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Date: Thu, 10 Jun 2021 23:10:42 -0500
From: Bjorn Andersson <bjorn.andersson@...aro.org>
To: satya priya <skakit@...eaurora.org>
Cc: Linus Walleij <linus.walleij@...aro.org>,
Rob Herring <robh+dt@...nel.org>,
Andy Gross <agross@...nel.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: [RESEND PATCH V4] dt-bindings: pinctrl: qcom-pmic-gpio: Convert
qcom pmic gpio bindings to YAML
On Thu 10 Jun 04:15 CDT 2021, satya priya wrote:
> Convert Qualcomm PMIC GPIO bindings from .txt to .yaml format.
>
> Signed-off-by: satya priya <skakit@...eaurora.org>
> Reviewed-by: Rob Herring <robh@...nel.org>
Please see my feedback on v3, before this can be merged.
Regards,
Bjorn
> ---
> Changes in V2:
> - 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.
>
> Changes in V3:
> - As per Rob's comments, added maxItems for reg and interrupts.
> Added reference of "pinmux-node.yaml" and "pincfg-node.yaml".
> Made 'additionalProperties' as false.
>
> Changes in V4:
> - As per Rob's comments, added description for interrupts, defined
> constraints for "qcom,drive-strength", dropped description for function
> property.
>
> Changes in RESEND V4:
> - Rebased on linux-next and sent.
>
> .../devicetree/bindings/pinctrl/qcom,pmic-gpio.txt | 288 ---------------------
> .../bindings/pinctrl/qcom,pmic-gpio.yaml | 256 ++++++++++++++++++
> 2 files changed, 256 insertions(+), 288 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.txt b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
> deleted file mode 100644
> index 161216d..0000000
> --- a/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.txt
> +++ /dev/null
> @@ -1,288 +0,0 @@
> -Qualcomm PMIC GPIO block
> -
> -This binding describes the GPIO block(s) found in the 8xxx series of
> -PMIC's from Qualcomm.
> -
> -- compatible:
> - Usage: required
> - Value type: <string>
> - Definition: must be one of:
> - "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,pm8350-gpio"
> - "qcom,pm8350b-gpio"
> - "qcom,pm8350c-gpio"
> - "qcom,pmk8350-gpio"
> - "qcom,pm7325-gpio"
> - "qcom,pmr735a-gpio"
> - "qcom,pmr735b-gpio"
> - "qcom,pm6150-gpio"
> - "qcom,pm6150l-gpio"
> - "qcom,pm8008-gpio"
> - "qcom,pmx55-gpio"
> -
> - And must contain either "qcom,spmi-gpio" or "qcom,ssbi-gpio"
> - if the device is on an spmi bus or an ssbi bus respectively
> -
> -- reg:
> - Usage: required
> - Value type: <prop-encoded-array>
> - Definition: Register base of the GPIO block and length.
> -
> -- interrupts:
> - Usage: required
> - Value type: <prop-encoded-array>
> - Definition: Must contain an array of encoded interrupt specifiers for
> - each available GPIO
> -
> -- gpio-controller:
> - Usage: required
> - Value type: <none>
> - Definition: Mark the device node as a GPIO controller
> -
> -- #gpio-cells:
> - Usage: required
> - Value type: <u32>
> - Definition: Must be 2;
> - the first cell will be used to define gpio number and the
> - second denotes the flags for this gpio
> -
> -Please refer to ../gpio/gpio.txt and ../interrupt-controller/interrupts.txt for
> -a general description of GPIO and interrupt bindings.
> -
> -Please refer to pinctrl-bindings.txt in this directory for details of the
> -common pinctrl bindings used by client devices, including the meaning of the
> -phrase "pin configuration node".
> -
> -The pin configuration nodes act as a container for an arbitrary number of
> -subnodes. Each of these subnodes represents some desired configuration for a
> -pin or a list of pins. This configuration can include the
> -mux function to select on those pin(s), and various pin configuration
> -parameters, as listed below.
> -
> -
> -SUBNODES:
> -
> -The name of each subnode is not important; all subnodes should be enumerated
> -and processed purely based on their content.
> -
> -Each subnode only affects those parameters that are explicitly listed. In
> -other words, a subnode that lists a mux function but no pin configuration
> -parameters implies no information about any pin configuration parameters.
> -Similarly, a pin subnode that describes a pullup parameter implies no
> -information about e.g. the mux function.
> -
> -The following generic properties as defined in pinctrl-bindings.txt are valid
> -to specify in a pin configuration subnode:
> -
> -- pins:
> - Usage: required
> - Value type: <string-array>
> - Definition: 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, gpio7)
> - gpio1-gpio12 for pm8150l (hole on gpio7)
> - gpio1-gpio10 for pm8350
> - gpio1-gpio8 for pm8350b
> - gpio1-gpio9 for pm8350c
> - gpio1-gpio4 for pmk8350
> - gpio1-gpio10 for pm7325
> - gpio1-gpio4 for pmr735a
> - gpio1-gpio4 for pmr735b
> - gpio1-gpio10 for pm6150
> - gpio1-gpio12 for pm6150l
> - gpio1-gpio2 for pm8008
> - gpio1-gpio11 for pmx55 (holes on gpio3, gpio7, gpio10
> - and gpio11)
> -
> -- function:
> - Usage: required
> - Value type: <string>
> - Definition: Specify the alternative function to be configured for the
> - specified pins. Valid values are:
> - "normal",
> - "paired",
> - "func1",
> - "func2",
> - "dtest1",
> - "dtest2",
> - "dtest3",
> - "dtest4",
> - And following values are supported by LV/MV GPIO subtypes:
> - "func3",
> - "func4"
> -
> -- bias-disable:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins should be configured as no pull.
> -
> -- bias-pull-down:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins should be configured as pull down.
> -
> -- bias-pull-up:
> - Usage: optional
> - Value type: <empty>
> - Definition: The specified pins should be configured as pull up.
> -
> -- qcom,pull-up-strength:
> - Usage: optional
> - Value type: <u32>
> - Definition: Specifies the strength to use for pull up, if selected.
> - Valid values are; as defined in
> - <dt-bindings/pinctrl/qcom,pmic-gpio.h>:
> - 1: 30uA (PMIC_GPIO_PULL_UP_30)
> - 2: 1.5uA (PMIC_GPIO_PULL_UP_1P5)
> - 3: 31.5uA (PMIC_GPIO_PULL_UP_31P5)
> - 4: 1.5uA + 30uA boost (PMIC_GPIO_PULL_UP_1P5_30)
> - If this property is omitted 30uA strength will be used if
> - pull up is selected
> -
> -- bias-high-impedance:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins will put in high-Z mode and disabled.
> -
> -- input-enable:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are put in input mode.
> -
> -- output-high:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in output mode, driven
> - high.
> -
> -- output-low:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in output mode, driven
> - low.
> -
> -- power-source:
> - Usage: optional
> - Value type: <u32>
> - Definition: 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:
> - Usage: optional
> - Value type: <u32>
> - Definition: Selects the drive strength for the specified pins. Value
> - drive strengths are:
> - 0: no (PMIC_GPIO_STRENGTH_NO)
> - 1: high (PMIC_GPIO_STRENGTH_HIGH) 0.9mA @ 1.8V - 1.9mA @ 2.6V
> - 2: medium (PMIC_GPIO_STRENGTH_MED) 0.6mA @ 1.8V - 1.25mA @ 2.6V
> - 3: low (PMIC_GPIO_STRENGTH_LOW) 0.15mA @ 1.8V - 0.3mA @ 2.6V
> - as defined in <dt-bindings/pinctrl/qcom,pmic-gpio.h>
> -
> -- drive-push-pull:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in push-pull mode.
> -
> -- drive-open-drain:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in open-drain mode.
> -
> -- drive-open-source:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in open-source mode.
> -
> -- qcom,analog-pass:
> - Usage: optional
> - Value type: <none>
> - Definition: The specified pins are configured in analog-pass-through mode.
> -
> -- qcom,atest:
> - Usage: optional
> - Value type: <u32>
> - Definition: Selects ATEST rail to route to GPIO when it's configured
> - in analog-pass-through mode.
> - Valid values are 1-4 corresponding to ATEST1 to ATEST4.
> -
> -- qcom,dtest-buffer:
> - Usage: optional
> - Value type: <u32>
> - Definition: Selects DTEST rail to route to GPIO when it's configured
> - as digital input.
> - Valid values are 1-4 corresponding to DTEST1 to DTEST4.
> -
> -Example:
> -
> - 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>;
> - };
> - };
> - };
> 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..d9024eb
> --- /dev/null
> +++ b/Documentation/devicetree/bindings/pinctrl/qcom,pmic-gpio.yaml
> @@ -0,0 +1,256 @@
> +# 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,pm8350-gpio
> + - qcom,pm8350b-gpio
> + - qcom,pm8350c-gpio
> + - qcom,pmk8350-gpio
> + - qcom,pm6150-gpio
> + - qcom,pm6150l-gpio
> + - qcom,pm7325-gpio
> + - qcom,pmr735a-gpio
> + - qcom,pmr735b-gpio
> + - qcom,pm8008-gpio
> + - qcom,pmx55-gpio
> +
> + - enum:
> + - qcom,spmi-gpio
> + - qcom,ssbi-gpio
> +
> + reg:
> + maxItems: 1
> +
> + interrupts:
> + minItems: 1
> + maxItems: 44
> + description: |
> + Must contain an array of encoded interrupt specifiers for
> + each available GPIO
> +
> + '#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
> + anyOf:
> + - $ref: "pinmux-node.yaml"
> + - $ref: "pincfg-node.yaml"
> + properties:
> + pins:
> + description: |
> + List of gpio pins affected by the properties specified in
> + this subnode. Valid pins are
> + - gpio1-gpio4 for pm8005
> + - gpio1-gpio6 for pm8018
> + - gpio1-gpio12 for pm8038
> + - gpio1-gpio40 for pm8058
> + - gpio1-gpio4 for pm8916
> + - gpio1-gpio38 for pm8917
> + - gpio1-gpio44 for pm8921
> + - gpio1-gpio36 for pm8941
> + - gpio1-gpio8 for pm8950 (hole on gpio3)
> + - gpio1-gpio22 for pm8994
> + - gpio1-gpio26 for pm8998
> + - gpio1-gpio22 for pma8084
> + - gpio1-gpio2 for pmi8950
> + - gpio1-gpio10 for pmi8994
> + - gpio1-gpio12 for pms405 (holes on gpio1, gpio9
> + and gpio10)
> + - gpio1-gpio10 for pm8150 (holes on gpio2, gpio5,
> + gpio7 and gpio8)
> + - gpio1-gpio12 for pm8150b (holes on gpio3, gpio4
> + and gpio7)
> + - gpio1-gpio12 for pm8150l (hole on gpio7)
> + - gpio1-gpio10 for pm8350
> + - gpio1-gpio8 for pm8350b
> + - gpio1-gpio9 for pm8350c
> + - gpio1-gpio4 for pmk8350
> + - gpio1-gpio10 for pm6150
> + - gpio1-gpio12 for pm6150l
> + - gpio1-gpio10 for pm7325
> + - gpio1-gpio4 for pmr735a
> + - gpio1-gpio4 for pmr735b
> + - gpio1-gpio2 for pm8008
> + - gpio1-gpio11 for pmx55 (holes on gpio3, gpio7, gpio10
> + and gpio11)
> +
> + items:
> + pattern: "^gpio([0-9]+)$"
> +
> + function:
> + 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: true
> +
> + bias-pull-down: true
> +
> + bias-pull-up: true
> +
> + 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: true
> +
> + input-enable: true
> +
> + output-high: true
> +
> + output-low: true
> +
> + power-source: true
> +
> + 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>
> + enum: [0, 1, 2, 3]
> +
> + drive-push-pull: true
> +
> + drive-open-drain: true
> +
> + drive-open-source: true
> +
> + 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: false
> +
> +additionalProperties: 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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