On 24 June 2015 at 01:51, Florian Fainelli <f.fainelli@xxxxxxxxx> wrote:
> Enable the use of UART0 by overriding its default status property.
>
> Signed-off-by: Florian Fainelli <f.fainelli@xxxxxxxxx>
> ---
> arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts | 4 ++++
> 1 file changed, 4 insertions(+)
>
> diff --git a/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts b/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
> index d6a033b97c70..64a5e8ab65e0 100644
> --- a/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
> +++ b/arch/arm/boot/dts/bcm4708-smartrg-sr400ac.dts
> @@ -118,3 +118,7 @@
> };
> };
> };
> +
> +&uart0 {
> + status = "okay";
> +};
We have many more changes like this in OpenWrt, I just didn't upstream
them because of current chipcommonA state.
It was added before we got "brcm,bus-axi" and I believe Hauke wanted
move it to the "correct" place at some point. Since UART is part of
ChipCommon device and ChipCommon is part of "brcm,bus-axi",.I guess we
should add UARTs as a ChipCommon device subnodes. We already have
chipcommon: chipcommon@0 {
reg = <0x00000000 0x1000>;
gpio-controller;
#gpio-cells = <2>;
};
, is it possible to move UARTs there?
I'm not sure if this UART cleanup should block your change. I guess it
depends on the way it'll finally look like.
I'm also wondering: is there any preference between overwriting status
with something like
&uart0 { };
and
chipcommonA {
uart0: serial@0300 { };
};
? I don't know DT that well, just asking.
--
Rafał
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