linux-kernel - Re: [PATCH 1/2] dt-bindings: pinctrl: qcom: Add msm8226 pinctrl bindings

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Message-ID: <20200715202413.GA755488@bogus>
Date:   Wed, 15 Jul 2020 14:24:13 -0600
From:   Rob Herring <robh@...nel.org>
To:     Bartosz Dudziak <bartosz.dudziak@...jp.pl>
Cc:     Bjorn Andersson <bjorn.andersson@...aro.org>,
        Andy Gross <agross@...nel.org>,
        Linus Walleij <linus.walleij@...aro.org>,
        linux-arm-msm@...r.kernel.org, linux-gpio@...r.kernel.org,
        devicetree@...r.kernel.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH 1/2] dt-bindings: pinctrl: qcom: Add msm8226 pinctrl
 bindings

On Sat, Jun 27, 2020 at 09:28:30PM +0200, Bartosz Dudziak wrote:
> Add device tree binding Documentation details for Qualcomm msm8226
> pinctrl driver.
> 
> - Bindings documentation was based on qcom,sm8250-pinctrl.yaml by
>   Bjorn Andersson <bjorn.andersson@...aro.org> and then modified for
>   msm8226 content
> 
> Signed-off-by: Bartosz Dudziak <bartosz.dudziak@...jp.pl>
> ---
>  .../pinctrl/qcom,msm8226-pinctrl.yaml         | 123 ++++++++++++++++++
>  1 file changed, 123 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> 
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> new file mode 100644
> index 0000000000..8d8dc15718
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,msm8226-pinctrl.yaml
> @@ -0,0 +1,123 @@
> +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/qcom,msm8226-pinctrl.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm Technologies, Inc. MSM8226 TLMM block
> +
> +maintainers:
> +  - Bjorn Andersson <bjorn.andersson@...aro.org>
> +
> +description: |
> +  This binding describes the Top Level Mode Multiplexer block found in the
> +  MSM8226 platform.
> +
> +properties:
> +  compatible:
> +    const: qcom,msm8226-pinctrl
> +
> +  reg:
> +    description: Specifies the base address and size of the TLMM register space
> +    maxItems: 1
> +
> +  interrupts:
> +    description: Specifies the TLMM summary IRQ
> +    maxItems: 1
> +
> +  interrupt-controller: true
> +
> +  '#interrupt-cells':
> +    description: Specifies the PIN numbers and Flags, as defined in
> +      include/dt-bindings/interrupt-controller/irq.h
> +    const: 2
> +
> +  gpio-controller: true
> +
> +  '#gpio-cells':
> +    description: Specifying the pin number and flags, as defined in
> +      include/dt-bindings/gpio/gpio.h
> +    const: 2
> +
> +  gpio-ranges:
> +    maxItems: 1
> +
> +  gpio-reserved-ranges:
> +    maxItems: 1
> +
> +#PIN CONFIGURATION NODES
> +patternProperties:
> +  '^.*$':
> +    if:
> +      type: object

For new bindings, do '-pins$' for the node name pattern so we don't have 
to do this hack.

> +    then:
> +      properties:
> +        pins:
> +          description:
> +            List of gpio pins affected by the properties specified in this
> +            subnode.
> +          items:
> +            oneOf:
> +              - pattern: "^gpio([0-9]|[1-9][0-9]|1[0-1][0-6])$"
> +              - enum: [ sdc1_clk, sdc1_cmd, sdc1_data, sdc2_clk, sdc2_cmd, sdc2_data ]
> +          minItems: 1
> +          maxItems: 36
> +
> +        function:
> +          description:
> +            Specify the alternative function to be configured for the specified
> +            pins. Functions are only valid for gpio pins.
> +
> +          enum: [ gpio, cci_i2c0, blsp_uim1, blsp_uim2, blsp_uim3, blsp_uim5,
> +            blsp_i2c1, blsp_i2c2, blsp_i2c3, blsp_i2c5, blsp_spi1,
> +            blsp_spi2, blsp_spi3, blsp_spi5, blsp_uart1, blsp_uart2,
> +            blsp_uart3, blsp_uart5, cam_mclk0, cam_mclk1, wlan ]
> +
> +        drive-strength:
> +          enum: [2, 4, 6, 8, 10, 12, 14, 16]
> +          default: 2
> +          description:
> +            Selects the drive strength for the specified pins, in mA.
> +
> +        bias-pull-down: true
> +
> +        bias-pull-up: true
> +
> +        bias-disable: true
> +
> +        output-high: true
> +
> +        output-low: true
> +
> +      required:
> +        - pins
> +        - function
> +
> +      additionalProperties: false
> +
> +required:
> +  - compatible
> +  - reg
> +  - interrupts
> +  - interrupt-controller
> +  - '#interrupt-cells'
> +  - gpio-controller
> +  - '#gpio-cells'
> +  - gpio-ranges
> +
> +additionalProperties: false
> +
> +examples:
> +  - |
> +        #include <dt-bindings/interrupt-controller/arm-gic.h>
> +        msmgpio: pinctrl@...10000 {
> +                compatible = "qcom,msm8226-pinctrl";
> +                reg = <0xfd510000 0x4000>;
> +
> +                gpio-controller;
> +                #gpio-cells = <2>;
> +                gpio-ranges = <&msmgpio 0 0 117>;
> +                interrupt-controller;
> +                #interrupt-cells = <2>;
> +                interrupts = <GIC_SPI 208 IRQ_TYPE_LEVEL_HIGH>;
> +        };
> -- 
> 2.25.1
>