linux-kernel - Re: [PATCH v3 2/3] firmware: zynqmp: Add sysfs entry for runtime features

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Date:   Fri, 3 Dec 2021 10:25:21 +0100
From:   Greg KH <gregkh@...uxfoundation.org>
To:     Ronak Jain <ronak.jain@...inx.com>
Cc:     michal.simek@...inx.com, linux-kernel@...r.kernel.org,
        rajan.vaja@...inx.com, corbet@....net,
        linux-arm-kernel@...ts.infradead.org, arnd@...db.de,
        lakshmi.sai.krishna.potthuri@...inx.com
Subject: Re: [PATCH v3 2/3] firmware: zynqmp: Add sysfs entry for runtime
 features

On Fri, Dec 03, 2021 at 01:18:13AM -0800, Ronak Jain wrote:
> Create sysfs entry for runtime feature configuration. The support
>  is added for an over temperature and external watchdog feature.
> 
> The below listed files are used for runtime features configuration:
> /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_id
> /sys/devices/platform/firmware\:zynqmp-firmware/feature_config_value
> 
> In order to configure an over temperature or external watchdog
>  features, first the user need to select the valid config id and then
>  the user can configure the value for selected feature config id.
> 
> Signed-off-by: Ronak Jain <ronak.jain@...inx.com>

Ah, here's the documentation.

You should say so in the Subject line, and the changelog text is not
correct, this is a documentation update.


> ---
> Changes in v3:
> - None
> 
> Changes in v2:
> - Update commit message
> ---
>  .../ABI/stable/sysfs-driver-firmware-zynqmp   | 84 +++++++++++++++++++
>  1 file changed, 84 insertions(+)
> 
> diff --git a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> index f5724bb5b462..2fde354715a5 100644
> --- a/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> +++ b/Documentation/ABI/stable/sysfs-driver-firmware-zynqmp
> @@ -113,3 +113,87 @@ Description:
>  		    # echo 0 > /sys/devices/platform/firmware\:zynqmp-firmware/health_status
>  
>  Users:		Xilinx
> +
> +What:		/sys/devices/platform/firmware\:zynqmp-firmware/feature_config_*
> +Date:		Aug 2021
> +KernelVersion:	5.14

5.14?

Are these sysfs files already in the kernel tree?

And can you break this up into one entry per sysfs file?

One for the feature_config_id file and one for feature_config_value?

thanks,

greg k-h