netdev - Re: [net-next v6 2/4] net: wwan: t7xx: Add sysfs attribute for device state machine

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Message-ID:
 <MEYP282MB26971144401D483B2C947180BB7C2@MEYP282MB2697.AUSP282.PROD.OUTLOOK.COM>
Date: Wed, 31 Jan 2024 22:06:34 +0800
From: Jinjian Song <songjinjian@...mail.com>
To: pabeni@...hat.com,
	Jinjian Song <songjinjian@...mail.com>,
	netdev@...r.kernel.org
Cc: chandrashekar.devegowda@...el.com,
	chiranjeevi.rapolu@...ux.intel.com,
	danielwinkler@...gle.com,
	davem@...emloft.net,
	edumazet@...gle.com,
	felix.yan@...ocom.com,
	haijun.liu@...iatek.com,
	jinjian.song@...ocom.com,
	joey.zhao@...ocom.com,
	johannes@...solutions.net,
	kuba@...nel.org,
	linux-kernel@...r.kernel.com,
	liuqf@...ocom.com,
	loic.poulain@...aro.org,
	m.chetan.kumar@...ux.intel.com,
	nmarupaka@...gle.com,
	ricardo.martinez@...ux.intel.com,
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	vsankar@...ovo.com
Subject: Re: [net-next v6 2/4] net: wwan: t7xx: Add sysfs attribute for device state machine

From: Paolo Abeni <pabeni@...hat.com>

On Thu, 2024-01-25 at 01:00 +0800, Jinjian Song wrote:
>> From: Jinjian Song <jinjian.song@...ocom.com>
>> 
>> Add support for userspace to get/set the device mode,
>> e.g., reset/ready/fastboot mode.
>> 
>> Signed-off-by: Jinjian Song <jinjian.song@...ocom.com>
>
>It would be nice to add a reference to the fastboot documentation and a
>more functional description of what can be achieved using this new
>interface
>

Hi Paolo,

Let me do that.
By the way, Add to the commit info or the t7xx.rst document?

I want add the fastboot document link(https://android.googlesource.com/platform/system/core/+/refs/heads/main/fastboot/README.md)

I want add the functional description use this sysfs t7xx_mode
e.g.:
1.query the device state mode (READY, RESET, FASTBOOT_DL_MODE..).
cat /sys/bus/pci/devices/${bdf}/t7xx_mode
2.set the device state（cold reset, switch to fastboot mode).
echo RESET > /sys/bus/pci/devices/${bdf}/t7xx_mode

is that fine?

Thanks.

Best Regards,
Jinjian