rockchip: io-domain: Add debug logging for regulators during probe

Log the value of the regulators during initialization of the IO-domain
driver to aid in debugging GPIO voltage configuration problems.

Signed-off-by: Justin Klaassen <justin@tidylabs.net>
Reviewed-by: Quentin Schulz <quentin.schulz@cherry.de>
Reviewed-by: Kever Yang <kever.yang@rock-chips.com>

diff --git a/drivers/misc/rockchip-io-domain.c b/drivers/misc/rockchip-io-domain.c
index 025b604..a0573c5 100644 (file)
--- a/drivers/misc/rockchip-io-domain.c
+++ b/drivers/misc/rockchip-io-domain.c
@@ -344,8 +344,10 @@ static int rockchip_iodomain_probe(struct udevice *dev)
                        continue;
 
                ret = device_get_supply_regulator(dev, supply_name, &reg);
-               if (ret)
+               if (ret) {
+                       dev_dbg(dev, "%s: Regulator not found\n", supply_name);
                        continue;
+               }
 
                ret = regulator_autoset(reg);
                if (ret && ret != -EALREADY && ret != -EMEDIUMTYPE &&
@@ -353,6 +355,7 @@ static int rockchip_iodomain_probe(struct udevice *dev)
                        continue;
 
                uV = regulator_get_value(reg);
+               dev_dbg(dev, "%s: Regulator %s at %d uV\n", supply_name, reg->name, uV);
                if (uV <= 0)
                        continue;