[PATCH v25 04/10] firmware: psci: Add support for PSCI auxiliary devices

[Shivendra Pratap]

On 9/21/2026 8:36 PM, Ulf Hansson wrote:
>> +++ b/drivers/firmware/psci/psci-devices.c
>> @@ -0,0 +1,41 @@
>> +// SPDX-License-Identifier: GPL-2.0-only
>> +/*
>> + * Copyright (c) Qualcomm Technologies, Inc. and/or its subsidiaries.
>> + */
>> +
>> +#include <linux/auxiliary_bus.h>
>> +#include <linux/init.h>
>> +#include <linux/of.h>
>> +#include <linux/platform_device.h>
>> +
>> +static int arm_psci_probe(struct platform_device *pdev)
>> +{
>> +       struct auxiliary_device *auxdev;
>> +
>> +       auxdev = __devm_auxiliary_device_create(&pdev->dev, "arm-psci",
>> +                                               "psci-cpuidle-domain", NULL, 0);
>> +       if (!auxdev)
>> +               return -ENOMEM;
>> +
>> +       return 0;
>> +}
>> +
>> +static const struct of_device_id arm_psci_of_match[] = {
>> +       { .compatible = "arm,psci-1.0" },
>> +       { }
>> +};
>> +
>> +static struct platform_driver arm_psci_driver = {
>> +       .probe = arm_psci_probe,
>> +       .driver = {
>> +               .name = "arm-psci",
>> +               .of_match_table = arm_psci_of_match,
>> +               .suppress_bind_attrs = true,
>> +       },
>> +};
>> +
>> +static int __init arm_psci_init(void)
>> +{
>> +       return platform_driver_register(&arm_psci_driver);
>> +}
>> +core_initcall(arm_psci_init);
> I think we should move this to arch_initcall().
> 
> To allow the platform driver to probe, the corresponding device node
> in DT needs to get populated, which happens at arch_initcall_sync().
> 
> That said, to be consistent, we should move the cpuidle-psci-domain.c
> from core_initcall to arch_initcall too.

Ack. Will update it to arch_initcall at both, cpuidle-psci-domain.c and 
here.

thanks,
Shivendra