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| author | Ashok Reddy Soma <ashok.reddy.soma@xilinx.com> | 2020-10-23 04:58:57 -0600 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2020-10-27 08:13:33 +0100 |
| commit | 7a49a16ec54e03ea6a383c1b97a78acc059c2df8 (patch) | |
| tree | 7cae6c5e9c0bf2b1ecb4aa613e0c26dbf886f614 /drivers/mmc/zynq_sdhci.c | |
| parent | 17fbb598f64bcc9612281d81e946fedbdc63781a (diff) | |
| download | u-boot-7a49a16ec54e03ea6a383c1b97a78acc059c2df8.zip u-boot-7a49a16ec54e03ea6a383c1b97a78acc059c2df8.tar.gz u-boot-7a49a16ec54e03ea6a383c1b97a78acc059c2df8.tar.bz2 | |
Revert "mmc: zynq: parse dt when probing"
This reverts commit 942b5fc03218d1c94468fc658e7dec65dabcc830.
This is partial revert of the above commit.
mmc_of_parse() is reading no-1-8-v from device tree and if set,
it is clearing the UHS speed capabilities of cfg->host_caps.
cfg->host_caps &= ~(UHS_CAPS | MMC_MODE_HS200 |
MMC_MODE_HS400 | MMC_MODE_HS400_ES);
This is still missing to clear UHS speeds like SDHCI_SUPPORT_SDR104,
SDHCI_SUPPORT_SDR50 and SDHCI_SUPPORT_DDR50.
Even if we clear the flags SDHCI_SUPPORT_XXX in mmc_of_parse(),
these speed flags are getting set again in cfg->host_caps in
sdhci_setup_cfg().
The reason for this is, SDHCI_SUPPORT_XXX flags are cleared
only if controller is not capable of supporting MMC_VDD_165_195 volts.
if (caps & SDHCI_CAN_VDD_180)
cfg->voltages |= MMC_VDD_165_195;
if (!(cfg->voltages & MMC_VDD_165_195))
caps_1 &= ~(SDHCI_SUPPORT_SDR104 | SDHCI_SUPPORT_SDR50 |
SDHCI_SUPPORT_DDR50);
It means "no-1-8-v", which is read from DT is not coming in to effect.
So it is better we keep the host quirks(SDHCI_QUIRK_NO_1_8_V) to
clear UHS speeds based on no-1-8-v from device tree.
Hence revert the functionality related to no-1-8-v only, rest is fine
in the patch.
Signed-off-by: Ashok Reddy Soma <ashok.reddy.soma@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Peng Fan <peng.fan@nxp.com>
Diffstat (limited to 'drivers/mmc/zynq_sdhci.c')
| -rw-r--r-- | drivers/mmc/zynq_sdhci.c | 5 |
1 files changed, 5 insertions, 0 deletions
diff --git a/drivers/mmc/zynq_sdhci.c b/drivers/mmc/zynq_sdhci.c index 775c17b..88e478e 100644 --- a/drivers/mmc/zynq_sdhci.c +++ b/drivers/mmc/zynq_sdhci.c @@ -28,6 +28,7 @@ struct arasan_sdhci_priv { struct sdhci_host *host; u8 deviceid; u8 bank; + u8 no_1p8; }; #if defined(CONFIG_ARCH_ZYNQMP) @@ -236,6 +237,9 @@ static int arasan_sdhci_probe(struct udevice *dev) host->quirks |= SDHCI_QUIRK_BROKEN_HISPD_MODE; #endif + if (priv->no_1p8) + host->quirks |= SDHCI_QUIRK_NO_1_8_V; + plat->cfg.f_max = CONFIG_ZYNQ_SDHCI_MAX_FREQ; ret = mmc_of_parse(dev, &plat->cfg); @@ -277,6 +281,7 @@ static int arasan_sdhci_ofdata_to_platdata(struct udevice *dev) priv->deviceid = dev_read_u32_default(dev, "xlnx,device_id", -1); priv->bank = dev_read_u32_default(dev, "xlnx,mio-bank", 0); + priv->no_1p8 = dev_read_bool(dev, "no-1-8-v"); return 0; } |