From: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
To: Aleksandr Shubin <privatesub2@gmail.com>, linux-kernel@vger.kernel.org
Cc: "Thierry Reding" <thierry.reding@gmail.com>,
"Uwe Kleine-König" <u.kleine-koenig@pengutronix.de>,
"Rob Herring" <robh+dt@kernel.org>,
"Krzysztof Kozlowski" <krzysztof.kozlowski+dt@linaro.org>,
"Conor Dooley" <conor+dt@kernel.org>,
"Chen-Yu Tsai" <wens@csie.org>,
"Jernej Skrabec" <jernej.skrabec@gmail.com>,
"Samuel Holland" <samuel@sholland.org>,
"Paul Walmsley" <paul.walmsley@sifive.com>,
"Palmer Dabbelt" <palmer@dabbelt.com>,
"Albert Ou" <aou@eecs.berkeley.edu>,
"Philipp Zabel" <p.zabel@pengutronix.de>,
"Cristian Ciocaltea" <cristian.ciocaltea@collabora.com>,
"Andre Przywara" <andre.przywara@arm.com>,
linux-pwm@vger.kernel.org, devicetree@vger.kernel.org,
linux-arm-kernel@lists.infradead.org,
linux-sunxi@lists.linux.dev, linux-riscv@lists.infradead.org
Subject: Re: [PATCH v2 1/3] dt-bindings: pwm: Add binding for Allwinner D1/T113-S3/R329 PWM controller
Date: Fri, 23 Jun 2023 18:33:23 +0200 [thread overview]
Message-ID: <d962285e-b3f0-6225-316c-39a7d16808cd@linaro.org> (raw)
In-Reply-To: <20230623150012.1201552-2-privatesub2@gmail.com>
On 23/06/2023 16:59, Aleksandr Shubin wrote:
> Allwinner's D1, T113-S3 and R329 SoCs have a new pwm
> controller witch is different from the previous pwm-sun4i.
>
> The D1 and T113 are identical in terms of peripherals,
> they differ only in the architecture of the CPU core, and
> even share the majority of their DT. Because of that,
> using the same compatible makes sense.
> The R329 is a different SoC though, and should have
> a different compatible string added, especially as there
> is a difference in the number of channels.
>
> D1 and T113s SoCs have one PWM controller with 8 channels.
> R329 SoC has two PWM controllers in both power domains, one of
> them has 9 channels (CPUX one) and the other has 6 (CPUS one).
>
> Add a device tree binding for them.
>
> Signed-off-by: Aleksandr Shubin <privatesub2@gmail.com>
> ---
> .../bindings/pwm/allwinner,sun20i-pwm.yaml | 83 +++++++++++++++++++
> 1 file changed, 83 insertions(+)
> create mode 100644 Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml
>
> diff --git a/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml b/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml
> new file mode 100644
> index 000000000000..eec9d1dd67c2
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/allwinner,sun20i-pwm.yaml
> @@ -0,0 +1,83 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/allwinner,sun20i-pwm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Allwinner D1, T113-S3 and R329 PWM
> +
> +maintainers:
> + - Aleksandr Shubin <privatesub2@gmail.com>
> +
> +properties:
> + compatible:
> + oneOf:
> + - const: allwinner,sun20i-d1-pwm
> + - items:
> + - const: allwinner,sun20i-r329-pwm
> + - const: allwinner,sun20i-d1-pwm
> +
> + reg:
> + maxItems: 1
> +
> + "#pwm-cells":
> + const: 3
> +
> + clocks:
> + items:
> + - description: 24 MHz oscillator
> + - description: Bus Clock
> +
> + clock-names:
> + items:
> + - const: hosc
> + - const: bus
> +
> + resets:
> + maxItems: 1
> + description: module reset
> +
> +allOf:
> + - $ref: pwm.yaml#
> +
> + - if:
> + properties:
> + compatible:
> + contains:
> + const: allwinner,sun20i-r329-pwm
> +
> + then:
> + properties:
> + allwinner,pwm-channels:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: The number of PWM channels configured for this instance
> + enum: [6, 9]
> +
Your DTS says this is 8, so you did not test it. Why do you need it in
the first place? r329 can have both 6 and 9?
Anyway, this won't work with additionalProperties, which you would see
with testing. Don't define properties in allOf. Also switch to
unevaluatedProperties: false.
Best regards,
Krzysztof
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next prev parent reply other threads:[~2023-06-23 16:33 UTC|newest]
Thread overview: 8+ messages / expand[flat|nested] mbox.gz Atom feed top
2023-06-23 14:59 [PATCH v2 0/3] Add support for Allwinner PWM on D1/T113s/R329 SoCs Aleksandr Shubin
2023-06-23 14:59 ` [PATCH v2 1/3] dt-bindings: pwm: Add binding for Allwinner D1/T113-S3/R329 PWM controller Aleksandr Shubin
2023-06-23 16:06 ` Conor Dooley
2023-06-23 16:25 ` Conor Dooley
2023-06-23 16:33 ` Krzysztof Kozlowski [this message]
2023-06-23 15:00 ` [PATCH v2 2/3] pwm: Add Allwinner's D1/T113-S3/R329 SoCs PWM support Aleksandr Shubin
2023-06-23 15:00 ` [PATCH v2 3/3] riscv: dts: allwinner: d1: Add pwm node Aleksandr Shubin
2023-06-23 16:06 ` Conor Dooley
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