2023-03-21 17:13:38

by Martin Blumenstingl

Subject: [PATCH v1 1/3] ARM: dts: meson8: add the xtal_32k_out pin

GPIOX_10 can generate a 32768Hz signal when enabling the "xtal_32k_out"
group with the xtal function. This is typically used as LPO clock for
the SDIO wifi chips.

Signed-off-by: Martin Blumenstingl <[email protected]>
---
arch/arm/boot/dts/meson8.dtsi | 8 ++++++++
1 file changed, 8 insertions(+)

diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi
index 21eb59041a7d..4d18bb4e3c33 100644
--- a/arch/arm/boot/dts/meson8.dtsi
+++ b/arch/arm/boot/dts/meson8.dtsi
@@ -568,6 +568,14 @@ mux {
bias-disable;
};
};
+
+ xtal_32k_out_pins: xtal-32k-out {
+ mux {
+ groups = "xtal_32k_out";
+ function = "xtal";
+ bias-disable;
+ };
+ };
};
};

--
2.40.0

2023-03-22 10:31:07

by Neil Armstrong

Subject: Re: [PATCH v1 1/3] ARM: dts: meson8: add the xtal_32k_out pin

On 21/03/2023 18:12, Martin Blumenstingl wrote:
> GPIOX_10 can generate a 32768Hz signal when enabling the "xtal_32k_out"
> group with the xtal function. This is typically used as LPO clock for
> the SDIO wifi chips.
>
> Signed-off-by: Martin Blumenstingl <[email protected]>
> ---
> arch/arm/boot/dts/meson8.dtsi | 8 ++++++++
> 1 file changed, 8 insertions(+)
>
> diff --git a/arch/arm/boot/dts/meson8.dtsi b/arch/arm/boot/dts/meson8.dtsi
> index 21eb59041a7d..4d18bb4e3c33 100644
> --- a/arch/arm/boot/dts/meson8.dtsi
> +++ b/arch/arm/boot/dts/meson8.dtsi
> @@ -568,6 +568,14 @@ mux {
> bias-disable;
> };
> };
> +
> + xtal_32k_out_pins: xtal-32k-out {
> + mux {
> + groups = "xtal_32k_out";
> + function = "xtal";
> + bias-disable;
> + };
> + };
> };
> };
>

Reviewed-by: Neil Armstrong <[email protected]>