@ int renesas_sdhi_probe(struct platform_device *pdev, if (ret) goto efree; - priv->rstc = devm_reset_control_get_optional_exclusive(&pdev->dev, NULL); - if (IS_ERR(priv->rstc)) - return PTR_ERR(priv->rstc); - ver = sd_ctrl_read16(host, CTL_VERSION); /* GEN2_SDR104 is first known SDHI to use 32bit block count */ if (ver < SDHI_VER_GEN2_SDR104 && mmc_data->max_blk_count > U16_MAX) |