[BUG] Raxda Rock Pi 4A serial console output stops prematurely

[Heinrich Schuchardt]

Hello Jagan, hello Heiko,

When testing U-Boot origin/master on my Raxda Rock Pi 4A serial console 
output stops after "PMIC:  RK808". The same can be observed with v2025.01.

The serial console works as expected if I disable CONFIG_ROCKCHIP_IODOMAIN.

The problem seems to be specifically related to the bt656-supply. 
Removing the line below also fixes serial console output:

diff --git a/drivers/misc/rockchip-io-domain.c 
b/drivers/misc/rockchip-io-domain.c
index a0573c52193..b0d78f2d4b4 100644
--- a/drivers/misc/rockchip-io-domain.c
+++ b/drivers/misc/rockchip-io-domain.c
@@ -239,7 +239,7 @@ static const struct rockchip_iodomain_soc_data 
soc_data_rk3328 = {
 static const struct rockchip_iodomain_soc_data soc_data_rk3399 = {
        .grf_offset = 0xe640,
        .supply_names = {
-               "bt656-supply",         /* APIO2_VDD */

Best regards

Heinrich