[1/2] dts: mfd: axp20x: Add xpowers,master-mode property for AXP806 PMICs

commit b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
was intended to fix the case where a board uses an AXP806 in slave mode,
but the boot loader leaves it in master mode for lack of AXP806 support.
But now the driver breaks on boards where the PMIC is operating in master
mode. To let the device tree describe which mode of operation is needed,
this patch introduces a new property "xpowers,master-mode".

Fixes: b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
Signed-off-by: Rask Ingemann Lambertsen <rask@formelder.dk>
---
 Documentation/devicetree/bindings/mfd/axp20x.txt | 3 +++
 1 file changed, 3 insertions(+)

On Sun, Feb 19, 2017 at 3:51 AM, Rask Ingemann Lambertsen
<rask@formelder.dk> wrote:
> commit b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
> was intended to fix the case where a board uses an AXP806 in slave mode,
> but the boot loader leaves it in master mode for lack of AXP806 support.
> But now the driver breaks on boards where the PMIC is operating in master
> mode. To let the device tree describe which mode of operation is needed,
> this patch introduces a new property "xpowers,master-mode".
>
> Fixes: b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")

I think this should point to the original commit that added support
for the AXP806.

Otherwise,

Acked-by: Chen-Yu Tsai <wens@csie.org>

> Signed-off-by: Rask Ingemann Lambertsen <rask@formelder.dk>
> ---
>  Documentation/devicetree/bindings/mfd/axp20x.txt | 3 +++
>  1 file changed, 3 insertions(+)
>
> diff --git a/Documentation/devicetree/bindings/mfd/axp20x.txt b/Documentation/devicetree/bindings/mfd/axp20x.txt
> index 86ae540..9af3457 100644
> --- a/Documentation/devicetree/bindings/mfd/axp20x.txt
> +++ b/Documentation/devicetree/bindings/mfd/axp20x.txt
> @@ -29,6 +29,9 @@ Optional properties:
>                   regulator to drive the OTG VBus, rather then as an input pin
>                   which signals whether the board is driving OTG VBus or not.
>
> +- x-powers,master-mode: Boolean (axp806 only). Set this when the PMIC is
> +                       wired for master mode. The default is slave mode.
> +
>  - <input>-supply: a phandle to the regulator supply node. May be omitted if
>                   inputs are unregulated, such as using the IPSOUT output
>                   from the PMIC.
> --
> 2.10.2
>
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html

On Sat, Feb 18, 2017 at 08:51:18PM +0100, Rask Ingemann Lambertsen wrote:
> commit b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
> was intended to fix the case where a board uses an AXP806 in slave mode,
> but the boot loader leaves it in master mode for lack of AXP806 support.
> But now the driver breaks on boards where the PMIC is operating in master
> mode. To let the device tree describe which mode of operation is needed,
> this patch introduces a new property "xpowers,master-mode".
> 
> Fixes: b101829a029a ("mfd: axp20x: Fix AXP806 access errors on cold boot")
> Signed-off-by: Rask Ingemann Lambertsen <rask@formelder.dk>
> ---
>  Documentation/devicetree/bindings/mfd/axp20x.txt | 3 +++
>  1 file changed, 3 insertions(+)

Acked-by: Rob Herring <robh@kernel.org>
--
To unsubscribe from this list: send the line "unsubscribe devicetree" in
the body of a message to majordomo@vger.kernel.org
More majordomo info at  http://vger.kernel.org/majordomo-info.html