Messages in this thread | | | From | Edwin Chiu 邱垂峰 <> | Subject | RE: [PATCH v2 2/2] cpuidle:sunplus:create cpuidle driver for sunplus sp7021 | Date | Tue, 28 Dec 2021 08:45:21 +0000 |
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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 300 新竹科學園區創新一路19號
> -----Original Message----- > From: Sudeep Holla <sudeep.holla@arm.com> > Sent: Monday, December 20, 2021 8:11 PM > To: Edwin Chiu <edwinchiu0505tw@gmail.com> > Cc: robh+dt@kernel.org; Edwin Chiu 邱垂峰 <edwin.chiu@sunplus.com>; devicetree@vger.kernel.org; > linux-kernel@vger.kernel.org; rafael@kernel.org; Sudeep Holla <sudeep.holla@arm.com>; > 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: > > 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
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