From db2056e21c666ec83d5ecbaf973fe5505405e8e0 Mon Sep 17 00:00:00 2001 From: Yinbo Zhu Date: Thu, 2 Mar 2023 16:17:10 +0800 Subject: dt-bindings: gpio: add loongson gpio Add the Loongson platform gpio binding with DT schema format using json-schema. Signed-off-by: Yinbo Zhu Reviewed-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski --- .../devicetree/bindings/gpio/loongson,ls-gpio.yaml | 126 +++++++++++++++++++++ 1 file changed, 126 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml b/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml new file mode 100644 index 000000000000..fb86e8ce6349 --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/loongson,ls-gpio.yaml @@ -0,0 +1,126 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/loongson,ls-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson GPIO controller. + +maintainers: + - Yinbo Zhu + +properties: + compatible: + enum: + - loongson,ls2k-gpio + - loongson,ls7a-gpio + + reg: + maxItems: 1 + + ngpios: + minimum: 1 + maximum: 64 + + "#gpio-cells": + const: 2 + + gpio-controller: true + + gpio-ranges: true + + interrupts: + minItems: 1 + maxItems: 64 + +required: + - compatible + - reg + - ngpios + - "#gpio-cells" + - gpio-controller + - gpio-ranges + - interrupts + +additionalProperties: false + +examples: + - | + #include + + gpio0: gpio@1fe00500 { + compatible = "loongson,ls2k-gpio"; + reg = <0x1fe00500 0x38>; + ngpios = <64>; + #gpio-cells = <2>; + gpio-controller; + gpio-ranges = <&pctrl 0 0 15>, + <&pctrl 16 16 15>, + <&pctrl 32 32 10>, + <&pctrl 44 44 20>; + interrupt-parent = <&liointc1>; + interrupts = <28 IRQ_TYPE_LEVEL_LOW>, + <29 IRQ_TYPE_LEVEL_LOW>, + <30 IRQ_TYPE_LEVEL_LOW>, + <30 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <26 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <>, + <>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>, + <27 IRQ_TYPE_LEVEL_LOW>; + }; -- cgit v1.2.3 From db9da1959db3d1e0637af4339776b285bacb0c69 Mon Sep 17 00:00:00 2001 From: Trevor Woerner Date: Fri, 10 Feb 2023 22:06:45 -0500 Subject: dt-bindings: gpio.txt: expand gpio-line-names recommendations Provide more guidance to differentiate between recommendations for names of lines which are hard-wired to on-board devices, versus recommendations for names of lines which are connected to general-purpose pin headers. Signed-off-by: Trevor Woerner Acked-by: Rob Herring Reviewed-by: Linus Walleij Signed-off-by: Bartosz Golaszewski --- Documentation/devicetree/bindings/gpio/gpio.txt | 41 +++++++++++++++++-------- 1 file changed, 29 insertions(+), 12 deletions(-) (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/gpio/gpio.txt b/Documentation/devicetree/bindings/gpio/gpio.txt index 5663e71b751f..d82c32217fff 100644 --- a/Documentation/devicetree/bindings/gpio/gpio.txt +++ b/Documentation/devicetree/bindings/gpio/gpio.txt @@ -154,18 +154,35 @@ of the GPIOs that can't be used. Optionally, a GPIO controller may have a "gpio-line-names" property. This is an array of strings defining the names of the GPIO lines going out of the -GPIO controller. This name should be the most meaningful producer name -for the system, such as a rail name indicating the usage. Package names -such as pin name are discouraged: such lines have opaque names (since they -are by definition generic purpose) and such names are usually not very -helpful. For example "MMC-CD", "Red LED Vdd" and "ethernet reset" are -reasonable line names as they describe what the line is used for. "GPIO0" -is not a good name to give to a GPIO line. Placeholders are discouraged: -rather use the "" (blank string) if the use of the GPIO line is undefined -in your design. The names are assigned starting from line offset 0 from -left to right from the passed array. An incomplete array (where the number -of passed named are less than ngpios) will still be used up until the last -provided valid line index. +GPIO controller. + +For lines which are routed to on-board devices, this name should be +the most meaningful producer name for the system, such as a rail name +indicating the usage. Package names, such as a pin name, are discouraged: +such lines have opaque names (since they are by definition general-purpose) +and such names are usually not very helpful. For example "MMC-CD", "Red LED +Vdd" and "ethernet reset" are reasonable line names as they describe what +the line is used for. "GPIO0" is not a good name to give to a GPIO line +that is hard-wired to a specific device. + +However, in the case of lines that are routed to a general purpose header +(e.g. the Raspberry Pi 40-pin header), and therefore are not hard-wired to +specific devices, using a pin number or the names on the header is fine +provided these are real (preferably unique) names. Using an SoC's pad name +or package name, or names made up from kernel-internal software constructs, +are strongly discouraged. For example "pin8 [gpio14/uart0_txd]" is fine +if the board's documentation labels pin 8 as such. However "PortB_24" (an +example of a name from an SoC's reference manual) would not be desirable. + +In either case placeholders are discouraged: rather use the "" (blank +string) if the use of the GPIO line is undefined in your design. Ideally, +try to add comments to the dts file describing the naming the convention +you have chosen, and specifying from where the names are derived. + +The names are assigned starting from line offset 0, from left to right, +from the passed array. An incomplete array (where the number of passed +names is less than ngpios) will be used up until the last provided valid +line index. Example: -- cgit v1.2.3 From d41116f7e476f5211af77454e9938a87a09a179b Mon Sep 17 00:00:00 2001 From: Emanuele Ghidoli Date: Mon, 13 Mar 2023 18:09:49 +0100 Subject: dt-bindings: gpio: add fcs,fxl6408 Add Fairchild FXL6408 8-bit I2C-controlled GPIO expander. Signed-off-by: Emanuele Ghidoli Signed-off-by: Francesco Dolcini Reviewed-by: Krzysztof Kozlowski Reviewed-by: Linus Walleij Signed-off-by: Bartosz Golaszewski --- .../devicetree/bindings/gpio/fcs,fxl6408.yaml | 58 ++++++++++++++++++++++ 1 file changed, 58 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/fcs,fxl6408.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/gpio/fcs,fxl6408.yaml b/Documentation/devicetree/bindings/gpio/fcs,fxl6408.yaml new file mode 100644 index 000000000000..65b6970e42fb --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/fcs,fxl6408.yaml @@ -0,0 +1,58 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/fcs,fxl6408.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Fairchild FXL6408 I2C GPIO Expander + +maintainers: + - Emanuele Ghidoli + +properties: + compatible: + enum: + - fcs,fxl6408 + + reg: + maxItems: 1 + + "#gpio-cells": + const: 2 + + gpio-controller: true + + gpio-line-names: + minItems: 1 + maxItems: 8 + +patternProperties: + "^(hog-[0-9]+|.+-hog(-[0-9]+)?)$": + required: + - gpio-hog + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + +additionalProperties: false + +examples: + - | + i2c { + #address-cells = <1>; + #size-cells = <0>; + + gpio_expander_43: gpio-expander@43 { + compatible = "fcs,fxl6408"; + reg = <0x43>; + gpio-controller; + #gpio-cells = <2>; + gpio-line-names = "Wi-Fi_W_DISABLE", "Wi-Fi_WKUP_WLAN", + "PWR_EN_+V3.3_WiFi_N", "PCIe_REF_CLK_EN", + "USB_RESET_N", "USB_BYPASS_N", "Wi-Fi_PDn", + "Wi-Fi_WKUP_BT"; + }; + }; -- cgit v1.2.3 From 722cfe4ffa6a13324e956bee81a1c0976034d89d Mon Sep 17 00:00:00 2001 From: Keguang Zhang Date: Wed, 15 Mar 2023 19:06:50 +0800 Subject: dt-bindings: gpio: Add Loongson-1 GPIO Add devicetree binding document for Loongson-1 GPIO. Signed-off-by: Keguang Zhang Reviewed-by: Krzysztof Kozlowski Signed-off-by: Bartosz Golaszewski --- .../bindings/gpio/loongson,ls1x-gpio.yaml | 49 ++++++++++++++++++++++ 1 file changed, 49 insertions(+) create mode 100644 Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml (limited to 'Documentation/devicetree') diff --git a/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml b/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml new file mode 100644 index 000000000000..1a472c05697c --- /dev/null +++ b/Documentation/devicetree/bindings/gpio/loongson,ls1x-gpio.yaml @@ -0,0 +1,49 @@ +# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) +%YAML 1.2 +--- +$id: http://devicetree.org/schemas/gpio/loongson,ls1x-gpio.yaml# +$schema: http://devicetree.org/meta-schemas/core.yaml# + +title: Loongson-1 GPIO controller + +maintainers: + - Keguang Zhang + +properties: + compatible: + const: loongson,ls1x-gpio + + reg: + maxItems: 1 + + gpio-controller: true + + "#gpio-cells": + const: 2 + + ngpios: + minimum: 1 + maximum: 32 + +required: + - compatible + - reg + - gpio-controller + - "#gpio-cells" + - ngpios + +additionalProperties: false + +examples: + - | + gpio0: gpio@1fd010c0 { + compatible = "loongson,ls1x-gpio"; + reg = <0x1fd010c0 0x4>; + + gpio-controller; + #gpio-cells = <2>; + + ngpios = <32>; + }; + +... -- cgit v1.2.3