[PATCH] ARM64: juno: add NOR flash to device tree

[Liviu Dudau]

On Thu, Oct 15, 2015 at 12:20:15PM +0200, Linus Walleij wrote:
> The Juno motherboard has a NOR flash on the motherboard, enable
> this to be accessed with the CFI flash driver. Results after
> enabling MTD, MTD_CFI, MTD_PHYSMAP, MTD_PHYSMAP_OF,
> MTD_CFI_INTELEXT:
> 
> 8000000.flash: Found 2 x16 devices at 0x0 in 32-bit bank.
> Manufacturer ID 0x000089 Chip ID 0x008919
> Intel/Sharp Extended Query Table at 0x010A
> Intel/Sharp Extended Query Table at 0x010A
> Intel/Sharp Extended Query Table at 0x010A
> Intel/Sharp Extended Query Table at 0x010A
> Intel/Sharp Extended Query Table at 0x010A
> Using buffer write method
> Using auto-unlock on power-up/resume
> cfi_cmdset_0001: Erase suspend on write enabled
> erase region 0: offset=0x0,size=0x40000,blocks=255
> erase region 1: offset=0x3fc0000,size=0x10000,blocks=4
> 
> Cc: Liviu Dudau <Liviu.Dudau at arm.com>
> Cc: Catalin Marinas <catalin.marinas at arm.com>
> Signed-off-by: Linus Walleij <linus.walleij at linaro.org>

Acked-by: Liviu Dudau <Liviu.Dudau at arm.com>

> ---
> ARM SoC folks: please apply this directly for -next if
> people are OK with it, as I have no other Juno patches
> pending for now.
> ---
>  arch/arm64/boot/dts/arm/juno-motherboard.dtsi | 8 ++++++++
>  1 file changed, 8 insertions(+)
> 
> diff --git a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi
> index 637e046f0e36..c7c99a42e2e9 100644
> --- a/arch/arm64/boot/dts/arm/juno-motherboard.dtsi
> +++ b/arch/arm64/boot/dts/arm/juno-motherboard.dtsi
> @@ -103,6 +103,14 @@
>  				};
>  			};
>  
> +			flash at 0,00000000 {
> +				/* 2 * 32MiB NOR Flash memory mounted on CS0 */
> +				compatible = "arm,vexpress-flash", "cfi-flash";
> +				linux,part-probe = "afs";

It would be nice if the linux,part-probe binding was documented somewhere.

> +				reg = <0 0x00000000 0x04000000>;
> +				bank-width = <4>;
> +			};
> +
>  			ethernet at 2,00000000 {
>  				compatible = "smsc,lan9118", "smsc,lan9115";
>  				reg = <2 0x00000000 0x10000>;
> -- 
> 2.4.3
> 

Thanks for this,
Liviu


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