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drm/panthor: attach the driver's multiple power domains

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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>
Suggested-by: Steven Price <steven.price@arm.com>
Signed-off-by: Prabhu Sundararaj <prabhu.sundararaj@nxp.com>
Signed-off-by: Rain Yang <jiyu.yang@nxp.com>
Reviewed-by: Liviu Dudau <liviu.dudau@arm.com>
Link: https://patch.msgid.link/20251022092604.181752-1-jiyu.yang@oss.nxp.com
Signed-off-by: Liviu Dudau <liviu.dudau@arm.com>
This commit is contained in:
Rain Yang 2025-10-22 17:26:04 +08:00 committed by Liviu Dudau
parent 98dd514344
commit 858a7e416b
1 changed files with 16 additions and 0 deletions
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16
drivers/gpu/drm/panthor/panthor_device.c
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@ -66,6 +66,16 @@ static int panthor_clk_init(struct panthor_device *ptdev)
return 0;
}
static int panthor_init_power(struct device *dev)
{
struct dev_pm_domain_list *pd_list = NULL;
if (dev->pm_domain)
return 0;
return devm_pm_domain_attach_list(dev, NULL, &pd_list);
}
void panthor_device_unplug(struct panthor_device *ptdev)
{
/* This function can be called from two different path: the reset work
@ -222,6 +232,12 @@ int panthor_device_init(struct panthor_device *ptdev)
if (ret)
return ret;
ret = panthor_init_power(ptdev->base.dev);
if (ret < 0) {
drm_err(&ptdev->base, "init power domains failed, ret=%d", ret);
return ret;
}
ret = panthor_devfreq_init(ptdev);
if (ret)
return ret;