# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
%YAML 1.2
---
$id: http://devicetree.org/schemas/display/solomon,ssd1307fb.yaml#
$schema: http://devicetree.org/meta-schemas/core.yaml#
title: Solomon SSD1307 OLED Controller Framebuffer
maintainers:
- Maxime Ripard <mripard@kernel.org>
- Javier Martinez Canillas <javierm@redhat.com>
properties:
compatible:
oneOf:
# Deprecated compatible strings
- enum:
- solomon,ssd1305fb-i2c
- solomon,ssd1306fb-i2c
- solomon,ssd1307fb-i2c
- solomon,ssd1309fb-i2c
deprecated: true
- enum:
- sinowealth,sh1106
- solomon,ssd1305
- solomon,ssd1306
- solomon,ssd1307
- solomon,ssd1309
reg:
maxItems: 1
pwms:
maxItems: 1
reset-gpios:
maxItems: 1
# Only required for SPI
dc-gpios:
description:
GPIO connected to the controller's D/C# (Data/Command) pin,
that is needed for 4-wire SPI to tell the controller if the
data sent is for a command register or the display data RAM
maxItems: 1
vbat-supply:
description: The supply for VBAT
solomon,height:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Height in pixel of the screen driven by the controller.
The default value is controller-dependent.
solomon,width:
$ref: /schemas/types.yaml#/definitions/uint32
description:
Width in pixel of the screen driven by the controller.
The default value is controller-dependent.
solomon,page-offset:
$ref: /schemas/types.yaml#/definitions/uint32
default: 1
description:
Offset of pages (band of 8 pixels) that the screen is mapped to
solomon,segment-no-remap:
type: boolean
description:
Display needs normal (non-inverted) data column to segment mapping
solomon,col-offset:
$ref: /schemas/types.yaml#/definitions/uint32
default: 0
description:
Offset of columns (COL/SEG) that the screen is mapped to
solomon,com-seq:
type: boolean
description:
Display uses sequential COM pin configuration
solomon,com-lrremap:
type: boolean
description:
Display uses left-right COM pin remap
solomon,com-invdir:
type: boolean
description:
Display uses inverted COM pin scan direction
solomon,com-offset:
$ref: /schemas/types.yaml#/definitions/uint32
default: 0
description:
Number of the COM pin wired to the first display line
solomon,prechargep1:
$ref: /schemas/types.yaml#/definitions/uint32
default: 2
description:
Length of deselect period (phase 1) in clock cycles
solomon,prechargep2:
$ref: /schemas/types.yaml#/definitions/uint32
default: 2
description:
Length of precharge period (phase 2) in clock cycles. This needs to be
the higher, the higher the capacitance of the OLED's pixels is.
solomon,dclk-div:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 1
maximum: 16
description:
Clock divisor. The default value is controller-dependent.
solomon,dclk-frq:
$ref: /schemas/types.yaml#/definitions/uint32
minimum: 0
maximum: 15
description:
Clock frequency, higher value means higher frequency.
The default value is controller-dependent.
solomon,lookup-table:
$ref: /schemas/types.yaml#/definitions/uint8-array
maxItems: 4
description:
8 bit value array of current drive pulse widths for BANK0, and colors A,
B, and C. Each value in range of 31 to 63 for pulse widths of 32 to 64.
Color D is always width 64.
solomon,area-color-enable:
type: boolean
description:
Display uses color mode
solomon,low-power:
type: boolean
description:
Display runs in low power mode
required:
- compatible
- reg
allOf:
- $ref: /schemas/spi/spi-peripheral-props.yaml#
- if:
properties:
compatible:
contains:
const: sinowealth,sh1106
then:
properties:
width:
default: 132
height:
default: 64
solomon,dclk-div:
default: 1
solomon,dclk-frq:
default: 5
- if:
properties:
compatible:
contains:
enum:
- solomon,ssd1305-i2c
- solomon,ssd1305
then:
properties:
width:
default: 132
height:
default: 64
solomon,dclk-div:
default: 1
solomon,dclk-frq:
default: 7
- if:
properties:
compatible:
contains:
enum:
- solomon,ssd1306-i2c
- solomon,ssd1306
then:
properties:
width:
default: 128
height:
default: 64
solomon,dclk-div:
default: 1
solomon,dclk-frq:
default: 8
- if:
properties:
compatible:
contains:
enum:
- solomon,ssd1307-i2c
- solomon,ssd1307
then:
properties:
width:
default: 128
height:
default: 39
solomon,dclk-div:
default: 2
solomon,dclk-frq:
default: 12
required:
- pwms
- if:
properties:
compatible:
contains:
enum:
- solomon,ssd1309-i2c
- solomon,ssd1309
then:
properties:
width:
default: 128
height:
default: 64
solomon,dclk-div:
default: 1
solomon,dclk-frq:
default: 10
unevaluatedProperties: false
examples:
- |
i2c {
#address-cells = <1>;
#size-cells = <0>;
ssd1307_i2c: oled@3c {
compatible = "solomon,ssd1307";
reg = <0x3c>;
pwms = <&pwm 4 3000>;
reset-gpios = <&gpio2 7>;
};
ssd1306_i2c: oled@3d {
compatible = "solomon,ssd1306";
reg = <0x3d>;
pwms = <&pwm 4 3000>;
reset-gpios = <&gpio2 7>;
solomon,com-lrremap;
solomon,com-invdir;
solomon,com-offset = <32>;
solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
};
};
- |
spi {
#address-cells = <1>;
#size-cells = <0>;
ssd1307_spi: oled@0 {
compatible = "solomon,ssd1307";
reg = <0x0>;
pwms = <&pwm 4 3000>;
reset-gpios = <&gpio2 7>;
dc-gpios = <&gpio2 8>;
spi-max-frequency = <10000000>;
};
ssd1306_spi: oled@1 {
compatible = "solomon,ssd1306";
reg = <0x1>;
pwms = <&pwm 4 3000>;
reset-gpios = <&gpio2 7>;
dc-gpios = <&gpio2 8>;
spi-max-frequency = <10000000>;
solomon,com-lrremap;
solomon,com-invdir;
solomon,com-offset = <32>;
solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
};
};