# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/xlnx,zynq-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx Zynq Pinctrl
maintainers:
- Sai Krishna Potthuri <sai.krishna.potthuri@amd.com>
description: |
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".
Zynq's pin configuration nodes act as a container for an arbitrary number of
subnodes. Each of these subnodes represents some desired configuration for a
pin, a group, or a list of pins or groups. This configuration can include the
mux function to select on those pin(s)/group(s), and various pin configuration
parameters, such as pull-up, slew rate, etc.
Each configuration node can consist of multiple nodes describing the pinmux and
pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
The name of each subnode is not important; all subnodes should be enumerated
and processed purely based on their content.
properties:
compatible:
const: xlnx,zynq-pinctrl
reg:
description: Specifies the base address and size of the SLCR space.
maxItems: 1
syscon:
description:
phandle to the SLCR.
patternProperties:
'^(.*-)?(default|gpio)$':
type: object
patternProperties:
'^mux':
type: object
description:
Pinctrl node's client devices use subnodes for pin muxes,
which in turn use below standard properties.
$ref: pinmux-node.yaml#
properties:
groups:
description:
List of groups to select (either this or "pins" must be
specified), available groups for this subnode.
items:
enum: [ethernet0_0_grp, ethernet1_0_grp, mdio0_0_grp,
mdio1_0_grp, qspi0_0_grp, qspi1_0_grp, qspi_fbclk,
qspi_cs1_grp, spi0_0_grp, spi0_1_grp, spi0_2_grp,
spi0_0_ss0, spi0_0_ss1, spi0_0_ss2, spi0_1_ss0,
spi0_1_ss1, spi0_1_ss2, spi0_2_ss0, spi0_2_ss1,
spi0_2_ss2, spi1_0_grp, spi1_1_grp, spi1_2_grp,
spi1_3_grp, spi1_0_ss0, spi1_0_ss1, spi1_0_ss2,
spi1_1_ss0, spi1_1_ss1, spi1_1_ss2, spi1_2_ss0,
spi1_2_ss1, spi1_2_ss2, spi1_3_ss0, spi1_3_ss1,
spi1_3_ss2, sdio0_0_grp, sdio0_1_grp, sdio0_2_grp,
sdio1_0_grp, sdio1_1_grp, sdio1_2_grp, sdio1_3_grp,
sdio0_emio_wp, sdio0_emio_cd, sdio1_emio_wp,
sdio1_emio_cd, smc0_nor, smc0_nor_cs1_grp,
smc0_nor_addr25_grp, smc0_nand, can0_0_grp, can0_1_grp,
can0_2_grp, can0_3_grp, can0_4_grp, can0_5_grp,
can0_6_grp, can0_7_grp, can0_8_grp, can0_9_grp,
can0_10_grp, can1_0_grp, can1_1_grp, can1_2_grp,
can1_3_grp, can1_4_grp, can1_5_grp, can1_6_grp,
can1_7_grp, can1_8_grp, can1_9_grp, can1_10_grp,
can1_11_grp, uart0_0_grp, uart0_1_grp, uart0_2_grp,
uart0_3_grp, uart0_4_grp, uart0_5_grp, uart0_6_grp,
uart0_7_grp, uart0_8_grp, uart0_9_grp, uart0_10_grp,
uart1_0_grp, uart1_1_grp, uart1_2_grp, uart1_3_grp,
uart1_4_grp, uart1_5_grp, uart1_6_grp, uart1_7_grp,
uart1_8_grp, uart1_9_grp, uart1_10_grp, uart1_11_grp,
i2c0_0_grp, i2c0_1_grp, i2c0_2_grp, i2c0_3_grp,
i2c0_4_grp, i2c0_5_grp, i2c0_6_grp, i2c0_7_grp,
i2c0_8_grp, i2c0_9_grp, i2c0_10_grp, i2c1_0_grp,
i2c1_1_grp, i2c1_2_grp, i2c1_3_grp, i2c1_4_grp,
i2c1_5_grp, i2c1_6_grp, i2c1_7_grp, i2c1_8_grp,
i2c1_9_grp, i2c1_10_grp, ttc0_0_grp, ttc0_1_grp,
ttc0_2_grp, ttc1_0_grp, ttc1_1_grp, ttc1_2_grp,
swdt0_0_grp, swdt0_1_grp, swdt0_2_grp, swdt0_3_grp,
swdt0_4_grp, gpio0_0_grp, gpio0_1_grp, gpio0_2_grp,
gpio0_3_grp, gpio0_4_grp, gpio0_5_grp, gpio0_6_grp,
gpio0_7_grp, gpio0_8_grp, gpio0_9_grp, gpio0_10_grp,
gpio0_11_grp, gpio0_12_grp, gpio0_13_grp, gpio0_14_grp,
gpio0_15_grp, gpio0_16_grp, gpio0_17_grp, gpio0_18_grp,
gpio0_19_grp, gpio0_20_grp, gpio0_21_grp, gpio0_22_grp,
gpio0_23_grp, gpio0_24_grp, gpio0_25_grp, gpio0_26_grp,
gpio0_27_grp, gpio0_28_grp, gpio0_29_grp, gpio0_30_grp,
gpio0_31_grp, gpio0_32_grp, gpio0_33_grp, gpio0_34_grp,
gpio0_35_grp, gpio0_36_grp, gpio0_37_grp, gpio0_38_grp,
gpio0_39_grp, gpio0_40_grp, gpio0_41_grp, gpio0_42_grp,
gpio0_43_grp, gpio0_44_grp, gpio0_45_grp, gpio0_46_grp,
gpio0_47_grp, gpio0_48_grp, gpio0_49_grp, gpio0_50_grp,
gpio0_51_grp, gpio0_52_grp, gpio0_53_grp, usb0_0_grp,
usb1_0_grp]
maxItems: 54
function:
description:
Specify the alternative function to be configured for the
given pin groups.
enum: [ethernet0, ethernet1, mdio0, mdio1, qspi0, qspi1, qspi_fbclk,
qspi_cs1, spi0, spi0_ss, spi1, spi1_ss, sdio0, sdio0_pc,
sdio0_cd, sdio0_wp, sdio1, sdio1_pc, sdio1_cd, sdio1_wp,
smc0_nor, smc0_nor_cs1, smc0_nor_addr25, smc0_nand, can0,
can1, uart0, uart1, i2c0, i2c1, ttc0, ttc1, swdt0, gpio0,
usb0, usb1]
required:
- groups
- function
additionalProperties: false
'^conf':
type: object
description:
Pinctrl node's client devices use subnodes for pin configurations,
which in turn use the standard properties below.
$ref: pincfg-node.yaml#
properties:
groups:
description:
List of pin groups as mentioned above.
pins:
description:
List of pin names to select in this subnode.
items:
pattern: '^MIO([0-9]|[1-4][0-9]|5[0-3])$'
maxItems: 54
bias-pull-up: true
bias-pull-down: true
bias-disable: true
bias-high-impedance: true
low-power-enable: true
low-power-disable: true
slew-rate:
enum: [0, 1]
power-source:
enum: [1, 2, 3, 4]
oneOf:
- required: [ groups ]
- required: [ pins ]
additionalProperties: false
additionalProperties: false
allOf:
- $ref: pinctrl.yaml#
required:
- compatible
- reg
- syscon
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/pinctrl-zynq.h>
pinctrl0: pinctrl@700 {
compatible = "xlnx,zynq-pinctrl";
reg = <0x700 0x200>;
syscon = <&slcr>;
pinctrl_uart1_default: uart1-default {
mux {
groups = "uart1_10_grp";
function = "uart1";
};
conf {
groups = "uart1_10_grp";
slew-rate = <0>;
power-source = <IO_STANDARD_LVCMOS18>;
};
conf-rx {
pins = "MIO49";
bias-high-impedance;
};
conf-tx {
pins = "MIO48";
bias-disable;
};
};
};
uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1_default>;
};
...