| Tom Rini | 53633a8 | 2024-02-29 12:33:36 -0500 | [diff] [blame] | 1 | # SPDX-License-Identifier: (GPL-2.0-only OR BSD-2-Clause) |
| 2 | %YAML 1.2 |
| 3 | --- |
| 4 | $id: http://devicetree.org/schemas/display/panel/samsung,lms397kf04.yaml# |
| 5 | $schema: http://devicetree.org/meta-schemas/core.yaml# |
| 6 | |
| 7 | title: Samsung LMS397KF04 display panel |
| 8 | |
| 9 | description: The datasheet claims this is based around a display controller |
| 10 | named DB7430 with a separate backlight controller. |
| 11 | |
| 12 | maintainers: |
| 13 | - Linus Walleij <linus.walleij@linaro.org> |
| 14 | |
| 15 | allOf: |
| 16 | - $ref: panel-common.yaml# |
| 17 | - $ref: /schemas/spi/spi-peripheral-props.yaml# |
| 18 | |
| 19 | properties: |
| 20 | compatible: |
| 21 | const: samsung,lms397kf04 |
| 22 | |
| 23 | reg: true |
| 24 | |
| 25 | reset-gpios: true |
| 26 | |
| 27 | vci-supply: |
| 28 | description: regulator that supplies the VCI analog voltage |
| 29 | usually around 3.0 V |
| 30 | |
| 31 | vccio-supply: |
| 32 | description: regulator that supplies the VCCIO voltage usually |
| 33 | around 1.8 V |
| 34 | |
| 35 | backlight: true |
| 36 | |
| 37 | spi-cpha: true |
| 38 | |
| 39 | spi-cpol: true |
| 40 | |
| 41 | spi-max-frequency: |
| 42 | description: inherited as a SPI client node, the datasheet specifies |
| 43 | maximum 300 ns minimum cycle which gives around 3 MHz max frequency |
| 44 | maximum: 3000000 |
| 45 | |
| 46 | port: true |
| 47 | |
| 48 | required: |
| 49 | - compatible |
| 50 | - reg |
| 51 | - spi-cpha |
| 52 | - spi-cpol |
| 53 | - port |
| 54 | |
| 55 | unevaluatedProperties: false |
| 56 | |
| 57 | examples: |
| 58 | - | |
| 59 | #include <dt-bindings/gpio/gpio.h> |
| 60 | |
| 61 | spi { |
| 62 | compatible = "spi-gpio"; |
| 63 | sck-gpios = <&gpio 0 GPIO_ACTIVE_HIGH>; |
| 64 | miso-gpios = <&gpio 1 GPIO_ACTIVE_HIGH>; |
| 65 | mosi-gpios = <&gpio 2 GPIO_ACTIVE_HIGH>; |
| 66 | cs-gpios = <&gpio 3 GPIO_ACTIVE_HIGH>; |
| 67 | num-chipselects = <1>; |
| 68 | #address-cells = <1>; |
| 69 | #size-cells = <0>; |
| 70 | panel@0 { |
| 71 | compatible = "samsung,lms397kf04"; |
| 72 | spi-max-frequency = <3000000>; |
| 73 | spi-cpha; |
| 74 | spi-cpol; |
| 75 | reg = <0>; |
| 76 | vci-supply = <&lcd_3v0_reg>; |
| 77 | vccio-supply = <&lcd_1v8_reg>; |
| 78 | reset-gpios = <&gpio 4 GPIO_ACTIVE_LOW>; |
| 79 | backlight = <&ktd259>; |
| 80 | |
| 81 | port { |
| 82 | panel_in: endpoint { |
| 83 | remote-endpoint = <&display_out>; |
| 84 | }; |
| 85 | }; |
| 86 | }; |
| 87 | }; |
| 88 | |
| 89 | ... |