153 lines
3.5 KiB
YAML
153 lines
3.5 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
|
|
%YAML 1.2
|
|
---
|
|
$id: http://devicetree.org/schemas/display/tegra/nvidia,tegra124-dpaux.yaml#
|
|
$schema: http://devicetree.org/meta-schemas/core.yaml#
|
|
|
|
title: NVIDIA Tegra DisplayPort AUX Interface
|
|
|
|
maintainers:
|
|
- Thierry Reding <thierry.reding@gmail.com>
|
|
- Jon Hunter <jonathanh@nvidia.com>
|
|
|
|
description: |
|
|
The Tegra Display Port Auxiliary (DPAUX) pad controller manages two
|
|
pins which can be assigned to either the DPAUX channel or to an I2C
|
|
controller.
|
|
|
|
When configured for DisplayPort AUX operation, the DPAUX controller
|
|
can also be used to communicate with a DisplayPort device using the
|
|
AUX channel.
|
|
|
|
properties:
|
|
$nodename:
|
|
pattern: "^dpaux@[0-9a-f]+$"
|
|
|
|
compatible:
|
|
oneOf:
|
|
- enum:
|
|
- nvidia,tegra124-dpaux
|
|
- nvidia,tegra210-dpaux
|
|
- nvidia,tegra186-dpaux
|
|
- nvidia,tegra194-dpaux
|
|
|
|
- items:
|
|
- const: nvidia,tegra132-dpaux
|
|
- const: nvidia,tegra124-dpaux
|
|
|
|
reg:
|
|
maxItems: 1
|
|
|
|
interrupts:
|
|
maxItems: 1
|
|
|
|
clocks:
|
|
items:
|
|
- description: clock input for the DPAUX hardware
|
|
- description: reference clock
|
|
|
|
clock-names:
|
|
items:
|
|
- const: dpaux
|
|
- const: parent
|
|
|
|
resets:
|
|
items:
|
|
- description: module reset
|
|
|
|
reset-names:
|
|
items:
|
|
- const: dpaux
|
|
|
|
power-domains:
|
|
maxItems: 1
|
|
|
|
i2c-bus:
|
|
description: Subnode where I2C slave devices are listed. This
|
|
subnode must be always present. If there are no I2C slave
|
|
devices, an empty node should be added. See ../../i2c/i2c.yaml
|
|
for more information.
|
|
type: object
|
|
|
|
aux-bus:
|
|
$ref: /schemas/display/dp-aux-bus.yaml#
|
|
|
|
vdd-supply:
|
|
description: phandle of a supply that powers the DisplayPort
|
|
link
|
|
|
|
patternProperties:
|
|
"^pinmux-[a-z0-9]+$":
|
|
description:
|
|
Since only three configurations are possible, only three child
|
|
nodes are needed to describe the pin mux'ing options for the
|
|
DPAUX pads. Furthermore, given that the pad functions are only
|
|
applicable to a single set of pads, the child nodes only need
|
|
to describe the pad group the functions are being applied to
|
|
rather than the individual pads.
|
|
type: object
|
|
properties:
|
|
groups:
|
|
const: dpaux-io
|
|
|
|
function:
|
|
enum:
|
|
- aux
|
|
- i2c
|
|
- off
|
|
|
|
additionalProperties: false
|
|
|
|
required:
|
|
- groups
|
|
- function
|
|
|
|
additionalProperties: false
|
|
|
|
required:
|
|
- compatible
|
|
- reg
|
|
- interrupts
|
|
- clocks
|
|
- clock-names
|
|
- resets
|
|
- reset-names
|
|
|
|
examples:
|
|
- |
|
|
#include <dt-bindings/clock/tegra210-car.h>
|
|
#include <dt-bindings/interrupt-controller/arm-gic.h>
|
|
|
|
dpaux: dpaux@545c0000 {
|
|
compatible = "nvidia,tegra210-dpaux";
|
|
reg = <0x545c0000 0x00040000>;
|
|
interrupts = <GIC_SPI 159 IRQ_TYPE_LEVEL_HIGH>;
|
|
clocks = <&tegra_car TEGRA210_CLK_DPAUX>,
|
|
<&tegra_car TEGRA210_CLK_PLL_DP>;
|
|
clock-names = "dpaux", "parent";
|
|
resets = <&tegra_car 181>;
|
|
reset-names = "dpaux";
|
|
power-domains = <&pd_sor>;
|
|
status = "disabled";
|
|
|
|
state_dpaux_aux: pinmux-aux {
|
|
groups = "dpaux-io";
|
|
function = "aux";
|
|
};
|
|
|
|
state_dpaux_i2c: pinmux-i2c {
|
|
groups = "dpaux-io";
|
|
function = "i2c";
|
|
};
|
|
|
|
state_dpaux_off: pinmux-off {
|
|
groups = "dpaux-io";
|
|
function = "off";
|
|
};
|
|
|
|
i2c-bus {
|
|
#address-cells = <1>;
|
|
#size-cells = <0>;
|
|
};
|
|
};
|