mmc: fsl_esdhc: convert to CONFIG_FSL_ESDHC_VS33_NOT_SUPPORT

For eSDHC, power supply is through peripheral circuit.
Some eSDHC versions have value 0 of the bit but that
does not reflect the truth. 3.3V is common for SD/MMC,
and is supported for all boards with eSDHC in current
u-boot. So, make 3.3V is supported in default in code.
CONFIG_FSL_ESDHC_VS33_NOT_SUPPORT can be enabled if
future board does not support 3.3V.

This is also a fix-up for one previous patch, which converted
to use IS_ENABLED() for CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33
that is not a Kconfig option.

Fixes: 52faec31827e ("mmc: fsl_esdhc: replace most #ifdefs by IS_ENABLED()")
Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com>
Reviewed-by: Jaehoon Chung <jh80.chung@samsung.com>
Reviewed-by: Priyanka Jain <priyanka.jain@nxp.com>

diff --git a/drivers/mmc/Kconfig b/drivers/mmc/Kconfig
index 8901456..0909f50 100644 (file)
--- a/drivers/mmc/Kconfig
+++ b/drivers/mmc/Kconfig
@@ -798,6 +798,13 @@ config FSL_ESDHC_33V_IO_RELIABILITY_WORKAROUND
          This option assumes no hotplug, and u-boot has to make all the way to
          to linux to use 1.8v UHS-I speed mode if has card.
 
+config FSL_ESDHC_VS33_NOT_SUPPORT
+       bool "3.3V power supply not supported"
+       depends on FSL_ESDHC
+       help
+         For eSDHC, power supply is through peripheral circuit. 3.3V support is
+         common. Select this if 3.3V power supply not supported.
+
 config FSL_ESDHC_IMX
        bool "Freescale/NXP i.MX eSDHC controller support"
        help

diff --git a/drivers/mmc/fsl_esdhc.c b/drivers/mmc/fsl_esdhc.c
index 7501fdb..1d98fa6 100644 (file)
--- a/drivers/mmc/fsl_esdhc.c
+++ b/drivers/mmc/fsl_esdhc.c
@@ -1,7 +1,7 @@
 // SPDX-License-Identifier: GPL-2.0+
 /*
  * Copyright 2007, 2010-2011 Freescale Semiconductor, Inc
- * Copyright 2019-2020 NXP
+ * Copyright 2019-2021 NXP
  * Andy Fleming
  *
  * Based vaguely on the pxa mmc code:
@@ -795,10 +795,21 @@ static void fsl_esdhc_get_cfg_common(struct fsl_esdhc_priv *priv,
        u32 caps;
 
        caps = esdhc_read32(&regs->hostcapblt);
+
+       /*
+        * For eSDHC, power supply is through peripheral circuit. Some eSDHC
+        * versions have value 0 of the bit but that does not reflect the
+        * truth. 3.3V is common for SD/MMC, and is supported for all boards
+        * with eSDHC in current u-boot. So, make 3.3V is supported in
+        * default in code. CONFIG_FSL_ESDHC_VS33_NOT_SUPPORT can be enabled
+        * if future board does not support 3.3V.
+        */
+       caps |= HOSTCAPBLT_VS33;
+       if (IS_ENABLED(CONFIG_FSL_ESDHC_VS33_NOT_SUPPORT))
+               caps &= ~HOSTCAPBLT_VS33;
+
        if (IS_ENABLED(CONFIG_SYS_FSL_ERRATUM_ESDHC135))
                caps &= ~(HOSTCAPBLT_SRS | HOSTCAPBLT_VS18 | HOSTCAPBLT_VS30);
-       if (IS_ENABLED(CONFIG_SYS_FSL_MMC_HAS_CAPBLT_VS33))
-               caps |= HOSTCAPBLT_VS33;
        if (caps & HOSTCAPBLT_VS18)
                cfg->voltages |= MMC_VDD_165_195;
        if (caps & HOSTCAPBLT_VS30)