forked from Qortal/Brooklyn
You can not select more than 25 topics
Topics must start with a letter or number, can include dashes ('-') and can be up to 35 characters long.
404 lines
10 KiB
404 lines
10 KiB
# SPDX-License-Identifier: GPL-2.0-only OR BSD-2-Clause |
|
%YAML 1.2 |
|
--- |
|
$id: http://devicetree.org/schemas/leds/leds-bcm6328.yaml# |
|
$schema: http://devicetree.org/meta-schemas/core.yaml# |
|
|
|
title: LEDs connected to Broadcom BCM6328 controller |
|
|
|
maintainers: |
|
- Álvaro Fernández Rojas <[email protected]> |
|
|
|
description: | |
|
This controller is present on BCM6318, BCM6328, BCM6362 and BCM63268. |
|
In these SoCs it's possible to control LEDs both as GPIOs or by hardware. |
|
However, on some devices there are Serial LEDs (LEDs connected to a 74x164 |
|
controller), which can either be controlled by software (exporting the 74x164 |
|
as spi-gpio. See |
|
Documentation/devicetree/bindings/gpio/fairchild,74hc595.yaml), or by hardware |
|
using this driver. |
|
Some of these Serial LEDs are hardware controlled (e.g. ethernet LEDs) and |
|
exporting the 74x164 as spi-gpio prevents those LEDs to be hardware |
|
controlled, so the only chance to keep them working is by using this driver. |
|
|
|
BCM6328 LED controller has a HWDIS register, which controls whether a LED |
|
should be controlled by a hardware signal instead of the MODE register value, |
|
with 0 meaning hardware control enabled and 1 hardware control disabled. This |
|
is usually 1:1 for hardware to LED signals, but through the activity/link |
|
registers you have some limited control over rerouting the LEDs (as |
|
explained later in brcm,link-signal-sources). Even if a LED is hardware |
|
controlled you are still able to make it blink or light it up if it isn't, |
|
but you can't turn it off if the hardware decides to light it up. For this |
|
reason, hardware controlled LEDs aren't registered as LED class devices. |
|
|
|
Each LED is represented as a sub-node of the brcm,bcm6328-leds device. |
|
|
|
properties: |
|
compatible: |
|
const: brcm,bcm6328-leds |
|
|
|
reg: |
|
maxItems: 1 |
|
|
|
brcm,serial-leds: |
|
type: boolean |
|
description: Enables Serial LEDs. |
|
|
|
brcm,serial-mux: |
|
type: boolean |
|
description: Enables Serial LEDs multiplexing. |
|
|
|
brcm,serial-clk-low: |
|
type: boolean |
|
description: Makes clock signal active low. |
|
|
|
brcm,serial-dat-low: |
|
type: boolean |
|
description: Makes data signal active low. |
|
|
|
brcm,serial-shift-inv: |
|
type: boolean |
|
description: Inverts Serial LEDs shift direction. |
|
|
|
"#address-cells": |
|
const: 1 |
|
|
|
"#size-cells": |
|
const: 0 |
|
|
|
patternProperties: |
|
"@[a-f0-9]+$": |
|
type: object |
|
|
|
$ref: common.yaml# |
|
|
|
properties: |
|
reg: |
|
items: |
|
- maximum: 23 |
|
description: LED pin number (only LEDs 0 to 23 are valid). |
|
|
|
active-low: |
|
type: boolean |
|
description: Makes LED active low. |
|
|
|
brcm,hardware-controlled: |
|
type: boolean |
|
description: Makes this LED hardware controlled. |
|
|
|
brcm,link-signal-sources: |
|
$ref: /schemas/types.yaml#/definitions/uint32-array |
|
minItems: 1 |
|
maxItems: 4 |
|
description: > |
|
An array of hardware link signal sources. Up to four link hardware |
|
signals can get muxed into these LEDs. Only valid for LEDs 0 to 7, |
|
where LED signals 0 to 3 may be muxed to LEDs 0 to 3, and signals 4 to |
|
7 may be muxed to LEDs 4 to 7. A signal can be muxed to more than one |
|
LED, and one LED can have more than one source signal. |
|
|
|
brcm,activity-signal-sources: |
|
$ref: /schemas/types.yaml#/definitions/uint32-array |
|
minItems: 1 |
|
maxItems: 4 |
|
description: > |
|
An array of hardware activity signal sources. Up to four activity |
|
hardware signals can get muxed into these LEDs. Only valid for LEDs 0 |
|
to 7, where LED signals 0 to 3 may be muxed to LEDs 0 to 3, and |
|
signals 4 to 7 may be muxed to LEDs 4 to 7. A signal can be muxed to |
|
more than one LED, and one LED can have more than one source signal. |
|
|
|
required: |
|
- reg |
|
|
|
unevaluatedProperties: false |
|
|
|
required: |
|
- reg |
|
- "#address-cells" |
|
- "#size-cells" |
|
|
|
additionalProperties: false |
|
|
|
examples: |
|
- | |
|
/* BCM6328 with 4 EPHY LEDs */ |
|
led-controller@10000800 { |
|
compatible = "brcm,bcm6328-leds"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
reg = <0x10000800 0x24>; |
|
|
|
alarm_red@2 { |
|
reg = <2>; |
|
active-low; |
|
label = "red:alarm"; |
|
}; |
|
|
|
inet_green@3 { |
|
reg = <3>; |
|
active-low; |
|
label = "green:inet"; |
|
}; |
|
|
|
power_green@4 { |
|
reg = <4>; |
|
active-low; |
|
label = "green:power"; |
|
default-state = "on"; |
|
}; |
|
|
|
ephy0_spd@17 { |
|
reg = <17>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy1_spd@18 { |
|
reg = <18>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy2_spd@19 { |
|
reg = <19>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy3_spd@20 { |
|
reg = <20>; |
|
brcm,hardware-controlled; |
|
}; |
|
}; |
|
- | |
|
/* BCM63268 with Serial/GPHY0 LEDs */ |
|
led-controller@10001900 { |
|
compatible = "brcm,bcm6328-leds"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
reg = <0x10001900 0x24>; |
|
brcm,serial-leds; |
|
brcm,serial-dat-low; |
|
brcm,serial-shift-inv; |
|
|
|
gphy0_spd0@0 { |
|
reg = <0>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <0>; |
|
}; |
|
|
|
gphy0_spd1@1 { |
|
reg = <1>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <1>; |
|
}; |
|
|
|
inet_red@2 { |
|
reg = <2>; |
|
active-low; |
|
label = "red:inet"; |
|
}; |
|
|
|
dsl_green@3 { |
|
reg = <3>; |
|
active-low; |
|
label = "green:dsl"; |
|
}; |
|
|
|
usb_green@4 { |
|
reg = <4>; |
|
active-low; |
|
label = "green:usb"; |
|
}; |
|
|
|
wps_green@7 { |
|
reg = <7>; |
|
active-low; |
|
label = "green:wps"; |
|
}; |
|
|
|
inet_green@8 { |
|
reg = <8>; |
|
active-low; |
|
label = "green:inet"; |
|
}; |
|
|
|
ephy0_act@9 { |
|
reg = <9>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy1_act@10 { |
|
reg = <10>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy2_act@11 { |
|
reg = <11>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
gphy0_act@12 { |
|
reg = <12>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy0_spd@13 { |
|
reg = <13>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy1_spd@14 { |
|
reg = <14>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
ephy2_spd@15 { |
|
reg = <15>; |
|
brcm,hardware-controlled; |
|
}; |
|
|
|
power_green@20 { |
|
reg = <20>; |
|
active-low; |
|
label = "green:power"; |
|
default-state = "on"; |
|
}; |
|
}; |
|
- | |
|
/* BCM6362 with 1 LED for each EPHY */ |
|
led-controller@10001900 { |
|
compatible = "brcm,bcm6328-leds"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
reg = <0x10001900 0x24>; |
|
|
|
usb@0 { |
|
reg = <0>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <0>; |
|
brcm,activity-signal-sources = <0>; |
|
/* USB link/activity routed to USB LED */ |
|
}; |
|
|
|
inet@1 { |
|
reg = <1>; |
|
brcm,hardware-controlled; |
|
brcm,activity-signal-sources = <1>; |
|
/* INET activity routed to INET LED */ |
|
}; |
|
|
|
ephy0@4 { |
|
reg = <4>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <4>; |
|
/* EPHY0 link routed to EPHY0 LED */ |
|
}; |
|
|
|
ephy1@5 { |
|
reg = <5>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <5>; |
|
/* EPHY1 link routed to EPHY1 LED */ |
|
}; |
|
|
|
ephy2@6 { |
|
reg = <6>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <6>; |
|
/* EPHY2 link routed to EPHY2 LED */ |
|
}; |
|
|
|
ephy3@7 { |
|
reg = <7>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <7>; |
|
/* EPHY3 link routed to EPHY3 LED */ |
|
}; |
|
|
|
power_green@20 { |
|
reg = <20>; |
|
active-low; |
|
label = "green:power"; |
|
default-state = "on"; |
|
}; |
|
}; |
|
- | |
|
/* BCM6362 with 1 LED for all EPHYs */ |
|
led-controller@10001900 { |
|
compatible = "brcm,bcm6328-leds"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
reg = <0x10001900 0x24>; |
|
|
|
usb@0 { |
|
reg = <0>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <0 1>; |
|
brcm,activity-signal-sources = <0 1>; |
|
/* USB/INET link/activity routed to USB LED */ |
|
}; |
|
|
|
ephy@4 { |
|
reg = <4>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <4 5 6 7>; |
|
/* EPHY0/1/2/3 link routed to EPHY0 LED */ |
|
}; |
|
|
|
power_green@20 { |
|
reg = <20>; |
|
active-low; |
|
label = "green:power"; |
|
default-state = "on"; |
|
}; |
|
}; |
|
- | |
|
/* BCM6362 with EPHY LEDs swapped */ |
|
led-controller@10001900 { |
|
compatible = "brcm,bcm6328-leds"; |
|
#address-cells = <1>; |
|
#size-cells = <0>; |
|
reg = <0x10001900 0x24>; |
|
|
|
usb@0 { |
|
reg = <0>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <0>; |
|
brcm,activity-signal-sources = <0 1>; |
|
/* USB link/act and INET act routed to USB LED */ |
|
}; |
|
|
|
ephy0@4 { |
|
reg = <4>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <7>; |
|
/* EPHY3 link routed to EPHY0 LED */ |
|
}; |
|
|
|
ephy1@5 { |
|
reg = <5>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <6>; |
|
/* EPHY2 link routed to EPHY1 LED */ |
|
}; |
|
|
|
ephy2@6 { |
|
reg = <6>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <5>; |
|
/* EPHY1 link routed to EPHY2 LED */ |
|
}; |
|
|
|
ephy3@7 { |
|
reg = <7>; |
|
brcm,hardware-controlled; |
|
brcm,link-signal-sources = <4>; |
|
/* EPHY0 link routed to EPHY3 LED */ |
|
}; |
|
|
|
power_green@20 { |
|
reg = <20>; |
|
active-low; |
|
label = "green:power"; |
|
default-state = "on"; |
|
}; |
|
};
|
|
|