276 lines
6.8 KiB
YAML
276 lines
6.8 KiB
YAML
# SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause)
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%YAML 1.2
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---
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$id: http://devicetree.org/schemas/display/solomon,ssd1307fb.yaml#
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$schema: http://devicetree.org/meta-schemas/core.yaml#
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title: Solomon SSD1307 OLED Controller Framebuffer
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maintainers:
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- Maxime Ripard <mripard@kernel.org>
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- Javier Martinez Canillas <javierm@redhat.com>
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properties:
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compatible:
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oneOf:
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# Deprecated compatible strings
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- enum:
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- solomon,ssd1305fb-i2c
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- solomon,ssd1306fb-i2c
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- solomon,ssd1307fb-i2c
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- solomon,ssd1309fb-i2c
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deprecated: true
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- enum:
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- sinowealth,sh1106
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- solomon,ssd1305
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- solomon,ssd1306
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- solomon,ssd1307
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- solomon,ssd1309
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reg:
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maxItems: 1
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pwms:
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maxItems: 1
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reset-gpios:
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maxItems: 1
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# Only required for SPI
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dc-gpios:
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description:
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GPIO connected to the controller's D/C# (Data/Command) pin,
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that is needed for 4-wire SPI to tell the controller if the
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data sent is for a command register or the display data RAM
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maxItems: 1
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vbat-supply:
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description: The supply for VBAT
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solomon,height:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 16
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description:
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Height in pixel of the screen driven by the controller
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solomon,width:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 96
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description:
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Width in pixel of the screen driven by the controller
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solomon,page-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 1
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description:
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Offset of pages (band of 8 pixels) that the screen is mapped to
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solomon,segment-no-remap:
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type: boolean
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description:
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Display needs normal (non-inverted) data column to segment mapping
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solomon,col-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 0
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description:
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Offset of columns (COL/SEG) that the screen is mapped to
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solomon,com-seq:
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type: boolean
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description:
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Display uses sequential COM pin configuration
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solomon,com-lrremap:
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type: boolean
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description:
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Display uses left-right COM pin remap
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solomon,com-invdir:
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type: boolean
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description:
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Display uses inverted COM pin scan direction
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solomon,com-offset:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 0
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description:
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Number of the COM pin wired to the first display line
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solomon,prechargep1:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 2
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description:
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Length of deselect period (phase 1) in clock cycles
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solomon,prechargep2:
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$ref: /schemas/types.yaml#/definitions/uint32
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default: 2
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description:
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Length of precharge period (phase 2) in clock cycles. This needs to be
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the higher, the higher the capacitance of the OLED's pixels is.
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solomon,dclk-div:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 1
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maximum: 16
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description:
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Clock divisor. The default value is controller-dependent.
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solomon,dclk-frq:
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$ref: /schemas/types.yaml#/definitions/uint32
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minimum: 0
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maximum: 15
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description:
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Clock frequency, higher value means higher frequency.
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The default value is controller-dependent.
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solomon,lookup-table:
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$ref: /schemas/types.yaml#/definitions/uint8-array
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maxItems: 4
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description:
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8 bit value array of current drive pulse widths for BANK0, and colors A,
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B, and C. Each value in range of 31 to 63 for pulse widths of 32 to 64.
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Color D is always width 64.
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solomon,area-color-enable:
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type: boolean
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description:
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Display uses color mode
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solomon,low-power:
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type: boolean
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description:
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Display runs in low power mode
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required:
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- compatible
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- reg
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allOf:
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- $ref: /schemas/spi/spi-peripheral-props.yaml#
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- if:
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properties:
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compatible:
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contains:
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const: sinowealth,sh1106
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then:
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properties:
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solomon,dclk-div:
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default: 1
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solomon,dclk-frq:
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default: 5
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- if:
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properties:
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compatible:
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contains:
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enum:
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- solomon,ssd1305-i2c
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- solomon,ssd1305
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then:
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properties:
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solomon,dclk-div:
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default: 1
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solomon,dclk-frq:
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default: 7
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- if:
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properties:
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compatible:
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contains:
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enum:
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- solomon,ssd1306-i2c
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- solomon,ssd1306
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then:
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properties:
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solomon,dclk-div:
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default: 1
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solomon,dclk-frq:
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default: 8
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- if:
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properties:
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compatible:
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contains:
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enum:
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- solomon,ssd1307-i2c
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- solomon,ssd1307
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then:
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properties:
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solomon,dclk-div:
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default: 2
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solomon,dclk-frq:
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default: 12
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required:
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- pwms
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- if:
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properties:
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compatible:
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contains:
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enum:
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- solomon,ssd1309-i2c
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- solomon,ssd1309
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then:
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properties:
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solomon,dclk-div:
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default: 1
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solomon,dclk-frq:
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default: 10
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unevaluatedProperties: false
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examples:
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- |
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i2c {
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#address-cells = <1>;
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#size-cells = <0>;
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ssd1307_i2c: oled@3c {
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compatible = "solomon,ssd1307";
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reg = <0x3c>;
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pwms = <&pwm 4 3000>;
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reset-gpios = <&gpio2 7>;
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};
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ssd1306_i2c: oled@3d {
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compatible = "solomon,ssd1306";
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reg = <0x3d>;
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pwms = <&pwm 4 3000>;
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reset-gpios = <&gpio2 7>;
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solomon,com-lrremap;
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solomon,com-invdir;
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solomon,com-offset = <32>;
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solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
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};
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};
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- |
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spi {
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#address-cells = <1>;
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#size-cells = <0>;
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ssd1307_spi: oled@0 {
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compatible = "solomon,ssd1307";
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reg = <0x0>;
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pwms = <&pwm 4 3000>;
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reset-gpios = <&gpio2 7>;
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dc-gpios = <&gpio2 8>;
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spi-max-frequency = <10000000>;
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};
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ssd1306_spi: oled@1 {
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compatible = "solomon,ssd1306";
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reg = <0x1>;
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pwms = <&pwm 4 3000>;
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reset-gpios = <&gpio2 7>;
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dc-gpios = <&gpio2 8>;
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spi-max-frequency = <10000000>;
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solomon,com-lrremap;
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solomon,com-invdir;
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solomon,com-offset = <32>;
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solomon,lookup-table = /bits/ 8 <0x3f 0x3f 0x3f 0x3f>;
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};
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};
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