[PATCH] powerpc/44x: Set GPIO chip firmware node

[Rosen Penev]

The PPC4xx GPIO driver stopped assigning an explicit firmware node
to the gpio_chip when it moved away from of_mm_gpiochip_add_data().

Restore that association from the platform device so OF GPIO lookup
can match phandles to the registered gpiochip.

Tested on: Cisco MX60W. No more probe deferral.

Assisted-by: Codex:GPT-5.5
Fixes: 1044dbaf2a77 ("powerpc/44x: Change GPIO driver to a proper platform 
driver")
Signed-off-by: Rosen Penev <ros...@gmail.com>
---
 arch/powerpc/platforms/44x/gpio.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/powerpc/platforms/44x/gpio.c 
b/arch/powerpc/platforms/44x/gpio.c
index d5824b7747b3..4d5176aa6895 100644
--- a/arch/powerpc/platforms/44x/gpio.c
+++ b/arch/powerpc/platforms/44x/gpio.c
@@ -169,6 +169,8 @@ static int ppc4xx_gpio_probe(struct platform_device *ofdev)
 
        gc = &chip->gc;
 
+       gc->parent = dev;
+       gc->fwnode = dev_fwnode(dev);
        gc->base = -1;
        gc->ngpio = 32;
        gc->direction_input = ppc4xx_gpio_dir_in;
-- 
2.54.0