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+# 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>
+
+properties:
+ compatible:
+ enum:
+ - solomon,ssd1305fb-i2c
+ - solomon,ssd1306fb-i2c
+ - solomon,ssd1307fb-i2c
+ - solomon,ssd1309fb-i2c
+
+ reg:
+ maxItems: 1
+
+ pwms:
+ maxItems: 1
+
+ reset-gpios:
+ maxItems: 1
+
+ vbat-supply:
+ description: The supply for VBAT
+
+ solomon,height:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 16
+ description:
+ Height in pixel of the screen driven by the controller
+
+ solomon,width:
+ $ref: /schemas/types.yaml#/definitions/uint32
+ default: 96
+ description:
+ Width in pixel of the screen driven by the controller
+
+ 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:
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: solomon,ssd1305fb-i2c
+ then:
+ properties:
+ solomon,dclk-div:
+ default: 1
+ solomon,dclk-frq:
+ default: 7
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: solomon,ssd1306fb-i2c
+ then:
+ properties:
+ solomon,dclk-div:
+ default: 1
+ solomon,dclk-frq:
+ default: 8
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: solomon,ssd1307fb-i2c
+ then:
+ properties:
+ solomon,dclk-div:
+ default: 2
+ solomon,dclk-frq:
+ default: 12
+ required:
+ - pwms
+
+ - if:
+ properties:
+ compatible:
+ contains:
+ const: solomon,ssd1309fb-i2c
+ then:
+ properties:
+ solomon,dclk-div:
+ default: 1
+ solomon,dclk-frq:
+ default: 10
+
+additionalProperties: false
+
+examples:
+ - |
+ i2c1 {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ssd1307: oled@3c {
+ compatible = "solomon,ssd1307fb-i2c";
+ reg = <0x3c>;
+ pwms = <&pwm 4 3000>;
+ reset-gpios = <&gpio2 7>;
+ };
+
+ ssd1306: oled@3d {
+ compatible = "solomon,ssd1306fb-i2c";
+ reg = <0x3c>;
+ 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>;
+ };
+ };