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

[Conor Dooley <conor@xxxxxxxxxx>]

On Fri, Jun 14, 2024 at 10:19:22AM +0300, Claudiu wrote:
> From: Claudiu Beznea <claudiu.beznea.uj@xxxxxxxxxxxxxx>
> 
> 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@xxxxxxxxxxxxxx>
> ---
>  .../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@xxxxxxxxxxxxxx>
> +
> +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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