mmc: fsl_esdhc_imx: Handle the "broken-cd" property
When no GPIO is used to read the card detect status the following
error is seen:
MMC: FSL_SDHC: 0, FSL_SDHC: 1
Loading Environment from MMC... MMC: no card present
*** Warning - No block device, using default environment
Fix it by handling the "broken-cd" property in the same way
that drivers/mmc/sdhci.c does, which considers that the SD card
is present when the "broken-cd" property is passed.
Tested on a imx6ul-evk board.
Signed-off-by: Fabio Estevam <festevam@gmail.com>
Reviewed-by: Stefano Babic <sbabic@denx.de>
diff --git a/drivers/mmc/fsl_esdhc_imx.c b/drivers/mmc/fsl_esdhc_imx.c
index f7b754b..a698184 100644
--- a/drivers/mmc/fsl_esdhc_imx.c
+++ b/drivers/mmc/fsl_esdhc_imx.c
@@ -115,6 +115,7 @@
* Following is used when Driver Model is enabled for MMC
* @dev: pointer for the device
* @non_removable: 0: removable; 1: non-removable
+ * @broken_cd: 0: use GPIO for card detect; 1: Do not use GPIO for card detect
* @wp_enable: 1: enable checking wp; 0: no check
* @vs18_enable: 1: use 1.8V voltage; 0: use 3.3V
* @flags: ESDHC_FLAG_xx in include/fsl_esdhc_imx.h
@@ -138,6 +139,7 @@
#endif
struct udevice *dev;
int non_removable;
+ int broken_cd;
int wp_enable;
int vs18_enable;
u32 flags;
@@ -1093,6 +1095,9 @@
#if CONFIG_IS_ENABLED(DM_MMC)
if (priv->non_removable)
return 1;
+
+ if (priv->broken_cd)
+ return 1;
#if CONFIG_IS_ENABLED(DM_GPIO)
if (dm_gpio_is_valid(&priv->cd_gpio))
return dm_gpio_get_value(&priv->cd_gpio);
@@ -1451,6 +1456,9 @@
ESDHC_STROBE_DLL_CTRL_SLV_DLY_TARGET_DEFAULT);
priv->strobe_dll_delay_target = val;
+ if (dev_read_bool(dev, "broken-cd"))
+ priv->broken_cd = 1;
+
if (dev_read_bool(dev, "non-removable")) {
priv->non_removable = 1;
} else {