205 lines
8.0 KiB
Plaintext
205 lines
8.0 KiB
Plaintext
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Qualcomm Technologies, Inc. mdss-spi-panel
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mdss-spi-panel is a spi panel device which supports panels that
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are compatible with display serial interface specification.
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Required properties:
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- qcom,mdss-spi-panel-controller: Specifies the phandle for the SPI controller that
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this panel will be mapped to.
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- qcom,mdss-spi-panel-width: Specifies panel width in pixels.
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- qcom,mdss-spi-panel-height: Specifies panel height in pixels.
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- qcom,mdss-spi-bpp: Specifies the panel bits per pixels.
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3 = for rgb111
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8 = for rgb332
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12 = for rgb444
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16 = for rgb565
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18 = for rgb666
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24 = for rgb888
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- qcom,mdss-spi-panel-destination: A string that specifies the destination display for the panel.
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"display_1" = DISPLAY_1
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"display_2" = DISPLAY_2
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- qcom,mdss-spi-on-command: A byte stream formed by multiple packets
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byte 0: wait number of specified ms after command
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transmitted
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byte 1: 8 bits length in network byte order
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byte 3 and beyond: number byte of payload
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- qcom,mdss-spi-off-command: A byte stream formed by multiple packets
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byte 0: wait number of specified ms after command
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transmitted
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byte 1: 8 bits length in network byte order
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byte 3 and beyond: number byte of payload
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Optional properties:
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- qcom,mdss-spi-panel-name: A string used as a descriptive name of the panel
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- qcom,cont-splash-enabled: Boolean used to enable continuous splash mode.
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If this property is specified, it is required to
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to specify the memory reserved for the splash
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screen using the qcom,memblock-reserve binding
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for the framebuffer device attached to the panel.
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- qcom,mdss-spi-h-back-porch: Horizontal back porch value in pixels.
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6 = default value.
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- qcom,mdss-spi-h-front-porch: Horizontal front porch value in pixels.
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6 = default value.
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- qcom,mdss-spi-h-pulse-width: Horizontal pulse width.
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2 = default value.
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- qcom,mdss-spi-h-sync-skew: Horizontal sync skew value.
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0 = default value.
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- qcom,mdss-spi-v-back-porch: Vertical back porch value in pixels.
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6 = default value.
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- qcom,mdss-spi-v-front-porch: Vertical front porch value in pixels.
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6 = default value.
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- qcom,mdss-spi-v-pulse-width: Vertical pulse width.
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2 = default value.
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- qcom,mdss-spi-bl-pmic-control-type: A string that specifies the implementation of backlight
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control for this panel.
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"bl_ctrl_pwm" = Backlight controlled by PWM gpio.
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"bl_ctrl_wled" = Backlight controlled by WLED.
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other: Unknown backlight control. (default)
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- qcom,mdss-spi-bl-min-level: Specifies the min backlight level supported by the panel.
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0 = default value.
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- qcom,mdss-spi-bl-max-level: Specifies the max backlight level supported by the panel.
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255 = default value.
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- qcom,mdss-spi-panel-framerate: Specifies the frame rate for the panel.
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- qcom,mdss-spi-panel-vsync-per-te: Specifies the number of how many TE will trigger a VSYNC.
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- qcom,esd-check-enabled: Boolean used to enable ESD recovery feature.
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- qcom,mdss-spi-panel-status-check-mode:Specifies the panel status check method for ESD recovery.
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"send_init_command" = Regardless of panel status, direct send the panel
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initial code to recover panel status
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"reg_read" = Reads panel status register to check the panel status
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- qcom,mdss-spi-panel-status-reg: Unsigned 8bits integer value that specifies the value of panel status register address.
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- qcom,mdss-spi-panel-status-read-length:
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Unsigned 8bits integer value that specifies the expected read-back length of the
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panel register.
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- qcom,mdss-spi-panel-status-value: An unsigned 8bits integer araray that specifies the values of the panel status register
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which is used to check the panel status. The size of this array
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is specified by qcom,mdss-dsi-panel-status-read-length.
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Example:
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&mdss_spi_display {
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spi_gc9305_qvga_cmd: qcom,mdss_spi_gc9305_qvga_cmd {
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qcom,mdss-spi-panel-name = "gc9305 qvga command mode spi panel";
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qcom,mdss-spi-panel-destination = "display_1";
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qcom,mdss-spi-panel-controller = <&mdss_spi>;
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qcom,mdss-spi-panel-framerate = <30>;
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qcom,mdss-spi-panel-width = <240>;
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qcom,mdss-spi-panel-height = <320>;
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qcom,mdss-spi-h-front-porch = <79>;
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qcom,mdss-spi-h-back-porch = <59>;
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qcom,mdss-spi-h-pulse-width = <60>;
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qcom,mdss-spi-v-back-porch = <10>;
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qcom,mdss-spi-v-front-porch = <7>;
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qcom,mdss-spi-v-pulse-width = <2>;
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qcom,mdss-spi-h-left-border = <0>;
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qcom,mdss-spi-h-right-border = <0>;
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qcom,mdss-spi-v-top-border = <0>;
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qcom,mdss-spi-v-bottom-border = <0>;
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qcom,mdss-spi-bpp = <16>;
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qcom,mdss-spi-on-command = [00 01 FE
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00 01 EF
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00 02 36 48
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00 02 3A 05
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00 02 35 00
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00 03 A4 44 44
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00 03 A5 42 42
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00 03 AA 88 88
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00 03 E8 12 40
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00 03 E3 01 10
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00 02 FF 61
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00 02 AC 00
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00 03 A6 2A 2A
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00 03 A7 2B 2B
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00 03 A8 18 18
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00 03 A9 2A 2A
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00 02 AD 33
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00 02 AF 55
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00 02 AE 2B
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00 05 2A 00 00 00 EF
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00 05 2B 00 00 01 3F
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00 01 2C
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00 07 F0 02 02 00 08 0C 10
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00 07 F1 01 00 00 14 1D 0E
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00 07 F2 10 09 37 04 04 48
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00 07 F3 10 0B 3F 05 05 4E
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00 07 F4 0D 19 17 1D 1E 0F
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00 07 F5 06 12 13 1A 1B 0F
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78 01 11
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00 01 29
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00 01 2C];
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qcom,mdss-spi-off-command = [20 01 28
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20 01 10];
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qcom,mdss-spi-bl-min-level = <1>;
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qcom,mdss-spi-bl-max-level = <4095>;
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qcom,esd-check-enabled;
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qcom,mdss-spi-panel-status-check-mode = "reg_read";
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qcom,mdss-spi-panel-status-reg = /bits/ 8 <0x09>;
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qcom,mdss-spi-panel-status-read-length = <4>;
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qcom,mdss-spi-panel-status-value = /bits/ 8 <0x52 0x29 0x83 0x00>;
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};
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};
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mdss-spi-panel is a SPI interface panel which uses SPI protocol for data
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receive and send.
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Required properties:
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- compatible: Must be "qcom,mdss-spi-panel"
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- vdd-supply: Phandle for vdd regulator device node.
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- vddio-supply: Phandle for vdd-io regulator device node.
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- qcom,panel-supply-entries: A node that lists the elements of the supply used to
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power the DSI panel. There can be more than one instance
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of this binding, in which case the entry would be appended
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with the supply entry index. For a detailed description of
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fields in the supply entry, refer to the qcom,ctrl-supply-entries
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binding above.
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Optional properties:
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- pwms:
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Value type: <prop-encoded-array>
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Definition: The PWM device (phandle) used for controlling backlight.
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- qcom,platform-spi-dc-gpio: Pull down this gpio indicate current package is command,
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Pull up this gpio indicate current package is parameter or pixels.
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- qcom,platform-reset-gpio: Specifies the panel reset gpio.
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- qcom,platform-te-gpio: Specifies the gpio used for TE.
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- label: A string used to describe the controller used.
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-- qcom,supply-name: name of the supply (vdd/vdda/vddio)
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-- qcom,supply-min-voltage: minimum voltage level (uV)
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-- qcom,supply-max-voltage: maximum voltage level (uV)
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-- qcom,supply-enable-load: load drawn (uA) from enabled supply
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-- qcom,supply-disable-load: load drawn (uA) from disabled supply
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-- qcom,supply-pre-on-sleep: time to sleep (ms) before turning on
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-- qcom,supply-post-on-sleep: time to sleep (ms) after turning on
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-- qcom,supply-pre-off-sleep: time to sleep (ms) before turning off
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-- qcom,supply-post-off-sleep: time to sleep (ms) after turning off
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Example:
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mdss_spi_panel: qcom,mdss_spi_panel {
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compatible = "qcom,mdss-spi-panel";
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label = "mdss spi panel";
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vdd-supply = <&pms405_l1>;
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vddio-supply = <&pms405_l6>;
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qcom,platform-te-gpio = <&tlmm 57 0>;
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qcom,platform-reset-gpio = <&tlmm 42 0>;
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qcom,platform-spi-dc-gpio = <&tlmm 39 0>;
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pwms = <&pms405_l1 0 1000000>;
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qcom,panel-supply-entries {
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#address-cells = <1>;
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#size-cells = <0>;
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qcom,panel-supply-entry@0 {
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reg = <0>;
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qcom,supply-name = "vdd";
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qcom,supply-min-voltage = <2850000>;
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qcom,supply-max-voltage = <2850000>;
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qcom,supply-enable-load = <100000>;
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qcom,supply-disable-load = <100>;
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};
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qcom,panel-supply-entry@1 {
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reg = <1>;
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qcom,supply-name = "vddio";
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qcom,supply-min-voltage = <1800000>;
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qcom,supply-max-voltage = <1800000>;
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qcom,supply-enable-load = <100000>;
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qcom,supply-disable-load = <100>;
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};
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};
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};
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