[PATCH] gpio-f7188x: Add support for NCT6126D version B

[Paul Louvel]

The Nuvoton NCT6126D Super-I/O is available in two hardware revisions.
According to the manufacturer datasheet revision 2.4, version A reports
chip ID 0xD283, while version B reports chip ID 0xD284.

The driver currently only recognizes only the version A ID. Version B
only contains hardware fixes unrelated to the GPIO functionality, so it
can be supported by simply adding its chip ID without any other driver
changes.

Fixes: 3002b8642f01 ("gpio-f7188x: fix chip name and pin count on Nuvoton chip")
Cc: stable@xxxxxxxxxxxxxxx

Signed-off-by: Paul Louvel <paul.louvel@xxxxxxxxxxx>
---
 drivers/gpio/gpio-f7188x.c | 6 ++++--
 1 file changed, 4 insertions(+), 2 deletions(-)

diff --git a/drivers/gpio/gpio-f7188x.c b/drivers/gpio/gpio-f7188x.c
index 4d5b927ad70f..fb007b978729 100644
--- a/drivers/gpio/gpio-f7188x.c
+++ b/drivers/gpio/gpio-f7188x.c
@@ -48,7 +48,8 @@
 /*
  * Nuvoton devices.
  */
-#define SIO_NCT6126D_ID		0xD283  /* NCT6126D chipset ID */
+#define SIO_NCT6126D_VER_A_ID		0xD283  /* NCT6126D version A chipset ID */
+#define SIO_NCT6126D_VER_B_ID		0xD284  /* NCT6126D version B chipset ID */
 
 #define SIO_LD_GPIO_NUVOTON	0x07	/* GPIO logical device */
 
@@ -564,7 +565,8 @@ static int __init f7188x_find(int addr, struct f7188x_sio *sio)
 	case SIO_F81865_ID:
 		sio->type = f81865;
 		break;
-	case SIO_NCT6126D_ID:
+	case SIO_NCT6126D_VER_A_ID:
+	case SIO_NCT6126D_VER_B_ID:
 		sio->device = SIO_LD_GPIO_NUVOTON;
 		sio->type = nct6126d;
 		break;

---
base-commit: 028ef9c96e96197026887c0f092424679298aae8
change-id: 20260629-gpio-f7188x-nct6126d-version-b-a83cd56689b9

Best regards,
--  
Paul Louvel, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com