linux-kernel - Re: [PATCHv1 5/6] firmware: rsu: document sysfs interface

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Message-ID: <20190425202827.GD22307@kroah.com>
Date:   Thu, 25 Apr 2019 22:28:27 +0200
From:   Greg KH <gregkh@...uxfoundation.org>
To:     richard.gong@...ux.intel.com
Cc:     robh+dt@...nel.org, mark.rutland@....com, dinguyen@...nel.org,
        atull@...nel.org, linux-kernel@...r.kernel.org,
        devicetree@...r.kernel.org, Richard Gong <richard.gong@...el.com>
Subject: Re: [PATCHv1 5/6] firmware: rsu: document sysfs interface

On Tue, Apr 09, 2019 at 01:46:01PM -0500, richard.gong@...ux.intel.com wrote:
> From: Richard Gong <richard.gong@...el.com>
> 
> Describe Intel Stratix10 Remote System Update (RSU) device attributes
> 
> Signed-off-by: Richard Gong <richard.gong@...el.com>
> Reviewed-by: Alan Tull <atull@...nel.org>
> ---
>  .../testing/sysfs-devices-platform-stratix10-rsu   | 78 ++++++++++++++++++++++
>  1 file changed, 78 insertions(+)
>  create mode 100644 Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
> 
> diff --git a/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
> new file mode 100644
> index 0000000..cb461ee
> --- /dev/null
> +++ b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
> @@ -0,0 +1,78 @@
> +		Intel Stratix10 Remote System Update (RSU) device attributes
> +
> +What:		/sys/devices/platform/soc:firmware:svc/soc:firmware:svc:rsu/current_image
> +Date:		April 2019
> +KernelVersion:	5.2
> +Contact:	Richard Gong <richard.gong@...el.com>
> +Description:
> +		(RO) the address of image currently running in flash.
> +
> +What:           /sys/devices/platform/soc:firmware:svc/soc:firmware:svc:rsu/fail_image
> +Date:           April 2019
> +KernelVersion:  5.2
> +Contact:        Richard Gong <richard.gong@...el.com>
> +Description:
> +		(RO) the address of failed image in flash.
> +
> +What:           /sys/devices/platform/soc:firmware:svc/soc:firmware:svc:rsu/state
> +Date:           April 2019
> +KernelVersion:  5.2
> +Contact:        Richard Gong <richard.gong@...el.com>
> +Description:
> +		(RO) the state of RSU system.
> +		The state field has two parts: major error code in upper 16 bits and minor error code
> +		in lower 16 bits.
> +		1. Major error code
> +			0xF001 -- bitstream error
> +			0xF002 -- hardware access failure
> +			0xF003 -- bitstream corruption
> +			0xF004 -- internal error
> +			0xF005 -- device error
> +			0xF006 -- HPS watchdog timeout
> +			0xF007 -- internal unknown error
> +		2: Minor error code
> +			Currently used only when major error is 0xF006 (HPS watchdog timeout), in which
> +		case the minor error code is the value reported by HPS to firmware through the RSU notify
> +		command before the watchdog timeout occurs.

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