linux-kernel - Re: [PATCH v6 02/14] dt-bindings: pinctrl: imx: Add fsl,scu-iomux yaml file

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Date:   Thu, 30 Jun 2022 20:33:39 +0200
From:   Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>
To:     "Viorel Suman (OSS)" <viorel.suman@....nxp.com>
Cc:     Rob Herring <robh+dt@...nel.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>,
        Dmitry Torokhov <dmitry.torokhov@...il.com>,
        Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
        Dong Aisheng <aisheng.dong@....com>,
        Fabio Estevam <festevam@...il.com>,
        Shawn Guo <shawnguo@...nel.org>,
        Stefan Agner <stefan@...er.ch>,
        Pengutronix Kernel Team <kernel@...gutronix.de>,
        Linus Walleij <linus.walleij@...aro.org>,
        Alessandro Zummo <a.zummo@...ertech.it>,
        Alexandre Belloni <alexandre.belloni@...tlin.com>,
        "Rafael J. Wysocki" <rafael@...nel.org>,
        Daniel Lezcano <daniel.lezcano@...aro.org>,
        Amit Kucheria <amitk@...nel.org>,
        Zhang Rui <rui.zhang@...el.com>,
        Wim Van Sebroeck <wim@...ux-watchdog.org>,
        Guenter Roeck <linux@...ck-us.net>,
        Sascha Hauer <s.hauer@...gutronix.de>,
        NXP Linux Team <linux-imx@....com>,
        Abel Vesa <abelvesa@...nel.org>,
        Viorel Suman <viorel.suman@....com>,
        Oliver Graute <oliver.graute@...oconnector.com>,
        Liu Ying <victor.liu@....com>,
        Mirela Rabulea <mirela.rabulea@....com>,
        Peng Fan <peng.fan@....com>, Ming Qian <ming.qian@....com>,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org,
        linux-clk@...r.kernel.org, linux-input@...r.kernel.org,
        linux-gpio@...r.kernel.org, linux-rtc@...r.kernel.org,
        linux-pm@...r.kernel.org, linux-watchdog@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org
Subject: Re: [PATCH v6 02/14] dt-bindings: pinctrl: imx: Add fsl,scu-iomux
 yaml file

On 30/06/2022 14:37, Viorel Suman (OSS) wrote:
> On 22-06-29 19:53:51, Krzysztof Kozlowski wrote:
>> On 29/06/2022 18:44, Viorel Suman (OSS) wrote:
>>> From: Abel Vesa <abel.vesa@....com>
>>>
>>> In order to replace the fsl,scu txt file from bindings/arm/freescale,
>>> we need to split it between the right subsystems. This patch documents
>>> separately the 'iomux/pinctrl' child node of the SCU main node.
>>>
>>> Signed-off-by: Abel Vesa <abel.vesa@....com>
>>> Signed-off-by: Viorel Suman <viorel.suman@....com>
>>> ---
>>>  .../bindings/pinctrl/fsl,scu-pinctrl.yaml     | 68 +++++++++++++++++++
>>>  1 file changed, 68 insertions(+)
>>>  create mode 100644 Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
>>>
>>> diff --git a/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
>>> new file mode 100644
>>> index 000000000000..76a2e7b28172
>>> --- /dev/null
>>> +++ b/Documentation/devicetree/bindings/pinctrl/fsl,scu-pinctrl.yaml
> [...]
>>> +      fsl,pins:
>>> +        description:
>>> +          each entry consists of 3 integers and represents the pin ID, the mux value
>>> +          and config setting for the pin. The first 2 integers - pin_id and mux_val - are
>>> +          specified using a PIN_FUNC_ID macro, which can be found in
>>> +          <include/dt-bindings/pinctrl/pads-imx8qxp.h>. The last integer CONFIG is
>>> +          the pad setting value like pull-up on this pin. Please refer to the
>>> +          appropriate i.MX8 Reference Manual for detailed CONFIG settings.
>>> +        $ref: /schemas/types.yaml#/definitions/uint32-matrix
>>
>> Look at fsl,imx8mq-pinctrl.yaml. Each item is described (items under items).
> 
> Added them initially, but later dropped because of some logs like
> "pinctrl@...xxxx: usdhc1grp:fsl,pins:0: [...] is too long" shown by
> "make dt_binding_check dtbs_check DT_SCHEMA_FILES=[...]/fsl,scu-pinctrl.yaml"
> 
> Same logs are shown for "fsl,imx8mq-pinctrl.yaml". Will add the items description in the next
> version.
>

The fsl,imx8mq-pinctrl.yaml should be correct and I don't see the reason
why dtschema complains in some of the entries. It's like one define was
not correct... I'll take a look at this later, but anyway keep the same
as fsl,imx8mq-pinctrl.yaml even if it complains.


Best regards,
Krzysztof