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From: Bjorn Andersson <bjorn.andersson@linaro.org>
To: Baruch Siach <baruch@tkos.co.il>, Rob Herring <robh+dt@kernel.org>
Cc: Thierry Reding <thierry.reding@gmail.com>,
	Uwe Kleine-K?nig <u.kleine-koenig@pengutronix.de>,
	Lee Jones <lee.jones@linaro.org>, Andy Gross <agross@kernel.org>,
	Balaji Prakash J <bjagadee@codeaurora.org>,
	Robert Marko <robert.marko@sartura.hr>,
	linux-pwm@vger.kernel.org, devicetree@vger.kernel.org,
	linux-arm-msm@vger.kernel.org,
	linux-arm-kernel@lists.infradead.org
Subject: Re: [PATCH v2 2/3] dt-bindings: pwm: add IPQ6018 binding
Date: Wed, 2 Jun 2021 18:05:52 -0500	[thread overview]
Message-ID: <YLgO0Aj1d4w9EcPv@yoga> (raw)
In-Reply-To: <249bddc521b15e992d0846edf1813aeb577458b9.1621851644.git.baruch@tkos.co.il>

On Mon 24 May 05:20 CDT 2021, Baruch Siach wrote:

> DT binding for the PWM block in Qualcomm IPQ6018 SoC.
> 
> Signed-off-by: Baruch Siach <baruch@tkos.co.il>
> ---
> v2: Make #pwm-cells const (Rob Herring)
> ---
>  .../devicetree/bindings/pwm/ipq-pwm.yaml      | 52 +++++++++++++++++++
>  1 file changed, 52 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pwm/ipq-pwm.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml b/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml
> new file mode 100644
> index 000000000000..f85ce808a14e
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pwm/ipq-pwm.yaml
> @@ -0,0 +1,52 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pwm/ipq-pwm.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm IPQ6018 PWM controller
> +
> +maintainers:
> +  - Baruch Siach <baruch@tkos.co.il>
> +
> +properties:
> +  "#pwm-cells":
> +    const: 2
> +
> +  compatible:
> +    const: qcom,pwm-ipq6018
> +
> +  reg:
> +    maxItems: 1
> +
> +  clocks:
> +    maxItems: 1
> +
> +  clock-names:
> +    const: core
> +
> +required:
> +  - "#pwm-cells"
> +  - compatible
> +  - reg
> +  - clocks
> +  - clock-names
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +    #include <dt-bindings/clock/qcom,gcc-ipq6018.h>
> +
> +    soc {
> +        #address-cells = <2>;
> +        #size-cells = <2>;
> +
> +        pwm@1941010 {
> +            #pwm-cells = <2>;
> +            compatible = "qcom,pwm-ipq6018";
> +            reg = <0x0 0x1941010 0x0 0x20>;

These 32 bytes are in the middle of the TCSR block, which is already
partially described by the &tcsr_q6 node, which is described as only
compatible = "syscon" - something no longer accepted by the DT
maintainers.

As such, I think we should adjust the &tcsr_q6 definition to cover the
entire TCSR: 0x01937000 of size 0x21000.


@Rob, should we represent the entire tcsr as a simple-mfd and then have
the pwm and q6 region as children of that? Or can we make the whole
thing as a simple-mfd and a syscon and only describe the pwm as a child?

Regards,
Bjorn

> +            clocks = <&gcc GCC_ADSS_PWM_CLK>;
> +            clock-names = "core";
> +        };
> +    };
> -- 
> 2.30.2
> 

  parent reply	other threads:[~2021-06-02 23:05 UTC|newest]

Thread overview: 6+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2021-05-24 10:20 [PATCH v2 1/3] pwm: driver for qualcomm ipq6018 pwm block Baruch Siach
2021-05-24 10:20 ` [PATCH v2 2/3] dt-bindings: pwm: add IPQ6018 binding Baruch Siach
2021-06-02 19:47   ` Rob Herring
2021-06-02 23:05   ` Bjorn Andersson [this message]
2021-06-30 14:46     ` Kathiravan T
2021-05-24 10:20 ` [PATCH v2 3/3] arm64: dts: ipq6018: add pwm node Baruch Siach

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