.../bindings/pinctrl/microchip,mcp23s08.yaml | 161 ++++++++++++++++++ .../bindings/pinctrl/pinctrl-mcp23s08.txt | 148 ---------------- 2 files changed, 161 insertions(+), 148 deletions(-) create mode 100644 Documentation/devicetree/bindings/pinctrl/microchip,mcp23s08.yaml delete mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
YAML binding file provides the conversion of the original text-based
binding for the pinctrl-mcp23s08 to microchip,mcp23s08.yaml.
following compatible strings using the deprecated mcp prefix have been
removed from this binding:
- mcp,mcp23s08
- mcp,mcp23s17
- mcp,mcp23008
- mcp,mcp23017
Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
---
Change in V2:
- Change the commit message
- Remove copyright
- Change the file name to microchip,mcp23s08.yaml
- Remove '|'
- Add 'spi-peripheral-props' reference
- Remove pull-up from required properties
Change in V3:
- Use correct quotes (')
- Drop Unused label
- Drop one i2c example
---
.../bindings/pinctrl/microchip,mcp23s08.yaml | 161 ++++++++++++++++++
.../bindings/pinctrl/pinctrl-mcp23s08.txt | 148 ----------------
2 files changed, 161 insertions(+), 148 deletions(-)
create mode 100644 Documentation/devicetree/bindings/pinctrl/microchip,mcp23s08.yaml
delete mode 100644 Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
diff --git a/Documentation/devicetree/bindings/pinctrl/microchip,mcp23s08.yaml b/Documentation/devicetree/bindings/pinctrl/microchip,mcp23s08.yaml
new file mode 100644
index 000000000000..e07f4723de17
--- /dev/null
+++ b/Documentation/devicetree/bindings/pinctrl/microchip,mcp23s08.yaml
@@ -0,0 +1,161 @@
+# SPDX-License-Identifier: GPL-2.0-only
+%YAML 1.2
+---
+$id: http://devicetree.org/schemas/pinctrl/microchip,mcp23s08.yaml#
+$schema: http://devicetree.org/meta-schemas/core.yaml#
+
+title: Microchip I/O expander with serial interface (I2C/SPI)
+
+maintainers:
+ - Himanshu Bhavani <himanshu.bhavani@siliconsignals.io>
+
+description:
+ Microchip MCP23008, MCP23017, MCP23S08, MCP23S17, MCP23S18 GPIO expander
+ chips.These chips provide 8 or 16 GPIO pins with either I2C or SPI interface.
+
+allOf:
+ - $ref: /schemas/spi/spi-peripheral-props.yaml#
+
+properties:
+ compatible:
+ enum:
+ - microchip,mcp23s08
+ - microchip,mcp23s17
+ - microchip,mcp23s18
+ - microchip,mcp23008
+ - microchip,mcp23017
+ - microchip,mcp23018
+
+ reg:
+ maxItems: 1
+
+ gpio-controller: true
+
+ '#gpio-cells':
+ const: 2
+
+ interrupt-controller: true
+
+ '#interrupt-cells':
+ const: 2
+
+ interrupts:
+ maxItems: 1
+
+ reset-gpios:
+ description: GPIO specifier for active-low reset pin.
+ maxItems: 1
+
+ microchip,spi-present-mask:
+ description:
+ Multiple SPI chips can share the same SPI chipselect. Set a bit in
+ bit0-7 in this mask to 1 if there is a chip connected with the
+ corresponding spi address set. For example if you have a chip with
+ address 3 connected, you have to set bit3 to 1, which is 0x08. mcp23s08
+ chip variant only supports bits 0-3. It is not possible to mix mcp23s08
+ and mcp23s17 on the same chipselect. Set at least one bit to 1 for SPI
+ chips.
+ $ref: /schemas/types.yaml#/definitions/uint8
+
+ microchip,irq-mirror:
+ type: boolean
+ description:
+ Sets the mirror flag in the IOCON register. Devices with two interrupt
+ outputs (these are the devices ending with 17 and those that have 16 IOs)
+ have two IO banks IO 0-7 form bank 1 and IO 8-15 are bank 2. These chips
+ have two different interrupt outputs One for bank 1 and another for
+ bank 2. If irq-mirror is set, both interrupts are generated regardless of
+ the bank that an input change occurred on. If it is not set,the interrupt
+ are only generated for the bank they belong to.
+
+ microchip,irq-active-high:
+ type: boolean
+ description:
+ Sets the INTPOL flag in the IOCON register.This configures the IRQ output
+ polarity as active high.
+
+ drive-open-drain:
+ type: boolean
+ description:
+ Sets the ODR flag in the IOCON register. This configures the IRQ output as
+ open drain active low.
+
+ pinmux:
+ type: object
+ properties:
+ pins:
+ description:
+ The list of GPIO pins controlled by this node. Each pin name
+ corresponds to a physical pin on the GPIO expander.
+ items:
+ pattern: '^gpio([0-9]|[1][0-5])$'
+ maxItems: 16
+
+ bias-pull-up:
+ type: boolean
+ description:
+ Configures pull-up resistors for the GPIO pins. Absence of this
+ property will leave the configuration in its default state.
+
+ required:
+ - pins
+
+ additionalProperties: false
+
+required:
+ - compatible
+ - reg
+ - gpio-controller
+ - '#gpio-cells'
+
+unevaluatedProperties: false
+
+examples:
+ - |
+ #include <dt-bindings/interrupt-controller/irq.h>
+ #include <dt-bindings/gpio/gpio.h>
+
+ i2c {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio@21 {
+ compatible = "microchip,mcp23017";
+ reg = <0x21>;
+ gpio-controller;
+ #gpio-cells = <2>;
+
+ interrupt-parent = <&gpio1>;
+ interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
+ interrupt-controller;
+ #interrupt-cells = <2>;
+
+ microchip,irq-mirror;
+ pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_i2c_gpio0>, <&gpiopullups>;
+ reset-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
+
+ gpiopullups: pinmux {
+ pins = "gpio0", "gpio1", "gpio2", "gpio3",
+ "gpio4", "gpio5", "gpio6", "gpio7",
+ "gpio8", "gpio9", "gpio10", "gpio11",
+ "gpio12", "gpio13", "gpio14", "gpio15";
+ bias-pull-up;
+ };
+ };
+ };
+
+ - |
+ spi {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ gpio@0 {
+ compatible = "microchip,mcp23s17";
+ reg = <0>;
+ gpio-controller;
+ #gpio-cells = <2>;
+ spi-max-frequency = <1000000>;
+ microchip,spi-present-mask = /bits/ 8 <0x01>;
+ };
+ };
diff --git a/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt b/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
deleted file mode 100644
index 2fa5edac7a35..000000000000
--- a/Documentation/devicetree/bindings/pinctrl/pinctrl-mcp23s08.txt
+++ /dev/null
@@ -1,148 +0,0 @@
-Microchip MCP2308/MCP23S08/MCP23017/MCP23S17 driver for
-8-/16-bit I/O expander with serial interface (I2C/SPI)
-
-Required properties:
-- compatible : Should be
- - "mcp,mcp23s08" (DEPRECATED) for 8 GPIO SPI version
- - "mcp,mcp23s17" (DEPRECATED) for 16 GPIO SPI version
- - "mcp,mcp23008" (DEPRECATED) for 8 GPIO I2C version or
- - "mcp,mcp23017" (DEPRECATED) for 16 GPIO I2C version of the chip
-
- - "microchip,mcp23s08" for 8 GPIO SPI version
- - "microchip,mcp23s17" for 16 GPIO SPI version
- - "microchip,mcp23s18" for 16 GPIO SPI version
- - "microchip,mcp23008" for 8 GPIO I2C version or
- - "microchip,mcp23017" for 16 GPIO I2C version of the chip
- - "microchip,mcp23018" for 16 GPIO I2C version
- NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
- removed.
-- #gpio-cells : Should be two.
- - first cell is the pin number
- - second cell is used to specify flags as described in
- 'Documentation/devicetree/bindings/gpio/gpio.txt'. Allowed values defined by
- 'include/dt-bindings/gpio/gpio.h' (e.g. GPIO_ACTIVE_LOW).
-- gpio-controller : Marks the device node as a GPIO controller.
-- reg : For an address on its bus. I2C uses this a the I2C address of the chip.
- SPI uses this to specify the chipselect line which the chip is
- connected to. The driver and the SPI variant of the chip support
- multiple chips on the same chipselect. Have a look at
- microchip,spi-present-mask below.
-
-Required device specific properties (only for SPI chips):
-- mcp,spi-present-mask (DEPRECATED)
-- microchip,spi-present-mask : This is a present flag, that makes only sense for SPI
- chips - as the name suggests. Multiple SPI chips can share the same
- SPI chipselect. Set a bit in bit0-7 in this mask to 1 if there is a
- chip connected with the corresponding spi address set. For example if
- you have a chip with address 3 connected, you have to set bit3 to 1,
- which is 0x08. mcp23s08 chip variant only supports bits 0-3. It is not
- possible to mix mcp23s08 and mcp23s17 on the same chipselect. Set at
- least one bit to 1 for SPI chips.
- NOTE: Do not use the old mcp prefix any more. It is deprecated and will be
- removed.
-- spi-max-frequency = The maximum frequency this chip is able to handle
-
-Optional properties:
-- #interrupt-cells : Should be two.
- - first cell is the pin number
- - second cell is used to specify flags.
-- interrupt-controller: Marks the device node as a interrupt controller.
-- drive-open-drain: Sets the ODR flag in the IOCON register. This configures
- the IRQ output as open drain active low.
-- reset-gpios: Corresponds to the active-low RESET# pin for the chip
-
-Optional device specific properties:
-- microchip,irq-mirror: Sets the mirror flag in the IOCON register. Devices
- with two interrupt outputs (these are the devices ending with 17 and
- those that have 16 IOs) have two IO banks: IO 0-7 form bank 1 and
- IO 8-15 are bank 2. These chips have two different interrupt outputs:
- One for bank 1 and another for bank 2. If irq-mirror is set, both
- interrupts are generated regardless of the bank that an input change
- occurred on. If it is not set, the interrupt are only generated for the
- bank they belong to.
- On devices with only one interrupt output this property is useless.
-- microchip,irq-active-high: Sets the INTPOL flag in the IOCON register. This
- configures the IRQ output polarity as active high.
-
-Example I2C (with interrupt):
-gpiom1: gpio@20 {
- compatible = "microchip,mcp23017";
- gpio-controller;
- #gpio-cells = <2>;
- reg = <0x20>;
-
- interrupt-parent = <&gpio1>;
- interrupts = <17 IRQ_TYPE_LEVEL_LOW>;
- interrupt-controller;
- #interrupt-cells=<2>;
- microchip,irq-mirror;
-};
-
-Example SPI:
-gpiom1: gpio@0 {
- compatible = "microchip,mcp23s17";
- gpio-controller;
- #gpio-cells = <2>;
- microchip,spi-present-mask = <0x01>;
- reg = <0>;
- spi-max-frequency = <1000000>;
-};
-
-Pull-up configuration
-=====================
-
-If pins are used as output, they can also be configured with pull-ups. This is
-done with pinctrl.
-
-Please refer file <devicetree/bindings/pinctrl/pinctrl-bindings.txt>
-for details of the common pinctrl bindings used by client devices,
-including the meaning of the phrase "pin configuration node".
-
-Optional Pinmux properties:
---------------------------
-Following properties are required if default setting of pins are required
-at boot.
-- pinctrl-names: A pinctrl state named per <pinctrl-bindings.txt>.
-- pinctrl[0...n]: Properties to contain the phandle for pinctrl states per
- <pinctrl-bindings.txt>.
-
-The pin configurations are defined as child of the pinctrl states node. Each
-sub-node have following properties:
-
-Required properties:
-------------------
-- pins: List of pins. Valid values of pins properties are:
- gpio0 ... gpio7 for the devices with 8 GPIO pins and
- gpio0 ... gpio15 for the devices with 16 GPIO pins.
-
-Optional properties:
--------------------
-The following optional property is defined in the pinmux DT binding document
-<pinctrl-bindings.txt>. Absence of this property will leave the configuration
-in its default state.
- bias-pull-up
-
-Example with pinctrl to pull-up output pins:
-gpio21: gpio@21 {
- compatible = "microchip,mcp23017";
- gpio-controller;
- #gpio-cells = <0x2>;
- reg = <0x21>;
- interrupt-parent = <&socgpio>;
- interrupts = <0x17 0x8>;
- interrupt-names = "mcp23017@21 irq";
- interrupt-controller;
- #interrupt-cells = <0x2>;
- microchip,irq-mirror;
- pinctrl-names = "default";
- pinctrl-0 = <&i2cgpio0irq>, <&gpio21pullups>;
- reset-gpios = <&gpio6 15 GPIO_ACTIVE_LOW>;
-
- gpio21pullups: pinmux {
- pins = "gpio0", "gpio1", "gpio2", "gpio3",
- "gpio4", "gpio5", "gpio6", "gpio7",
- "gpio8", "gpio9", "gpio10", "gpio11",
- "gpio12", "gpio13", "gpio14", "gpio15";
- bias-pull-up;
- };
-};
--
2.43.0On Mon, Oct 28, 2024 at 7:40 AM Himanshu Bhavani <himanshu.bhavani@siliconsignals.io> wrote: > YAML binding file provides the conversion of the original text-based > binding for the pinctrl-mcp23s08 to microchip,mcp23s08.yaml. > > following compatible strings using the deprecated mcp prefix have been > removed from this binding: > > - mcp,mcp23s08 > - mcp,mcp23s17 > - mcp,mcp23008 > - mcp,mcp23017 > > Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io> Patch applied! Thanks for working on this Himanshu, excellent. Yours, Linus Walleij
On Mon, Oct 28, 2024 at 12:09:11PM +0530, Himanshu Bhavani wrote: > YAML binding file provides the conversion of the original text-based > binding for the pinctrl-mcp23s08 to microchip,mcp23s08.yaml. > > following compatible strings using the deprecated mcp prefix have been > removed from this binding: > > - mcp,mcp23s08 > - mcp,mcp23s17 > - mcp,mcp23008 > - mcp,mcp23017 > > Signed-off-by: Himanshu Bhavani <himanshu.bhavani@siliconsignals.io> > --- Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org> --- <form letter> This is an automated instruction, just in case, because many review tags are being ignored. If you know the process, you can skip it (please do not feel offended by me posting it here - no bad intentions intended). If you do not know the process, here is a short explanation: Please add Acked-by/Reviewed-by/Tested-by tags when posting new versions, under or above your Signed-off-by tag. Tag is "received", when provided in a message replied to you on the mailing list. Tools like b4 can help here. However, there's no need to repost patches *only* to add the tags. The upstream maintainer will do that for tags received on the version they apply. https://elixir.bootlin.com/linux/v6.5-rc3/source/Documentation/process/submitting-patches.rst#L577 </form letter> Best regards, Krzysztof
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