power: twl6030: Clear VUSB_IN_PMID bit on USB device setup
When booting from USB, the bootrom sets the VUSB_IN_PMID bit of the MISC2
register of the TWL6030. However, U-Boot sets the VUSB_IN_VSYS bit to enable
VBUS input. As both bits are contradictory, enabling both disables the input,
according to the TWL6030 TRM.
Thus, we need to clear the VUSB_IN_PMID bit in case of an USB boot (which could
just as well be a memory boot after USB timed out).
Signed-off-by: Paul Kocialkowski <contact@paulk.fr>
diff --git a/drivers/power/twl6030.c b/drivers/power/twl6030.c
index df43cca..c6d06f1 100644
--- a/drivers/power/twl6030.c
+++ b/drivers/power/twl6030.c
@@ -259,6 +259,7 @@
/* Select the input supply for VUSB regulator */
twl6030_i2c_read_u8(TWL6030_CHIP_PM, TWL6030_MISC2, &value);
value |= TWL6030_MISC2_VUSB_IN_VSYS;
+ value &= ~TWL6030_MISC2_VUSB_IN_PMID;
twl6030_i2c_write_u8(TWL6030_CHIP_PM, TWL6030_MISC2, value);
}
#endif