Re: [RFC PATCH v3 2/2] arm64: dts: renesas: ulcb-kf: add node for GNSS

From: Geert Uytterhoeven <geert@linux-m68k.org>
To: Wolfram Sang <wsa+renesas@sang-engineering.com>
Cc: linux-renesas-soc@vger.kernel.org,
	Magnus Damm <magnus.damm@gmail.com>,
	 Rob Herring <robh+dt@kernel.org>,
	 Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
	Conor Dooley <conor+dt@kernel.org>,
	 devicetree@vger.kernel.org, linux-kernel@vger.kernel.org
Subject: Re: [RFC PATCH v3 2/2] arm64: dts: renesas: ulcb-kf: add node for GNSS
Date: Fri, 26 Jan 2024 15:24:48 +0100	[thread overview]
Message-ID: <CAMuHMdX7Z8w0JykKuboP__ZE4x+LeKSQAGdyrUezERxysPUCKA@mail.gmail.com> (raw)
In-Reply-To: <20240117131807.24997-3-wsa+renesas@sang-engineering.com>

Hi Wolfram,

On Wed, Jan 17, 2024 at 2:18 PM Wolfram Sang
<wsa+renesas@sang-engineering.com> wrote:
> Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
> ---
> Changes since last version:
>
> * use 'reg_3p3v' instead of custom regulator

Thanks for the update!

> --- a/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
> +++ b/arch/arm64/boot/dts/renesas/ulcb-kf.dtsi
> @@ -392,6 +392,13 @@ &scif1 {
>         pinctrl-names = "default";
>
>         status = "okay";
> +
> +       gnss {
> +               compatible = "u-blox,neo-m8";
> +               reset-gpios = <&gpio_exp_75 6 GPIO_ACTIVE_LOW>;
> +               vcc-supply = <&reg_3p3v>;
> +               current-speed = <9600>;
> +       };
>  };
>
>  &sdhi3 {

LGTM, so
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>

Before I queue this, I have one remaining question.
The device is also connected to I2C bus i2c@7 aka AUDIO_S{DA,CL}.
Can it be used over I2C too? Is there some strapping to select the
interface used? I couldn't find that in the documentation.
(It does support clock stretching! ;-)

Gr{oetje,eeting}s,

                        Geert

-- 
Geert Uytterhoeven -- There's lots of Linux beyond ia32 -- geert@linux-m68k.org

In personal conversations with technical people, I call myself a hacker. But
when I'm talking to journalists I just say "programmer" or something like that.
                                -- Linus Torvalds