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# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/pinctrl/canaan,k210-fpioa.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Canaan Kendryte K210 FPIOA Device Tree Bindings
maintainers:
- Damien Le Moal <damien.lemoal@wdc.com>
description:
The Canaan Kendryte K210 SoC Fully Programmable IO Array (FPIOA)
controller allows assiging any of 256 possible functions to any of
48 IO pins of the SoC. Pin function configuration is performed on
a per-pin basis.
properties:
compatible:
const: canaan,k210-fpioa
reg:
maxItems: 1
description:
Address and length of the register set for the FPIOA controller.
clocks:
items:
- description: Controller reference clock source
- description: APB interface clock source
clock-names:
items:
- const: ref
- const: pclk
resets:
maxItems: 1
canaan,k210-sysctl-power:
$ref: /schemas/types.yaml#/definitions/phandle-array
description: |
phandle of the K210 system controller node and offset of its
power domain control register.
patternProperties:
'-pinmux$':
type: object
$ref: /schemas/pinctrl/pinmux-node.yaml
description:
FPIOA client devices use sub-nodes to define the desired pin
configuration. Client device sub-nodes use the pinux property
below.
properties:
pinmux:
description:
List of IO pins alternate functions. The values for each IO
pin is a combination of an IO pin number (0 to 47) with the
desired function for the IO pin. Functions are defined as
macros in include/dt-bindings/pinctrl/k210-fpioa.h.
The K210_FPIOA(IO pin, function) macro is provided to
facilitate the combination of IO pin numbers and functions.
required:
- pinmux
additionalProperties: false
'-pins$':
type: object
$ref: /schemas/pinctrl/pincfg-node.yaml
description:
FPIOA client devices use sub-nodes to define the desired
configuration of pins. Client device sub-nodes use the
properties below.
properties:
pins:
description:
List of IO pins affected by the properties specified in this
subnode. IO pins are identified using the pin names "IO_xx".
Pin configuration nodes can also define the power domain to
be used for the SoC pin groups A0 (IO pins 0-5),
A1 (IO pins 6-11), A2 (IO pins 12-17), B0 (IO pins 18-23),
B1 (IO pins 24-29), B2 (IO pins 30-35), B3 (IO pins 30-35),
C0 (IO pins 36-41) and C1 (IO pins 42-47) using the
power-source property.
items:
anyOf:
- pattern: "^(IO_([0-9]*))|(A[0-2])|(B[3-5])|(C[6-7])$"
- enum: [ IO_0, IO_1, IO_2, IO_3, IO_4, IO_5, IO_6, IO_7,
IO_8, IO_9, IO_10, IO_11, IO_12, IO_13, IO_14,
IO_15, IO_16, IO_17, IO_18, IO_19, IO_20, IO_21,
IO_22, IO_23, IO_24, IO_25, IO_26, IO_27, IO_28,
IO_29, IO_30, IO_31, IO_32, IO_33, IO_34, IO_35,
IO_36, IO_37, IO_38, IO_39, IO_40, IO_41, IO_42,
IO_43, IO_44, IO_45, IO_46, IO_47,
A0, A1, A2, B3, B4, B5, C6, C7 ]
bias-disable: true
bias-pull-down: true
bias-pull-up: true
drive-strength: true
drive-strength-microamp: true
input-enable: true
input-disable: true
input-schmitt-enable: true
input-schmitt-disable: true
input-polarity-invert:
description:
Enable or disable pin input polarity inversion.
output-enable: true
output-disable: true
output-high: true
output-low: true
output-polarity-invert:
description:
Enable or disable pin output polarity inversion.
slew-rate: true
power-source: true
additionalProperties: false
required:
- compatible
- reg
- clocks
- canaan,k210-sysctl-power
additionalProperties: false
examples:
- |
#include <dt-bindings/pinctrl/k210-fpioa.h>
#include <dt-bindings/clock/k210-clk.h>
#include <dt-bindings/reset/k210-rst.h>
fpioa: pinmux@502B0000 {
compatible = "canaan,k210-fpioa";
reg = <0x502B0000 0x100>;
clocks = <&sysclk K210_CLK_FPIOA>,
<&sysclk K210_CLK_APB0>;
clock-names = "ref", "pclk";
resets = <&sysrst K210_RST_FPIOA>;
canaan,k210-sysctl-power = <&sysctl 108>;
pinctrl-0 = <&jtag_pinctrl>;
pinctrl-names = "default";
jtag_pinctrl: jtag-pinmux {
pinmux = <K210_FPIOA(0, K210_PCF_JTAG_TCLK)>,
<K210_FPIOA(1, K210_PCF_JTAG_TDI)>,
<K210_FPIOA(2, K210_PCF_JTAG_TMS)>,
<K210_FPIOA(3, K210_PCF_JTAG_TDO)>;
};
};
|
