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Date:	Thu, 22 May 2014 12:58:16 +0100
From:	Lee Jones <>
	Christophe Kerello <>
Subject: Re: [PATCH v2 09/10] mtd: st_spi_fsm: Provide mask to obtain correct
 boot device pins

Whoops, wrong patch, please ignore this v2.

> mtd: st_spi_fsm: Provide documentation for boot device mask property
> The system configuration registers which display which device the system
> booted on are in the same place on all boards which support the FSM.
> However, the bits do shift every so slightly.  To combat these we're
> adding a new property which supplies the necessary mask used to abstract
> the required information.
> Cc:
> Signed-off-by: Lee Jones <>
> diff --git a/Documentation/devicetree/bindings/mtd/st-fsm.txt b/Documentation/devicetree/bindings/mtd/st-fsm.txt
> index c248939..2ef9710 100644
> --- a/Documentation/devicetree/bindings/mtd/st-fsm.txt
> +++ b/Documentation/devicetree/bindings/mtd/st-fsm.txt
> @@ -11,6 +11,10 @@ Optional properties:
>    - st,syscfg          : Phandle to boot-device system configuration registers
>    - st,boot-device-reg : Address of the aforementioned boot-device register(s)
>    - st,boot-device-spi : Expected boot-device value if booted via this device
> +  - st,boot-device-msk : Mask to use when extracting boot device from the
> +                        above system config registers
> +  NB: If any of the st,boot-device-* properties are missing, the driver falls
> +  back to the default assumption of 'booted from SPI'.
>  Example:
>         spifsm: spifsm@...02000{

Lee Jones
Linaro STMicroelectronics Landing Team Lead │ Open source software for ARM SoCs
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