Re: [PATCH V2 01/10] Documentation: devicetree: input: additions for da9061 onkey driver

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On Wed, Oct 26, 2016 at 05:56:37PM +0100, Steve Twiss wrote:
> From: Steve Twiss <stwiss.opensource@xxxxxxxxxxx>
> 
> Add binding information for DA9061 onkey.
> 
> This patch updates the compatible string "dlg,da9061-onkey" to support
> DA9061, removes the reference to KEY_SLEEP (which the driver no longer
> supports) and fixes a typo in the example for DA9063.
> 
> It also adds two new examples, one for DA9062 and one for DA9061. The
> DA9061 examples uses a fall-back compatible string for the DA9062 onkey
> driver.
> 
> Signed-off-by: Steve Twiss <stwiss.opensource@xxxxxxxxxxx>
> 
> ---
> This patch applies against linux-next and v4.8
> 
> v1 -> v2
>  - Patch renamed from [PATCH V1 06/10] to [PATCH V2 01/10] -- these
>    changes were made to fix checkpatch warnings caused by the patch
>    set dependency order
>  - Typo s/ther/the/ in commit message
>  - Explanation about why KEY_SLEEP was removed (see below)
>  - Addition of DA9062 example
>  - Addition of a DA9061 example to follow the driver fall-back compatible
>    convention being applied for this device driver
> 
> Hi,
> 
> This patch depends on the acceptance of the main code for the onkey:
>   [PATCH V2 07/10] Input: da9061: onkey driver.

Just FYI, not really. While common practice is we take the whole series 
together bindings could come first without a driver.

> The device driver no longer supports KEY_SLEEP. It only supports
> KEY_POWER. This change was sent a while ago for the DA9063 ONKEY driver,
> but the docs were not updated.
> 
> Supporting KEY_SLEEP was not the general convention and the typical
> solution should have been for KEY_POWER to support both cases of suspend
> and S/W power off.

This info will be lost when applied. You should add it to the commit 
message.

> 
> There is also new binding examples for DA9062 and DA9061. Importantly,
> the Linux device driver changes for DA9061 were rejected because the
> DA9062 device driver can be reused. For this reason, the DA9061 example
> uses a fall-back compatible string.
> 
> Regards,
> Steve Twiss, Dialog Semiconductor Ltd.
> 
> 
>  .../devicetree/bindings/input/da9062-onkey.txt     | 39 +++++++++++++++-------
>  1 file changed, 27 insertions(+), 12 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/input/da9062-onkey.txt b/Documentation/devicetree/bindings/input/da9062-onkey.txt
> index ab0e048..e5a0469 100644
> --- a/Documentation/devicetree/bindings/input/da9062-onkey.txt
> +++ b/Documentation/devicetree/bindings/input/da9062-onkey.txt
> @@ -1,32 +1,47 @@
> -* Dialog DA9062/63 OnKey Module
> +* Dialog DA9061/62/63 OnKey Module
>  
> -This module is part of the DA9062/DA9063. For more details about entire
> -chips see Documentation/devicetree/bindings/mfd/da9062.txt and
> -Documentation/devicetree/bindings/mfd/da9063.txt
> +This module is part of the DA9061/DA9062/DA9063. For more details about entire
> +DA9062 and DA9061 chips see Documentation/devicetree/bindings/mfd/da9062.txt
> +For DA9063 see Documentation/devicetree/bindings/mfd/da9063.txt
>  
> -This module provides KEY_POWER, KEY_SLEEP and events.
> +This module provides the KEY_POWER event.
>  
>  Required properties:
>  
>  - compatible: should be one of:
> +	dlg,da9061-onkey

This needs to list the fallback too. It's below, but each line should be 
valid combinations of compatible strings.

>  	dlg,da9062-onkey
>  	dlg,da9063-onkey
>  
>  Optional properties:
>  
> -  - dlg,disable-key-power : Disable power-down using a long key-press. If this
> +- dlg,disable-key-power : Disable power-down using a long key-press. If this
>      entry exists the OnKey driver will remove support for the KEY_POWER key
> -    press. If this entry does not exist then by default the key-press
> -    triggered power down is enabled and the OnKey will support both KEY_POWER
> -    and KEY_SLEEP.
> +    press when triggered using a long press of the OnKey.
>  
> -Example:
> -
> -	pmic0: da9062@58 {
> +Example: DA9063
>  
> +	pmic0: da9063@58 {
>  		onkey {
>  			compatible = "dlg,da9063-onkey";
>  			dlg,disable-key-power;
>  		};
> +	};
> +
> +Example: DA9062
> +
> +	pmic0: da9062@58 {
> +		onkey {
> +			compatible = "dlg,da9062-onkey";
> +			dlg,disable-key-power;
> +		};
> +	};
> +
> +Example: DA9061 using a fall-back compatible for the DA9062 onkey driver
>  
> +	pmic0: da9061@58 {
> +		onkey {
> +			compatible = "dlg,da9061-onkey", "dlg,da9062-onkey";
> +			dlg,disable-key-power;
> +		};
>  	};
> -- 
> end-of-patch for PATCH V2
> 
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