232 lines
7.4 KiB
YAML
232 lines
7.4 KiB
YAML
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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/pinctrl/raspberrypi,rp1-gpio.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: RaspberryPi RP1 GPIO/Pinconf/Pinmux Controller submodule
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maintainers:
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- A. della Porta <andrea.porta@suse.com>
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description:
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The RP1 chipset is a Multi Function Device containing, among other
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sub-peripherals, a gpio/pinconf/mux controller whose 54 pins are grouped
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into 3 banks.
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It works also as an interrupt controller for those gpios.
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properties:
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compatible:
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const: raspberrypi,rp1-gpio
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reg:
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maxItems: 3
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description: One reg specifier for each one of the 3 pin banks.
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'#gpio-cells':
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description: The first cell is the pin number and the second cell is used
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to specify the flags (see include/dt-bindings/gpio/gpio.h).
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const: 2
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gpio-controller: true
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gpio-ranges:
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maxItems: 1
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gpio-line-names:
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maxItems: 54
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interrupts:
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maxItems: 3
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description: One interrupt specifier for each one of the 3 pin banks.
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'#interrupt-cells':
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description:
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Specifies the Bank number [0, 1, 2] and Flags as defined in
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include/dt-bindings/interrupt-controller/irq.h.
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const: 2
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interrupt-controller: true
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patternProperties:
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'-state$':
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oneOf:
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- $ref: '#/$defs/raspberrypi-rp1-state'
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- patternProperties:
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'-pins$':
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$ref: '#/$defs/raspberrypi-rp1-state'
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additionalProperties: false
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$defs:
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raspberrypi-rp1-state:
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allOf:
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- $ref: pincfg-node.yaml#
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- $ref: pinmux-node.yaml#
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description:
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Pin controller client devices use pin configuration subnodes (children
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and grandchildren) for desired pin configuration.
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Client device subnodes use below standard properties.
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properties:
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pins:
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description:
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List of gpio pins affected by the properties specified in this
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subnode (either this or "groups" must be specified).
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items:
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pattern: '^gpio([0-9]|[1-4][0-9]|5[0-3])$'
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groups:
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description:
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List of groups affected by the properties specified in this
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subnode (either this or "pins" must be specified).
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items:
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anyOf:
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- pattern: '^gpio([0-9]|[1-4][0-9]|5[0-3])$'
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- enum: [ uart0, uart0_ctrl, uart1, uart1_ctrl, uart2, uart2_ctrl,
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uart3, uart3_ctrl, uart4, uart4_ctrl, uart5_0,
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uart5_0_ctrl, uart5_1, uart5_1_ctrl, uart5_2,
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uart5_2_ctrl, uart5_3,
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sd0, sd1,
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i2s0, i2s0_dual, i2s0_quad, i2s1, i2s1_dual, i2s1_quad,
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i2s2_0, i2s2_0_dual, i2s2_1, i2s2_1_dual,
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i2c4_0, i2c4_1, i2c4_2, i2c4_3, i2c6_0, i2c6_1, i2c5_0,
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i2c5_1, i2c5_2, i2c5_3, i2c0_0, i2c0_1, i2c1_0, i2c1_1,
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i2c2_0, i2c2_1, i2c3_0, i2c3_1, i2c3_2,
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dpi_16bit, dpi_16bit_cpadhi, dpi_16bit_pad666,
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dpi_18bit, dpi_18bit_cpadhi, dpi_24bit,
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spi0, spi0_quad, spi1, spi2, spi3, spi4, spi5, spi6_0,
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spi6_1, spi7_0, spi7_1, spi8_0, spi8_1,
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aaud_0, aaud_1, aaud_2, aaud_3, aaud_4,
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vbus0_0, vbus0_1, vbus1, vbus2, vbus3,
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mic_0, mic_1, mic_2, mic_3,
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ir ]
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function:
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enum: [ alt0, alt1, alt2, alt3, alt4, gpio, alt6, alt7, alt8, none,
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aaud, dcd0, dpi, dsi0_te_ext, dsi1_te_ext, dsr0, dtr0, gpclk0,
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gpclk1, gpclk2, gpclk3, gpclk4, gpclk5, i2c0, i2c1, i2c2, i2c3,
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i2c4, i2c5, i2c6, i2s0, i2s1, i2s2, ir, mic, pcie_clkreq_n,
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pio, proc_rio, pwm0, pwm1, ri0, sd0, sd1, spi0, spi1, spi2,
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spi3, spi4, spi5, spi6, spi7, spi8, uart0, uart1, uart2, uart3,
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uart4, uart5, vbus0, vbus1, vbus2, vbus3 ]
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description:
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Specify the alternative function to be configured for the specified
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pins.
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bias-disable: true
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bias-pull-down: true
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bias-pull-up: true
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input-enable: true
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input-schmitt-enable: true
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output-enable: true
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output-high: true
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output-low: true
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slew-rate:
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description: 0 is slow slew rate, 1 is fast slew rate
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enum: [ 0, 1 ]
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drive-strength:
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enum: [ 2, 4, 8, 12 ]
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required:
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- function
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oneOf:
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- required: [ groups ]
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- required: [ pins ]
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additionalProperties: false
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allOf:
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- $ref: pinctrl.yaml#
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required:
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- reg
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- compatible
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- '#gpio-cells'
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- gpio-controller
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- interrupts
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- '#interrupt-cells'
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- interrupt-controller
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unevaluatedProperties: false
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examples:
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- |
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#include <dt-bindings/interrupt-controller/irq.h>
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rp1 {
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#address-cells = <2>;
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#size-cells = <2>;
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rp1_gpio: pinctrl@c0400d0000 {
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reg = <0xc0 0x400d0000 0x0 0xc000>,
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<0xc0 0x400e0000 0x0 0xc000>,
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<0xc0 0x400f0000 0x0 0xc000>;
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compatible = "raspberrypi,rp1-gpio";
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gpio-controller;
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#gpio-cells = <2>;
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interrupt-controller;
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#interrupt-cells = <2>;
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interrupts = <0 IRQ_TYPE_LEVEL_HIGH>,
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<1 IRQ_TYPE_LEVEL_HIGH>,
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<2 IRQ_TYPE_LEVEL_HIGH>;
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gpio-line-names =
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"ID_SDA", // GPIO0
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"ID_SCL", // GPIO1
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"GPIO2", "GPIO3", "GPIO4", "GPIO5", "GPIO6",
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"GPIO7", "GPIO8", "GPIO9", "GPIO10", "GPIO11",
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"GPIO12", "GPIO13", "GPIO14", "GPIO15", "GPIO16",
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"GPIO17", "GPIO18", "GPIO19", "GPIO20", "GPIO21",
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"GPIO22", "GPIO23", "GPIO24", "GPIO25", "GPIO26",
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"GPIO27",
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"PCIE_RP1_WAKE", // GPIO28
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"FAN_TACH", // GPIO29
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"HOST_SDA", // GPIO30
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"HOST_SCL", // GPIO31
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"ETH_RST_N", // GPIO32
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"", // GPIO33
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"CD0_IO0_MICCLK", // GPIO34
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"CD0_IO0_MICDAT0", // GPIO35
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"RP1_PCIE_CLKREQ_N", // GPIO36
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"", // GPIO37
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"CD0_SDA", // GPIO38
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"CD0_SCL", // GPIO39
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"CD1_SDA", // GPIO40
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"CD1_SCL", // GPIO41
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"USB_VBUS_EN", // GPIO42
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"USB_OC_N", // GPIO43
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"RP1_STAT_LED", // GPIO44
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"FAN_PWM", // GPIO45
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"CD1_IO0_MICCLK", // GPIO46
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"2712_WAKE", // GPIO47
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"CD1_IO1_MICDAT1", // GPIO48
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"EN_MAX_USB_CUR", // GPIO49
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"", // GPIO50
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"", // GPIO51
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"", // GPIO52
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""; // GPIO53
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rp1-i2s0-default-state {
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function = "i2s0";
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pins = "gpio18", "gpio19", "gpio20", "gpio21";
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bias-disable;
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};
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rp1-uart0-default-state {
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txd-pins {
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function = "uart0";
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pins = "gpio14";
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bias-disable;
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};
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rxd-pins {
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function = "uart0";
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pins = "gpio15";
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bias-pull-up;
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};
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};
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};
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};
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