linux-kernel - Re: [PATCH 2/2] ARM64: dts: meson-gxm-rbox-pro: Enable Bluetooth

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Date:   Wed, 18 Jan 2017 14:29:58 -0800
From:   Kevin Hilman <khilman@...libre.com>
To:     Andreas Färber <afaerber@...e.de>
Cc:     linux-amlogic@...ts.infradead.org, Carlo Caione <carlo@...one.org>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        Catalin Marinas <catalin.marinas@....com>,
        Will Deacon <will.deacon@....com>, devicetree@...r.kernel.org
Subject: Re: [PATCH 2/2] ARM64: dts: meson-gxm-rbox-pro: Enable Bluetooth

Andreas Färber <afaerber@...e.de> writes:

> Add an SDIO reset GPIO and enable the serial used by the AP6255
> Bluetooth module. Based on work by Martin Blumenstingl.
>
> Signed-off-by: Andreas Färber <afaerber@...e.de>
> ---
>  arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts | 11 ++++++++++-
>  1 file changed, 10 insertions(+), 1 deletion(-)
>
> diff --git a/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts b/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
> index 9f04fa4e5aec..6ea225f584bd 100644
> --- a/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
> +++ b/arch/arm64/boot/dts/amlogic/meson-gxm-rbox-pro.dts
> @@ -58,6 +58,7 @@
>  
>  	aliases {
>  		serial0 = &uart_AO;
> +		serial1 = &uart_A;
>  	};
>  
>  	chosen {
> @@ -122,7 +123,8 @@
>  
>  	sdio_pwrseq: sdio-pwrseq {
>  		compatible = "mmc-pwrseq-simple";
> -		reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>;
> +		reset-gpios = <&gpio GPIOX_6 GPIO_ACTIVE_LOW>,
> +				<&gpio GPIOX_17 GPIO_ACTIVE_LOW>;
>  		clocks = <&wifi32k>;
>  		clock-names = "ext_clock";

c.f. thread on Martin's series.   I don't like this (ab)use of
reset-gpios for sdio-pwrseq, and there's some work coming that will make
this much cleaner.

So, I'll hold off on this until the other solution is ready.

Kevin