RE: [PATCH v2 2/2] cpuidle:sunplus:create cpuidle driver for sunplus sp7021

[Edwin Chiu 邱垂峰]

Hi Sudeep and Daniel:

Thanks your response.
My CPU is arm CA7 that is 32bits cpu.
If I directly used cpuidle-arm.c function with enable "Generic ARM/ARM64 CPU idle Driver",
the cpuidle driver mount fail with "unsupported enable-method property".

This is due to linux kernel no invoke CPUIDLE_METHOD_OF_DECLARE for arm 32bits cpu.
There have no define cpuidle_ops.init and cpuidle_ops.suspend function for arm 32bits cpu too.

So I create cpuidle-sunplus.c to execute my cpuidle function.
Please correct me if I got mistake.


邱垂峰 EdwinChiu
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> -----Original Message-----
> From: Sudeep Holla <sudeep.holla@xxxxxxx>
> Sent: Monday, December 20, 2021 8:11 PM
> To: Edwin Chiu <edwinchiu0505tw@xxxxxxxxx>
> Cc: robh+dt@xxxxxxxxxx; Edwin Chiu 邱垂峰 <edwin.chiu@xxxxxxxxxxx>; devicetree@xxxxxxxxxxxxxxx;
> linux-kernel@xxxxxxxxxxxxxxx; rafael@xxxxxxxxxx; Sudeep Holla <sudeep.holla@xxxxxxx>;
> daniel.lezcano@xxxxxxxxxx; linux-pm@xxxxxxxxxxxxxxx
> Subject: Re: [PATCH v2 2/2] cpuidle:sunplus:create cpuidle driver for sunplus sp7021
> 
> On Mon, Dec 20, 2021 at 01:37:32PM +0800, Edwin Chiu wrote:
> > Create cpuidle driver for sunplus sp7021 chip
> >
> 
> Based on the driver here, I couldn't understand why you can't make use of existing cpuidle-arm.c driver
> 
> --
> Regards,
> Sudeep