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Linux/Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml

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Diff markup

Differences between /Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml (Version linux-6.12-rc7) and /Documentation/devicetree/bindings/display/panel/panel-mipi-dbi-spi.yaml (Version linux-5.14.21)


  1 # SPDX-License-Identifier: (GPL-2.0-only OR BS    
  2 %YAML 1.2                                         
  3 ---                                               
  4 $id: http://devicetree.org/schemas/display/pan    
  5 $schema: http://devicetree.org/meta-schemas/co    
  6                                                   
  7 title: MIPI DBI SPI Panel                         
  8                                                   
  9 maintainers:                                      
 10   - Noralf Trønnes <noralf@tronnes.org>           
 11                                                   
 12 description: |                                    
 13   This binding is for display panels using a M    
 14   in SPI mode.                                    
 15                                                   
 16   The MIPI Alliance Standard for Display Bus I    
 17   and logical interfaces for display controlle    
 18   phones. The standard defines 4 display archi    
 19   for type 1 which has full frame memory. Ther    
 20   standard and type C is the serial interface.    
 21                                                   
 22   The standard defines the following interface    
 23   - Power:                                        
 24     - Vdd: Power supply for display module        
 25       Called power-supply in this binding.        
 26     - Vddi: Logic level supply for interface s    
 27       Called io-supply in this binding.           
 28   - Interface:                                    
 29     - CSx: Chip select                            
 30     - SCL: Serial clock                           
 31     - Dout: Serial out                            
 32     - Din: Serial in                              
 33     - SDA: Bidrectional in/out                    
 34     - D/CX: Data/command selection, high=data,    
 35       Called dc-gpios in this binding.            
 36     - RESX: Reset when low                        
 37       Called reset-gpios in this binding.         
 38                                                   
 39   The type C interface has 3 options:             
 40                                                   
 41     - Option 1: 9-bit mode and D/CX as the 9th    
 42       |              Command              |  t    
 43       |<0><D7><D6><D5><D4><D3><D2><D1><D0>|<D/    
 44                                                   
 45     - Option 2: 16-bit mode and D/CX as a 9th     
 46       |              Command or data              
 47       |<X><X><X><X><X><X><X><D/CX><D7><D6><D5>    
 48                                                   
 49     - Option 3: 8-bit mode and D/CX as a separ    
 50       |        Command or data         |          
 51       |<D7><D6><D5><D4><D3><D2><D1><D0>|          
 52                                                   
 53   The standard defines one pixel format for ty    
 54   however has decided to provide the type A/B     
 55   the Type C interface and most common among t    
 56   The MIPI DCS command set_address_mode (36h)     
 57   order. This gives each supported RGB format     
 58                                                   
 59   The panel resolution is specified using the     
 60   hactive (width) and vactive (height). The ot    
 61   properties should be set to zero except cloc    
 62   optionally set to inform about the actual pi    
 63                                                   
 64   If the panel is wired to the controller at a    
 65   hback-porch (x-offset) and vback-porch (y-of    
 66                                                   
 67 allOf:                                            
 68   - $ref: panel-common.yaml#                      
 69   - $ref: /schemas/spi/spi-peripheral-props.ya    
 70                                                   
 71 properties:                                       
 72   compatible:                                     
 73     items:                                        
 74       - enum:                                     
 75           - saef,sftc154b                         
 76           - sainsmart18                           
 77           - shineworld,lh133k                     
 78       - const: panel-mipi-dbi-spi                 
 79                                                   
 80   reg:                                            
 81     maxItems: 1                                   
 82                                                   
 83   write-only:                                     
 84     type: boolean                                 
 85     description:                                  
 86       Controller is not readable (ie. Din (MIS    
 87       wired up).                                  
 88                                                   
 89   dc-gpios:                                       
 90     maxItems: 1                                   
 91     description: |                                
 92       Controller data/command selection (D/CX)    
 93       If not set, the controller is in 3-line     
 94                                                   
 95   io-supply:                                      
 96     description: |                                
 97       Logic level supply for interface signals    
 98       No need to set if this is the same as po    
 99                                                   
100   spi-3wire: true                                 
101                                                   
102   format:                                         
103     description: >                                
104       Pixel format in bit order as going on th    
105         * `x2r1g1b1r1g1b1` - RGB111, 2 pixels     
106         * `x2b1g1r1b1g1r1` - BGR111, 2 pixels     
107         * `x1r1g1b1x1r1g1b1` - RGB111, 2 pixel    
108         * `x1b1g1r1x1b1g1r1` - BGR111, 2 pixel    
109         * `r5g6b5` - RGB565, 2 bytes              
110         * `b5g6r5` - BGR565, 2 bytes              
111         * `r6x2g6x2b6x2` - RGB666, 3 bytes        
112         * `b6x2g6x2r6x2` - BGR666, 3 bytes        
113     enum:                                         
114       - x2r1g1b1r1g1b1                            
115       - x2b1g1r1b1g1r1                            
116       - x1r1g1b1x1r1g1b1                          
117       - x1b1g1r1x1b1g1r1                          
118       - r5g6b5                                    
119       - b5g6r5                                    
120       - r6x2g6x2b6x2                              
121       - b6x2g6x2r6x2                              
122     default: r5g6b5                               
123                                                   
124 required:                                         
125   - compatible                                    
126   - reg                                           
127   - width-mm                                      
128   - height-mm                                     
129   - panel-timing                                  
130                                                   
131 unevaluatedProperties: false                      
132                                                   
133 examples:                                         
134   - |                                             
135     #include <dt-bindings/gpio/gpio.h>            
136                                                   
137     spi {                                         
138         #address-cells = <1>;                     
139         #size-cells = <0>;                        
140                                                   
141         display@0{                                
142             compatible = "sainsmart18", "panel    
143             reg = <0>;                            
144             spi-max-frequency = <40000000>;       
145                                                   
146             dc-gpios = <&gpio 24 GPIO_ACTIVE_H    
147             reset-gpios = <&gpio 25 GPIO_ACTIV    
148             write-only;                           
149                                                   
150             format = "r5g6b5";                    
151                                                   
152             backlight = <&backlight>;             
153                                                   
154             width-mm = <35>;                      
155             height-mm = <28>;                     
156                                                   
157             panel-timing {                        
158                 hactive = <160>;                  
159                 vactive = <128>;                  
160                 hback-porch = <0>;                
161                 vback-porch = <0>;                
162                 clock-frequency = <0>;            
163                 hfront-porch = <0>;               
164                 hsync-len = <0>;                  
165                 vfront-porch = <0>;               
166                 vsync-len = <0>;                  
167             };                                    
168         };                                        
169     };                                            
170                                                   
171 ...                                               
                                                      

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