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Date: Thu, 8 Apr 2021 15:53:04 -0500
From: Rob Herring <robh@...nel.org>
To: satya priya <skakit@...eaurora.org>
Cc: Linus Walleij <linus.walleij@...aro.org>,
Andy Gross <agross@...nel.org>,
Bjorn Andersson <bjorn.andersson@...aro.org>,
kgunda@...eaurora.org, linux-gpio@...r.kernel.org,
linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
linux-arm-msm@...r.kernel.org
Subject: Re: [PATCH V2 3/3] dt-bindings: pinctrl: qcom-pmic-gpio: Convert
qcom pmic gpio bindings to YAML
On Thu, Apr 01, 2021 at 06:05:45PM +0530, satya priya wrote:
> Convert Qualcomm PMIC GPIO bindings from .txt to .yaml format.
>
> Signed-off-by: satya priya <skakit@...eaurora.org>
> ---
> Changes in V3:
> - As per Rob's comments fixed bot erros.
> - Moved this patch to end of the series so that other patches are not
> blocked on this.
>
> .../devicetree/bindings/pinctrl/qcom,pmic-gpio.txt | 280 --------------------
> .../bindings/pinctrl/qcom,pmic-gpio.yaml | 281 +++++++++++++++++++++
> 2 files changed, 281 insertions(+), 280 deletions(-)
> delete mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
> create mode 100644 Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.yaml
> diff --git a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.yaml b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.yaml
> new file mode 100644
> index 0000000..e7e7027
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.yaml
> @@ -0,0 +1,281 @@
> +# SPDX-License-Identifier: (GPL-2.0 OR BSD-2-Clause)
> +%YAML 1.2
> +---
> +$id: http://devicetree.org/schemas/pinctrl/qcom,pmic-gpio.yaml#
> +$schema: http://devicetree.org/meta-schemas/core.yaml#
> +
> +title: Qualcomm PMIC GPIO block
> +
> +maintainers:
> + - Bjorn Andersson <bjorn.andersson@...ymobile.com>
> +
> +description: |
> + This binding describes the GPIO block(s) found in the 8xxx series of
> + PMIC's from Qualcomm.
> +
> +properties:
> + compatible:
> + items:
> + - enum:
> + - qcom,pm8005-gpio
> + - qcom,pm8018-gpio
> + - qcom,pm8038-gpio
> + - qcom,pm8058-gpio
> + - qcom,pm8916-gpio
> + - qcom,pm8917-gpio
> + - qcom,pm8921-gpio
> + - qcom,pm8941-gpio
> + - qcom,pm8950-gpio
> + - qcom,pm8994-gpio
> + - qcom,pm8998-gpio
> + - qcom,pma8084-gpio
> + - qcom,pmi8950-gpio
> + - qcom,pmi8994-gpio
> + - qcom,pmi8998-gpio
> + - qcom,pms405-gpio
> + - qcom,pm660-gpio
> + - qcom,pm660l-gpio
> + - qcom,pm8150-gpio
> + - qcom,pm8150b-gpio
> + - qcom,pm6150-gpio
> + - qcom,pm6150l-gpio
> + - qcom,pmx55-gpio
> + - qcom,pm7325-gpio
> + - qcom,pm8350c-gpio
> + - qcom,pmk8350-gpio
> + - qcom,pmr735a-gpio
> +
> + - enum:
> + - qcom,spmi-gpio
> + - qcom,ssbi-gpio
Any combination of the 1st and 2nd entry is valid?
> +
> + reg:
> + description: Register base of the GPIO block and length.
Just:
maxItems: 1
> +
> + interrupts:
> + description: |
> + Must contain an array of encoded interrupt specifiers for
> + each available GPIO
Need to define how many interrupts. I assume there's some max.
> +
> + '#interrupt-cells':
> + const: 2
> +
> + interrupt-controller: true
> +
> + gpio-controller: true
> +
> + gpio-ranges:
> + maxItems: 1
> +
> + '#gpio-cells':
> + const: 2
> + description: |
> + The first cell will be used to define gpio number and the
> + second denotes the flags for this gpio
> +
> + gpio-keys:
> + type: object
> + properties:
> + volume-keys:
> + type: object
Needs a $ref to pinmux-node.yaml and pincfg-node.yaml.
> + properties:
> + pins:
> + description: |
> + List of gpio pins affected by the properties specified in
> + this subnode. Valid pins are
> + - gpio1-gpio4 for pm8005
> + - gpio1-gpio6 for pm8018
> + - gpio1-gpio12 for pm8038
> + - gpio1-gpio40 for pm8058
> + - gpio1-gpio4 for pm8916
> + - gpio1-gpio38 for pm8917
> + - gpio1-gpio44 for pm8921
> + - gpio1-gpio36 for pm8941
> + - gpio1-gpio8 for pm8950 (hole on gpio3)
> + - gpio1-gpio22 for pm8994
> + - gpio1-gpio26 for pm8998
> + - gpio1-gpio22 for pma8084
> + - gpio1-gpio2 for pmi8950
> + - gpio1-gpio10 for pmi8994
> + - gpio1-gpio12 for pms405 (holes on gpio1, gpio9
> + and gpio10)
> + - gpio1-gpio10 for pm8150 (holes on gpio2, gpio5,
> + gpio7 and gpio8)
> + - gpio1-gpio12 for pm8150b (holes on gpio3, gpio4
> + and gpio7)
> + - gpio1-gpio12 for pm8150l (hole on gpio7)
> + - gpio1-gpio10 for pm6150
> + - gpio1-gpio12 for pm6150l
> + - gpio1-gpio10 for pm7325
> + - gpio1-gpio9 for pm8350c
> + - gpio1-gpio4 for pmk8350
> + - gpio1-gpio4 for pmr735a
> +
> + $ref: /schemas/types.yaml#/definitions/string-array
Already has a type in pinmux-node.yaml.
> + items:
> + pattern: "^gpio([0-9]+)$"
> +
> + function:
> + $ref: /schemas/types.yaml#/definitions/string
ditto
> + description: |
> + Specify the alternative function to be configured for the
> + specified pins.
> + items:
> + - enum:
> + - normal
> + - paired
> + - func1
> + - func2
> + - dtest1
> + - dtest2
> + - dtest3
> + - dtest4
> + - func3 # supported by LV/MV GPIO subtypes
> + - func4 # supported by LV/MV GPIO subtypes
> +
> + bias-disable:
> + $ref: /schemas/types.yaml#/definitions/flag
And all these have a type and description. Just:
bias-disable: true
If no further constraints.
> + description:
> + The specified pins should be configured as no pull.
> +
> + bias-pull-down:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins should be configured as pull down.
> +
> + bias-pull-up:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins should be configured as pull up.
> +
> + qcom,pull-up-strength:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Specifies the strength to use for pull up, if selected.
> + Valid values are defined in
> + <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> + If this property is omitted 30uA strength will be used
> + if pull up is selected
> +
> + bias-high-impedance:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins will put in high-Z mode and disabled.
> +
> + input-enable:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: The specified pins are put in input mode.
> +
> + output-high:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: |
> + The specified pins are configured in output mode,
> + driven high.
> +
> + output-low:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: |
> + The specified pins are configured in output mode,
> + driven low.
> +
> + power-source:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Selects the power source for the specified pins.
> + Valid power sources are defined per chip in
> + <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> +
> + qcom,drive-strength:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Selects the drive strength for the specified pins
> + Valid drive strength values are defined in
> + <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> +
> + drive-push-pull:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins are configured in push-pull mode.
> +
> + drive-open-drain:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins are configured in open-drain mode.
> +
> + drive-open-source:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description:
> + The specified pins are configured in open-source mode.
> +
> + qcom,analog-pass:
> + $ref: /schemas/types.yaml#/definitions/flag
> + description: |
> + The specified pins are configured in
> + analog-pass-through mode.
> +
> + qcom,atest:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Selects ATEST rail to route to GPIO when it's
> + configured in analog-pass-through mode.
> + enum: [1 2 3 4]
> +
> + qcom,dtest-buffer:
> + $ref: /schemas/types.yaml#/definitions/uint32
> + description: |
> + Selects DTEST rail to route to GPIO when it's
> + configured as digital input.
> + enum: [1 2 3 4]
> +
> + required:
> + - pins
> + - function
> +
> + additionalProperties: true
> +
> +additionalProperties: true
Should be 'false'.
> +
> +required:
> + - compatible
> + - reg
> +
> +examples:
> + - |
> + #include <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> +
> + pm8921_gpio: gpio@150 {
> + compatible = "qcom,pm8921-gpio", "qcom,ssbi-gpio";
> + reg = <0x150 0x160>;
> + interrupts = <192 1>, <193 1>, <194 1>,
> + <195 1>, <196 1>, <197 1>,
> + <198 1>, <199 1>, <200 1>,
> + <201 1>, <202 1>, <203 1>,
> + <204 1>, <205 1>, <206 1>,
> + <207 1>, <208 1>, <209 1>,
> + <210 1>, <211 1>, <212 1>,
> + <213 1>, <214 1>, <215 1>,
> + <216 1>, <217 1>, <218 1>,
> + <219 1>, <220 1>, <221 1>,
> + <222 1>, <223 1>, <224 1>,
> + <225 1>, <226 1>, <227 1>,
> + <228 1>, <229 1>, <230 1>,
> + <231 1>, <232 1>, <233 1>,
> + <234 1>, <235 1>;
> +
> + gpio-controller;
> + #gpio-cells = <2>;
> +
> + pm8921_gpio_keys: gpio-keys {
> + volume-keys {
> + pins = "gpio20", "gpio21";
> + function = "normal";
> +
> + input-enable;
> + bias-pull-up;
> + drive-push-pull;
> + qcom,drive-strength = <PMIC_GPIO_STRENGTH_NO>;
> + power-source = <PM8921_GPIO_S4>;
> + };
> + };
> + };
> +...
> --
> QUALCOMM INDIA, on behalf of Qualcomm Innovation Center, Inc. is a member
> of Code Aurora Forum, hosted by The Linux Foundation
>
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