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