From mboxrd@z Thu Jan  1 00:00:00 1970
From: LW@KARO-electronics.de (=?utf-8?Q?Lothar_Wa=C3=9Fmann?=)
Date: Thu, 28 Jun 2012 07:22:14 +0200
Subject: [PATCH v2 2/2] net: flexcan: add transceiver switch gpios support
In-Reply-To: <1340853701-4488-3-git-send-email-shawn.guo@linaro.org>
References: <1340853701-4488-1-git-send-email-shawn.guo@linaro.org>
 <1340853701-4488-3-git-send-email-shawn.guo@linaro.org>
Message-ID: <20459.59910.783086.760997@ipc1.ka-ro>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Hi,

Shawn Guo writes:
> The flexcan driver has function pointer transceiver_switch defined in
> flexcan_platform_data for platform codes to hook up their transceiver
> switch implementation.  However this does not cope with device tree
> probe.
> 
> It's been observed that platforms mostly use gpios to control the
> switch of flexcan transceiver, like enable and standby.  The patch
> adds transceiver switch gpios support into flexcan driver, so that
> platforms booting from device tree can just define properties
> phy-enable-gpios and phy-standby-gpios to have flexcan driver control
> the gpios.
> 
> Signed-off-by: Shawn Guo <shawn.guo@linaro.org>
> ---
>  .../devicetree/bindings/net/can/fsl-flexcan.txt    |    2 +
>  drivers/net/can/flexcan.c                          |   62 ++++++++++++++++++++
>  2 files changed, 64 insertions(+), 0 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> index 8ff324e..e0dbac7 100644
> --- a/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> +++ b/Documentation/devicetree/bindings/net/can/fsl-flexcan.txt
> @@ -15,6 +15,8 @@ Required properties:
>  Optional properties:
>  
>  - clock-frequency : The oscillator frequency driving the flexcan device
> +- phy-enable-gpios : Specify the gpio used to enable phy
> +- phy-standby-gpios : Specify the gpio used to put phy into STANDBY mode
>  
Why the plural form 'gpios'? It's just one gpio.
s/gpios/gpio/ ?


Lothar Wa?mann
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