commit 3ae6d41fb5e4b3a24c3c46a1e4154ad7e9509f9a
author Justin Klaassen <justin@tidylabs.net> Fri May 23 16:53:37 2025 +0000
committer Kever Yang <kever.yang@rock-chips.com> Fri Jun 06 17:21:54 2025 +0800
tree 6823e6518f494924d86763a434c31ae12d9f69f2
parent 34c89795814bd6b1da23cc4064a76c734e2635a4

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>

drivers/misc/rockchip-io-domain.c

diff --git a/drivers/misc/rockchip-io-domain.c b/drivers/misc/rockchip-io-domain.c
index 025b604..a0573c5 100644
--- a/drivers/misc/rockchip-io-domain.c
+++ b/drivers/misc/rockchip-io-domain.c
@@ -344,8 +344,10 @@
 			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 @@
 			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;