From: Wolfram Sang <wsa@the-dreams.de>
To: linux-i2c@vger.kernel.org
Cc: linux-renesas-soc@vger.kernel.org,
Wolfram Sang <wsa+renesas@sang-engineering.com>,
Ben Hutchings <ben.hutchings@codethink.co.uk>
Subject: [PATCH] i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes
Date: Sun, 3 Apr 2016 16:42:16 +0200 [thread overview]
Message-ID: <1459694536-23144-1-git-send-email-wsa@the-dreams.de> (raw)
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
Update the docs according to the recent code changes, too.
Fixes: c0c508a418f9da ("i2c: mux: demux-pinctrl: Clean up sysfs attributes")
Cc: Ben Hutchings <ben.hutchings@codethink.co.uk>
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
---
.../ABI/testing/sysfs-platform-i2c-demux-pinctrl | 29 +++++++++-------------
1 file changed, 12 insertions(+), 17 deletions(-)
diff --git a/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl b/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl
index 7ac7d7262bb718..3c3514815cd53b 100644
--- a/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl
+++ b/Documentation/ABI/testing/sysfs-platform-i2c-demux-pinctrl
@@ -1,23 +1,18 @@
-What: /sys/devices/platform/<i2c-demux-name>/cur_master
+What: /sys/devices/platform/<i2c-demux-name>/available_masters
Date: January 2016
KernelVersion: 4.6
Contact: Wolfram Sang <wsa@the-dreams.de>
Description:
+ Reading the file will give you a list of masters which can be
+ selected for a demultiplexed bus. The format is
+ "<index>:<name>". Example from a Renesas Lager board:
-This file selects the active I2C master for a demultiplexed bus.
+ 0:/i2c@e6500000 1:/i2c@e6508000
-Write 0 there for the first master, 1 for the second etc. Reading the file will
-give you a list with the active master marked. Example from a Renesas Lager
-board:
-
-root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
-* 0 - /i2c@9
- 1 - /i2c@e6520000
- 2 - /i2c@e6530000
-
-root@Lager:~# echo 2 > /sys/devices/platform/i2c@8/cur_master
-
-root@Lager:~# cat /sys/devices/platform/i2c@8/cur_master
- 0 - /i2c@9
- 1 - /i2c@e6520000
-* 2 - /i2c@e6530000
+What: /sys/devices/platform/<i2c-demux-name>/current_master
+Date: January 2016
+KernelVersion: 4.6
+Contact: Wolfram Sang <wsa@the-dreams.de>
+Description:
+ This file selects/shows the active I2C master for a demultiplexed
+ bus. It uses the <index> value from the file 'available_masters'.
--
2.7.0
next reply other threads:[~2016-04-03 14:42 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-04-03 14:42 Wolfram Sang [this message]
2016-04-03 22:13 ` [PATCH] i2c: mux: demux-pinctrl: Update docs to new sysfs-attributes Peter Rosin
2016-04-04 10:46 ` Wolfram Sang
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