[PATCH v2] drm/panthor: attach the driver's multiple power domains

[Rain Yang <jiyu.yang@oss.nxp.com>]

From: Rain Yang <jiyu.yang@nxp.com>

Some platforms, such as i.MX95, utilize multiple power domains that need
to be attached explicitly. This patch ensures that the driver properly
attaches all available power domains using devm_pm_domain_attach_list().

Suggested-by: Boris Brezillon <boris.brezillon@collabora.com>
Signed-off-by: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
Signed-off-by: Rain Yang <jiyu.yang@nxp.com>
---
 drivers/gpu/drm/panthor/panthor_device.c | 7 +++++++
 1 file changed, 7 insertions(+)

diff --git a/drivers/gpu/drm/panthor/panthor_device.c b/drivers/gpu/drm/panthor/panthor_device.c
index f0b2da5b2b96..fbbc84e9efbe 100644
--- a/drivers/gpu/drm/panthor/panthor_device.c
+++ b/drivers/gpu/drm/panthor/panthor_device.c
@@ -167,6 +167,7 @@ static void panthor_device_free_page(struct drm_device *ddev, void *data)
 int panthor_device_init(struct panthor_device *ptdev)
 {
 	u32 *dummy_page_virt;
+	struct dev_pm_domain_list  *pd_list = NULL;
 	struct resource *res;
 	struct page *p;
 	int ret;
@@ -218,6 +219,12 @@ int panthor_device_init(struct panthor_device *ptdev)
 	if (ret)
 		return ret;
 
+	ret = devm_pm_domain_attach_list(ptdev->base.dev, NULL, &pd_list);
+	if (ret < 0) {
+		drm_err(&ptdev->base, "attach power domains failed, ret=%d", ret);
+		return ret;
+	}
+
 	ret = panthor_devfreq_init(ptdev);
 	if (ret)
 		return ret;
-- 
2.39.5