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
智能運算專案
T: +886-3-5786005 ext.2590
edwin.chiu@sunplus.com
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-----Original Message-----
From: Sudeep Holla <redacted>
Sent: Monday, December 20, 2021 8:11 PM
To: Edwin Chiu <redacted>
Cc: robh+dt@kernel.org; Edwin Chiu 邱垂峰 <redacted>; devicetree@vger.kernel.org;
linux-kernel@vger.kernel.org; rafael@kernel.org; Sudeep Holla [off-list ref];
daniel.lezcano@linaro.org; linux-pm@vger.kernel.org
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:

quoted

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