linux-kernel - [PATCH 4/4] firmware: rsu: add device attributes to sysfs interface

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Date:   Mon, 15 Jun 2020 09:29:08 -0500
From:   richard.gong@...ux.intel.com
To:     gregkh@...uxfoundation.org
Cc:     linux-kernel@...r.kernel.org, dinguyen@...nel.org,
        richard.gong@...ux.intel.com, Richard Gong <richard.gong@...el.com>
Subject: [PATCH 4/4] firmware: rsu: add device attributes to sysfs interface

From: Richard Gong <richard.gong@...el.com>

Add the following device attributes to Intel Stratix10 Remote System
Update (RSU) sysfs interface:
	dcmf0
	dcmf1
	dcmf2
	dcmf3
	max_retry

Signed-off-by: Richard Gong <richard.gong@...el.com>
---
 .../testing/sysfs-devices-platform-stratix10-rsu   | 36 ++++++++++++++++++++++
 1 file changed, 36 insertions(+)

diff --git a/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
index ae9af98..a8daceb 100644
--- a/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
+++ b/Documentation/ABI/testing/sysfs-devices-platform-stratix10-rsu
@@ -126,3 +126,39 @@ Description:
 			1	no action
 			0	firmware record the notify code defined
 				in b[15:0].
+
+What:		/sys/devices/platform/stratix10-rsu.0/dcmf0
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	Richard Gong <richard.gong@...ux.intel.com>
+Description:
+		(RO) Decision firmware copy 0 version information.
+
+What:		/sys/devices/platform/stratix10-rsu.0/dcmf1
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	Richard Gong <richard.gong@...ux.intel.com>
+Description:
+		(RO) Decision firmware copy 1 version information.
+
+What:		/sys/devices/platform/stratix10-rsu.0/dcmf2
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	Richard Gong <richard.gong@...ux.intel.com>
+Description:
+		(RO) Decision firmware copy 2 version information.
+
+What:		/sys/devices/platform/stratix10-rsu.0/dcmf3
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	Richard Gong <richard.gong@...ux.intel.com>
+Description:
+		(RO) Decision firmware copy 3 version information.
+
+What:		/sys/devices/platform/stratix10-rsu.0/max_retry
+Date:		June 2020
+KernelVersion:	5.8
+Contact:	Richard Gong <richard.gong@...ux.intel.com>
+Description:
+		(RO) max retry parameter is stored in the firmware
+		decision IO section, as a byte located at offset 0x18c.
-- 
2.7.4