Re: [PATCH v2 2/8] dt-bindings: clock: samsung: add bindings for Exynos external clock

Sam Protsenko
2021-08-10T18:17:18Z

On Tue, 10 Aug 2021 at 12:32, Krzysztof Kozlowski
<krzysztof.kozlowski@canonical.com> wrote:
>
> Document the bindings for Samsung Exynos external to SoC
> (oscclk/XXTI/XusbXTI) clock provided on boards. The bindings are
> already implemented in most of the Exynos clock drivers and DTS files.
>
> Signed-off-by: Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> ---

Just want to mention that remaining users of such fixed clocks can be
converted to regular fixed-rate-clock, and then this binding can be
removed along with samsung_clk_of_register_fixed_ext() API? Just a
thought.

> .../clock/samsung,exynos-ext-clock.yaml | 46 +++++++++++++++++++
> 1 file changed, 46 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/clock/samsung,exynos-ext-clock.yaml
>
> diff --git a/Documentation/devicetree/bindings/clock/samsung,exynos-ext-clock.yaml b/Documentation/devicetree/bindings/clock/samsung,exynos-ext-clock.yaml
> new file mode 100644
> index 000000000000..64d027dbe3b2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/clock/samsung,exynos-ext-clock.yaml
> @@ -0,0 +1,46 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/clock/samsung,exynos-ext-clock.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Samsung SoC external/osc/XXTI/XusbXTI clock
> +
> +maintainers:
> + - Chanwoo Choi <cw00.choi@samsung.com>
> + - Krzysztof Kozlowski <krzysztof.kozlowski@canonical.com>
> + - Sylwester Nawrocki <s.nawrocki@samsung.com>
> + - Tomasz Figa <tomasz.figa@gmail.com>
> +
> +description: |
> + Samsung SoCs require an external clock supplied through XXTI or XusbXTI pins.
> +
> +properties:
> + compatible:
> + enum:
> + - samsung,clock-xxti
> + - samsung,clock-xusbxti
> + - samsung,exynos5420-oscclk
> +
> + "#clock-cells":
> + const: 0
> +
> + clock-frequency: true
> +
> + clock-output-names:
> + maxItems: 1
> +
> +required:
> + - compatible
> + - clock-frequency
> +
> +additionalProperties: false
> +
> +examples:
> + - |
> + fixed-rate-clocks {
> + clock {
> + compatible = "samsung,clock-xxti";
> + clock-frequency = <24000000>;
> + };
> + };
> --
> 2.30.2
>