[PATCH v4 2/2] hwmon: (pmbus/isl68137) Add support for RAA229621

[Chiang Brian]

The RAA229621 is a digital dual output multiphase
(X+Y <= 8) PWM controller designed to be compliant
with AMD SVI3 specifications, targeting
VDDCR_CPU and VDDCR_SOC rails.
Add support for it to the isl68137 driver.

this patch depends on patch:
dt-bindings: hwmon: (pmbus/isl68137) Add RAA229621 support

Signed-off-by: Chiang Brian <chiang.brian@xxxxxxxxxxxx>

---
v3 -> v4:
- Add Changelog
- Remove unnecessary "From" tag
- Link to v3: https://lore.kernel.org/all/20250303083537.3312250-1-chiang.brian@xxxxxxxxxxxxxxxxxxxxxxxxxxxxxxxx/

v2 -> v3:
- Fix the corrupted patch by sending plain text email
- Link to v2: https://lore.kernel.org/all/CAJCfHmWJ9N1R8x6ikU02_RYq9ieq6yWY7CGdfvc4hRqHnX5szg@xxxxxxxxxxxxxx/

v1 -> v2:
- Modify subject and description to meet requirements
- Remove the override of isl68137_probe
- Add the of_match between raa229621 and raa_dmpvr2_2rail
- Link to v1: https://lore.kernel.org/all/CAJCfHmXm-fPD70uN-mNJdJkzf9B526y8p=Jh5E+W5cwJ0NVhEQ@xxxxxxxxxxxxxx/

 drivers/hwmon/pmbus/isl68137.c | 3 +++
 1 file changed, 3 insertions(+)

diff --git a/drivers/hwmon/pmbus/isl68137.c b/drivers/hwmon/pmbus/isl68137.c
index 2af921039309..c52c55d2e7f4 100644
--- a/drivers/hwmon/pmbus/isl68137.c
+++ b/drivers/hwmon/pmbus/isl68137.c
@@ -63,6 +63,7 @@ enum chips {
 	raa228228,
 	raa229001,
 	raa229004,
+	raa229621,
 };
 
 enum variants {
@@ -465,6 +466,7 @@ static const struct i2c_device_id raa_dmpvr_id[] = {
 	{"raa228228", raa_dmpvr2_2rail_nontc},
 	{"raa229001", raa_dmpvr2_2rail},
 	{"raa229004", raa_dmpvr2_2rail},
+	{"raa229621", raa_dmpvr2_2rail},
 	{}
 };
 
@@ -512,6 +514,7 @@ static const struct of_device_id isl68137_of_match[] = {
 	{ .compatible = "renesas,raa228228", .data = (void *)raa_dmpvr2_2rail_nontc },
 	{ .compatible = "renesas,raa229001", .data = (void *)raa_dmpvr2_2rail },
 	{ .compatible = "renesas,raa229004", .data = (void *)raa_dmpvr2_2rail },
+	{ .compatible = "renesas,raa229621", .data = (void *)raa_dmpvr2_2rail },
 	{ },
 };
 
-- 
2.43.0