Commit 1dccb5ec authored by Sai Krishna Potthuri's avatar Sai Krishna Potthuri Committed by Linus Walleij

dt-bindings: pinctrl: Add binding for ZynqMP pinctrl driver

Adding documentation and dt-bindings file which contains MIO pin
configuration defines for Xilinx ZynqMP pinctrl driver.
Signed-off-by: default avatarSai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Link: https://lore.kernel.org/r/1618485193-5403-3-git-send-email-lakshmi.sai.krishna.potthuri@xilinx.comSigned-off-by: default avatarLinus Walleij <linus.walleij@linaro.org>
parent 11f054c1
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/xlnx,zynqmp-pinctrl.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Xilinx ZynqMP Pinctrl
maintainers:
- Sai Krishna Potthuri <lakshmi.sai.krishna.potthuri@xilinx.com>
- Rajan Vaja <rajan.vaja@xilinx.com>
description: |
Please refer to pinctrl-bindings.txt in this directory for details of the
common pinctrl bindings used by client devices, including the meaning of the
phrase "pin configuration node".
ZynqMP's pin configuration nodes act as a container for an arbitrary number of
subnodes. Each of these subnodes represents some desired configuration for a
pin, a group, or a list of pins or groups. This configuration can include the
mux function to select on those pin(s)/group(s), and various pin configuration
parameters, such as pull-up, slew rate, etc.
Each configuration node can consist of multiple nodes describing the pinmux and
pinconf options. Those nodes can be pinmux nodes or pinconf nodes.
The name of each subnode is not important; all subnodes should be enumerated
and processed purely based on their content.
properties:
compatible:
const: xlnx,zynqmp-pinctrl
patternProperties:
'^(.*-)?(default|gpio)$':
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, ethernet2_0_grp,
ethernet3_0_grp, gemtsu0_0_grp, gemtsu0_1_grp,
gemtsu0_2_grp, mdio0_0_grp, mdio1_0_grp,
mdio1_1_grp, mdio2_0_grp, mdio3_0_grp,
qspi0_0_grp, qspi_ss_0_grp, qspi_fbclk_0_grp,
spi0_0_grp, spi0_ss_0_grp, spi0_ss_1_grp,
spi0_ss_2_grp, spi0_1_grp, spi0_ss_3_grp,
spi0_ss_4_grp, spi0_ss_5_grp, spi0_2_grp,
spi0_ss_6_grp, spi0_ss_7_grp, spi0_ss_8_grp,
spi0_3_grp, spi0_ss_9_grp, spi0_ss_10_grp,
spi0_ss_11_grp, spi0_4_grp, spi0_ss_12_grp,
spi0_ss_13_grp, spi0_ss_14_grp, spi0_5_grp,
spi0_ss_15_grp, spi0_ss_16_grp, spi0_ss_17_grp,
spi1_0_grp, spi1_ss_0_grp, spi1_ss_1_grp,
spi1_ss_2_grp, spi1_1_grp, spi1_ss_3_grp,
spi1_ss_4_grp, spi1_ss_5_grp, spi1_2_grp,
spi1_ss_6_grp, spi1_ss_7_grp, spi1_ss_8_grp,
spi1_3_grp, spi1_ss_9_grp, spi1_ss_10_grp,
spi1_ss_11_grp, spi1_4_grp, spi1_ss_12_grp,
spi1_ss_13_grp, spi1_ss_14_grp, spi1_5_grp,
spi1_ss_15_grp, spi1_ss_16_grp, spi1_ss_17_grp,
sdio0_0_grp, sdio0_1_grp, sdio0_2_grp,
sdio0_3_grp, sdio0_4_grp, sdio0_5_grp,
sdio0_6_grp, sdio0_7_grp, sdio0_8_grp,
sdio0_9_grp, sdio0_10_grp, sdio0_11_grp,
sdio0_12_grp, sdio0_13_grp, sdio0_14_grp,
sdio0_15_grp, sdio0_16_grp, sdio0_17_grp,
sdio0_18_grp, sdio0_19_grp, sdio0_20_grp,
sdio0_21_grp, sdio0_22_grp, sdio0_23_grp,
sdio0_24_grp, sdio0_25_grp, sdio0_26_grp,
sdio0_27_grp, sdio0_28_grp, sdio0_29_grp,
sdio0_30_grp, sdio0_31_grp, sdio0_32_grp,
sdio0_pc_0_grp, sdio0_cd_0_grp, sdio0_wp_0_grp,
sdio0_pc_1_grp, sdio0_cd_1_grp, sdio0_wp_1_grp,
sdio0_pc_2_grp, sdio0_cd_2_grp, sdio0_wp_2_grp,
sdio1_0_grp, sdio1_1_grp, sdio1_2_grp,
sdio1_3_grp, sdio1_4_grp, sdio1_5_grp,
sdio1_6_grp, sdio1_7_grp, sdio1_8_grp,
sdio1_9_grp, sdio1_10_grp, sdio1_11_grp,
sdio1_12_grp, sdio1_13_grp, sdio1_14_grp,
sdio1_15_grp, sdio1_pc_0_grp, sdio1_cd_0_grp,
sdio1_wp_0_grp, sdio1_pc_1_grp, sdio1_cd_1_grp,
sdio1_wp_1_grp, nand0_0_grp, nand0_ce_0_grp,
nand0_rb_0_grp, nand0_dqs_0_grp, nand0_ce_1_grp,
nand0_rb_1_grp, nand0_dqs_1_grp, 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, can0_11_grp, can0_12_grp,
can0_13_grp, can0_14_grp, can0_15_grp,
can0_16_grp, can0_17_grp, can0_18_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,
can1_12_grp, can1_13_grp, can1_14_grp,
can1_15_grp, can1_16_grp, can1_17_grp,
can1_18_grp, can1_19_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, uart0_11_grp, uart0_12_grp,
uart0_13_grp, uart0_14_grp, uart0_15_grp,
uart0_16_grp, uart0_17_grp, uart0_18_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,
uart1_12_grp, uart1_13_grp, uart1_14_grp,
uart1_15_grp, uart1_16_grp, uart1_17_grp,
uart1_18_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,
i2c0_11_grp, i2c0_12_grp, i2c0_13_grp,
i2c0_14_grp, i2c0_15_grp, i2c0_16_grp,
i2c0_17_grp, i2c0_18_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, i2c1_11_grp, i2c1_12_grp,
i2c1_13_grp, i2c1_14_grp, i2c1_15_grp,
i2c1_16_grp, i2c1_17_grp, i2c1_18_grp,
i2c1_19_grp, ttc0_clk_0_grp, ttc0_wav_0_grp,
ttc0_clk_1_grp, ttc0_wav_1_grp, ttc0_clk_2_grp,
ttc0_wav_2_grp, ttc0_clk_3_grp, ttc0_wav_3_grp,
ttc0_clk_4_grp, ttc0_wav_4_grp, ttc0_clk_5_grp,
ttc0_wav_5_grp, ttc0_clk_6_grp, ttc0_wav_6_grp,
ttc0_clk_7_grp, ttc0_wav_7_grp, ttc0_clk_8_grp,
ttc0_wav_8_grp, ttc1_clk_0_grp, ttc1_wav_0_grp,
ttc1_clk_1_grp, ttc1_wav_1_grp, ttc1_clk_2_grp,
ttc1_wav_2_grp, ttc1_clk_3_grp, ttc1_wav_3_grp,
ttc1_clk_4_grp, ttc1_wav_4_grp, ttc1_clk_5_grp,
ttc1_wav_5_grp, ttc1_clk_6_grp, ttc1_wav_6_grp,
ttc1_clk_7_grp, ttc1_wav_7_grp, ttc1_clk_8_grp,
ttc1_wav_8_grp, ttc2_clk_0_grp, ttc2_wav_0_grp,
ttc2_clk_1_grp, ttc2_wav_1_grp, ttc2_clk_2_grp,
ttc2_wav_2_grp, ttc2_clk_3_grp, ttc2_wav_3_grp,
ttc2_clk_4_grp, ttc2_wav_4_grp, ttc2_clk_5_grp,
ttc2_wav_5_grp, ttc2_clk_6_grp, ttc2_wav_6_grp,
ttc2_clk_7_grp, ttc2_wav_7_grp, ttc2_clk_8_grp,
ttc2_wav_8_grp, ttc3_clk_0_grp, ttc3_wav_0_grp,
ttc3_clk_1_grp, ttc3_wav_1_grp, ttc3_clk_2_grp,
ttc3_wav_2_grp, ttc3_clk_3_grp, ttc3_wav_3_grp,
ttc3_clk_4_grp, ttc3_wav_4_grp, ttc3_clk_5_grp,
ttc3_wav_5_grp, ttc3_clk_6_grp, ttc3_wav_6_grp,
ttc3_clk_7_grp, ttc3_wav_7_grp, ttc3_clk_8_grp,
ttc3_wav_8_grp, swdt0_clk_0_grp, swdt0_rst_0_grp,
swdt0_clk_1_grp, swdt0_rst_1_grp, swdt0_clk_2_grp,
swdt0_rst_2_grp, swdt0_clk_3_grp, swdt0_rst_3_grp,
swdt0_clk_4_grp, swdt0_rst_4_grp, swdt0_clk_5_grp,
swdt0_rst_5_grp, swdt0_clk_6_grp, swdt0_rst_6_grp,
swdt0_clk_7_grp, swdt0_rst_7_grp, swdt0_clk_8_grp,
swdt0_rst_8_grp, swdt0_clk_9_grp, swdt0_rst_9_grp,
swdt0_clk_10_grp, swdt0_rst_10_grp, swdt0_clk_11_grp,
swdt0_rst_11_grp, swdt0_clk_12_grp, swdt0_rst_12_grp,
swdt1_clk_0_grp, swdt1_rst_0_grp, swdt1_clk_1_grp,
swdt1_rst_1_grp, swdt1_clk_2_grp, swdt1_rst_2_grp,
swdt1_clk_3_grp, swdt1_rst_3_grp, swdt1_clk_4_grp,
swdt1_rst_4_grp, swdt1_clk_5_grp, swdt1_rst_5_grp,
swdt1_clk_6_grp, swdt1_rst_6_grp, swdt1_clk_7_grp,
swdt1_rst_7_grp, swdt1_clk_8_grp, swdt1_rst_8_grp,
swdt1_clk_9_grp, swdt1_rst_9_grp, swdt1_clk_10_grp,
swdt1_rst_10_grp, swdt1_clk_11_grp, swdt1_rst_11_grp,
swdt1_clk_12_grp, swdt1_rst_12_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, gpio0_54_grp,
gpio0_55_grp, gpio0_56_grp, gpio0_57_grp,
gpio0_58_grp, gpio0_59_grp, gpio0_60_grp,
gpio0_61_grp, gpio0_62_grp, gpio0_63_grp,
gpio0_64_grp, gpio0_65_grp, gpio0_66_grp,
gpio0_67_grp, gpio0_68_grp, gpio0_69_grp,
gpio0_70_grp, gpio0_71_grp, gpio0_72_grp,
gpio0_73_grp, gpio0_74_grp, gpio0_75_grp,
gpio0_76_grp, gpio0_77_grp, usb0_0_grp,
usb1_0_grp, pmu0_0_grp, pmu0_1_grp,
pmu0_2_grp, pmu0_3_grp, pmu0_4_grp,
pmu0_5_grp, pmu0_6_grp, pmu0_7_grp,
pmu0_8_grp, pmu0_9_grp, pmu0_10_grp,
pmu0_11_grp, pcie0_0_grp, pcie0_1_grp,
pcie0_2_grp, pcie0_3_grp, pcie0_4_grp,
pcie0_5_grp, pcie0_6_grp, pcie0_7_grp,
csu0_0_grp, csu0_1_grp, csu0_2_grp,
csu0_3_grp, csu0_4_grp, csu0_5_grp,
csu0_6_grp, csu0_7_grp, csu0_8_grp,
csu0_9_grp, csu0_10_grp, csu0_11_grp,
dpaux0_0_grp, dpaux0_1_grp, dpaux0_2_grp,
dpaux0_3_grp, pjtag0_0_grp, pjtag0_1_grp,
pjtag0_2_grp, pjtag0_3_grp, pjtag0_4_grp,
pjtag0_5_grp, trace0_0_grp, trace0_clk_0_grp,
trace0_1_grp, trace0_clk_1_grp, trace0_2_grp,
trace0_clk_2_grp, testscan0_0_grp]
maxItems: 78
function:
description:
Specify the alternative function to be configured for the
given pin groups.
enum: [ethernet0, ethernet1, ethernet2, ethernet3, gemtsu0, usb0, usb1, mdio0,
mdio1, mdio2, mdio3, qspi0, qspi_fbclk, qspi_ss, spi0, spi1, spi0_ss,
spi1_ss, sdio0, sdio0_pc, sdio0_wp, sdio0_cd, sdio1, sdio1_pc, sdio1_wp,
sdio1_cd, nand0, nand0_ce, nand0_rb, nand0_dqs, can0, can1, uart0, uart1,
i2c0, i2c1, ttc0_clk, ttc0_wav, ttc1_clk, ttc1_wav, ttc2_clk, ttc2_wav,
ttc3_clk, ttc3_wav, swdt0_clk, swdt0_rst, swdt1_clk, swdt1_rst, gpio0, pmu0,
pcie0, csu0, dpaux0, pjtag0, trace0, trace0_clk, testscan0]
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.
$ref: pincfg-node.yaml#
properties:
groups:
description:
List of pin groups as mentioned above.
pins:
description:
List of pin names to select in this subnode.
items:
pattern: '^MIO([0-9]|[1-6][0-9]|7[0-7])$'
maxItems: 78
bias-pull-up: true
bias-pull-down: true
bias-disable: true
input-schmitt-enable: true
input-schmitt-disable: true
bias-high-impedance: true
low-power-enable: true
low-power-disable: true
slew-rate:
enum: [0, 1]
drive-strength:
description:
Selects the drive strength for MIO pins, in mA.
enum: [2, 4, 8, 12]
power-source:
enum: [0, 1]
oneOf:
- required: [ groups ]
- required: [ pins ]
additionalProperties: false
additionalProperties: false
required:
- compatible
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/pinctrl-zynqmp.h>
zynqmp_firmware: zynqmp-firmware {
pinctrl0: pinctrl {
compatible = "xlnx,zynqmp-pinctrl";
pinctrl_uart1_default: uart1-default {
mux {
groups = "uart0_4_grp", "uart0_5_grp";
function = "uart0";
};
conf {
groups = "uart0_4_grp";
slew-rate = <SLEW_RATE_SLOW>;
power-source = <IO_STANDARD_LVCMOS18>;
};
conf-rx {
pins = "MIO18";
bias-pull-up;
};
conf-tx {
pins = "MIO19";
bias-disable;
input-schmitt-disable;
};
};
};
};
uart1 {
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_uart1_default>;
};
...
/* SPDX-License-Identifier: GPL-2.0 */
/*
* MIO pin configuration defines for Xilinx ZynqMP
*
* Copyright (C) 2020 Xilinx, Inc.
*/
#ifndef _DT_BINDINGS_PINCTRL_ZYNQMP_H
#define _DT_BINDINGS_PINCTRL_ZYNQMP_H
/* Bit value for different voltage levels */
#define IO_STANDARD_LVCMOS33 0
#define IO_STANDARD_LVCMOS18 1
/* Bit values for Slew Rates */
#define SLEW_RATE_FAST 0
#define SLEW_RATE_SLOW 1
#endif /* _DT_BINDINGS_PINCTRL_ZYNQMP_H */
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