Re: [PATCH 02/12] dt-bindings: clock: renesas,rzg3s-vbattb-clk: Document the VBATTB clock driver

Conor Dooley
2024-06-15T12:18:06Z

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On Fri, Jun 14, 2024 at 10:19:22AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
>
> The VBATTB IP of the Renesas RZ/G3S SoC controls the clock that feeds
> the RTC and the tamper detector. Add documentation for the VBATTB clock
> driver.
>
> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> ---
> .../clock/renesas,rzg3s-vbattb-clk.yaml | 90 +++++++++++++++++++
> 1 file changed, 90 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/renesas,rzg3s-vbattb-clk.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/renesas,rzg3s-vbattb-clk.yaml b/Documentation/devicetree/bindings/clock/renesas,rzg3s-vbattb-clk.yaml
> new file mode 100644
> index 000000000000..ef52a0c0f874
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/renesas,rzg3s-vbattb-clk.yaml
> @@ -0,0 +1,90 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/renesas,rzg3s-vbattb-clk.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Renesas VBATTB clock
> +
> +maintainers:
> + - Claudiu Beznea <claudiu.beznea.uj@bp.renesas.com>
> +
> +description:
> + Renesas VBATTB module is an always on powered module (backed by battery) which
> + generates a clock (VBATTCLK). This clocks feeds the RTC and the tamper detector
> + modules.
> +
> +properties:
> + compatible:
> + const: renesas,rzg3s-vbattb-clk
> +
> + reg:
> + maxItems: 1
> +
> + clocks:
> + items:
> + - description: VBATTB module clock
> + - description: VBATTB input xtal
> +
> + clock-names:
> + items:
> + - const: bclk
> + - const: vbattb_xtal
> +
> + '#clock-cells':
> + const: 0
> +
> + power-domains:
> + maxItems: 1
> +
> + renesas,vbattb-load-nanofarads:
> + description: load capacitance of the on board xtal
> + $ref: /schemas/types.yaml#/definitions/uint32
> + enum: [ 4000, 7000, 9000, 12500 ]
> +
> + renesas,vbattb-osc-bypass:
> + description: set when external clock is connected to RTXOUT pin
> + type: boolean

When you say "external clock", is that an input or an output?

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