* [RFC 1/3] i2c: document binding for multi-master case
[not found] <1450291460-10514-1-git-send-email-wsa@the-dreams.de>
@ 2015-12-16 18:44 ` Wolfram Sang
2015-12-19 4:18 ` Rob Herring
0 siblings, 1 reply; 2+ messages in thread
From: Wolfram Sang @ 2015-12-16 18:44 UTC (permalink / raw)
To: linux-i2c
Cc: linux-sh, Magnus Damm, Simon Horman, Laurent Pinchart,
Geert Uytterhoeven, Wolfram Sang, linux-pm, devicetree
From: Wolfram Sang <wsa+renesas@sang-engineering.com>
We need this binding because some I2C master drivers will need to adapt
their PM settings for the arbitration circuitry. I skipped the "i2c-"
prefix because I can imagine to be useful outside of i2c.
Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: devicetree@vger.kernel.org
---
Documentation/devicetree/bindings/i2c/i2c.txt | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/Documentation/devicetree/bindings/i2c/i2c.txt b/Documentation/devicetree/bindings/i2c/i2c.txt
index a00219f5ee0733..c8d977ed847f3c 100644
--- a/Documentation/devicetree/bindings/i2c/i2c.txt
+++ b/Documentation/devicetree/bindings/i2c/i2c.txt
@@ -54,6 +54,11 @@ wants to support one of the below features, it should adapt the bindings below.
"irq" and "wakeup" names are recognized by I2C core, other names are
left to individual drivers.
+- multi-master
+ states that there is another master active on this bus. The OS can use
+ this information to adapt power management to keep the arbitration awake
+ all the time, for example.
+
- wakeup-source
device can be used as a wakeup source.
--
2.1.4
^ permalink raw reply related [flat|nested] 2+ messages in thread
* Re: [RFC 1/3] i2c: document binding for multi-master case
2015-12-16 18:44 ` [RFC 1/3] i2c: document binding for multi-master case Wolfram Sang
@ 2015-12-19 4:18 ` Rob Herring
0 siblings, 0 replies; 2+ messages in thread
From: Rob Herring @ 2015-12-19 4:18 UTC (permalink / raw)
To: Wolfram Sang
Cc: linux-i2c, linux-sh, Magnus Damm, Simon Horman, Laurent Pinchart,
Geert Uytterhoeven, linux-pm, devicetree
On Wed, Dec 16, 2015 at 07:44:18PM +0100, Wolfram Sang wrote:
> From: Wolfram Sang <wsa+renesas@sang-engineering.com>
>
> We need this binding because some I2C master drivers will need to adapt
> their PM settings for the arbitration circuitry. I skipped the "i2c-"
> prefix because I can imagine to be useful outside of i2c.
>
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> Cc: devicetree@vger.kernel.org
> ---
> Documentation/devicetree/bindings/i2c/i2c.txt | 5 +++++
> 1 file changed, 5 insertions(+)
Acked-by: Rob Herring <robh@kernel.org>
^ permalink raw reply [flat|nested] 2+ messages in thread
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2015-12-19 4:18 ` Rob Herring
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