1. Article purpose[edit source]
The purpose of this article is to:
- List the display bridge hardware components that might be integrated in the different boards.
- Link these components to the corresponding software framework(s).
- Point to the appropriate component datasheets.
- Explain, when necessary, how to configure these components.
2. Software frameworks[edit source]
Domain | Peripheral | Software components | Comment | ||
---|---|---|---|---|---|
OP-TEE | Linux | STM32Cube | |||
Visual | Analog Devices adv7533 & adv7535 | DRM/KMS framework | MIPI® DSI to HDMI transmitter | ||
Visual | Silab sil9022 | DRM/KMS framework | Parallel RGB (DPI) to HDMI transmitter | ||
Visual | Toshiba tc358762 | DRM/KMS framework | MIPI® DSI to Parallel RGB (DPI) | ||
Visual | Analog Devices adv7513 | DRM/KMS framework | Parallel RGB (DPI) to HDMI transmitter |
3. Analog Devices adv7533 & adv7535[edit source]
The adv7533 and adv7535 (adv753x) DSI to HDMI transmitter support the HDMI® Specification on a wide range of mobile products.
For details and the datasheet please contact the adv753x HDMI transmitter provider.
The adv753x transmitter does not support DSI burst mode. Check the pixel clock constraints in non-burst mode.
[edit source]
![]() |
The adv7533 HDMI transmitter can be found on the adapter board B-LCDAD-HDMI1[1]. It is compatible with the STM32MP157 evaluation boards and can be plugged in place of the display. But note that:
|
[edit source]
![]() |
The adv7535 HDMI transmitter can be found on:
|
3.3. Linux driver[edit source]
Bindings: Documentation/devicetree/bindings/display/bridge/adi,adv7533.yaml (for both adv7533 & adv7535)
Sources: drivers/gpu/drm/bridge/adv7511/
Configuration:
- DRM_I2C_ADV7511
- DRM_I2C_ADV7511_AUDIO
- DRM_I2C_ADV7511_CEC
3.3.1. adv7533 device tree example[edit source]
Devicetree example with the B-LCDAD-HDMI1[1] board connected to the STM32MP157 evaluation board: arch/arm/boot/dts/stm32mp157c-ev1.dts
/ {
...
hdmi-out {
compatible = "hdmi-connector";
type = "a";
port {
hdmi_con: endpoint {
remote-endpoint = <&adv7533_out>;
};
};
};
};
&dsi {
#address-cells = <1>;
#size-cells = <0>;
status = "okay";
ports {
port@0 {
reg = <0>;
dsi_in: endpoint {
remote-endpoint = <<dc_ep1_out>;
};
};
port@1 {
reg = <1>;
dsi_out: endpoint {
remote-endpoint = <&adv7533_in>;
};
};
};
};
&i2c2 {
adv7533: hdmi@3d {
compatible = "adi,adv7533";
reg = <0x3d>, <0x3c>, <0x3f>, <0x38>;
reg-names = "main", "cec", "edid", "packet";
status = "okay";
adi,dsi-lanes = <2>;
reset-gpios = <&gpiof 15 GPIO_ACTIVE_LOW>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7533_in: endpoint {
remote-endpoint = <&dsi_out>;
};
};
port@1 {
reg=<1>;
adv7533_out: endpoint {
remote-endpoint = <&hdmi_con>;
};
};
};
};
};
/* We disable the ov5640 node because it uses the same I2C address than HDMI-CEC */
&ov5640 {
status = "disabled";
};
3.3.2. adv7535 device tree example[edit source]
Devicetree example based on STM32MP25 Discovery kit: arch/arm64/boot/dts/st/stm32mp257f-dk.dts
/ {
...
hdmi: connector {
compatible = "hdmi-connector";
label = "hdmi";
type = "a";
hdmi-pwr-supply = <&scmi_v5v_hdmi>;
port {
hdmi_connector_in: endpoint {
remote-endpoint = <&adv7535_out>;
};
};
};
...
};
...
&dsi {
vdd-supply = <&scmi_vddcore>;
vdda18-supply = <&scmi_v1v8>;
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
dsi_in: endpoint {
remote-endpoint = <<dc_ep0_out>;
};
};
port@1 {
reg = <1>;
dsi_out1: endpoint {
remote-endpoint = <&adv7535_in>;
};
};
};
};
...
&i2c2 {
...
adv7535: hdmi@3d {
compatible = "adi,adv7535";
reg = <0x3d>, <0x3c>, <0x3f>, <0x38>;
reg-names = "main", "cec", "edid", "packet";
status = "okay";
adi,dsi-lanes = <4>;
clocks = <&clk_ext_cec>;
clock-names = "cec";
interrupt-parent = <&gpiob>;
interrupts = <4 IRQ_TYPE_EDGE_FALLING>;
reset-gpios = <&gpiob 6 GPIO_ACTIVE_LOW>;
avdd-supply = <&scmi_v1v8>;
dvdd-supply = <&scmi_v1v8>;
pvdd-supply = <&scmi_v1v8>;
a2vdd-supply = <&scmi_v1v8>;
v3p3-supply = <&scmi_v3v3>;
v1p2-supply = <&scmi_v1v8>;
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7535_in: endpoint {
remote-endpoint = <&dsi_out1>;
};
};
port@1 {
reg = <1>;
adv7535_out: endpoint {
remote-endpoint = <&hdmi_connector_in>;
};
};
port@2 {
reg = <2>;
adv7535_tx_endpoint: endpoint {
remote-endpoint = <&i2s2_endpoint>;
};
};
};
};
...
};
...
<dc {
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
ltdc_ep0_out: endpoint@0 {
reg = <0>;
remote-endpoint = <&dsi_in>;
};
ltdc_ep1_out: endpoint@1 {
reg = <1>;
remote-endpoint = <&lvds_in>;
};
};
};
4. Silab sil9022[edit source]
The SiI9022A HDMI transmitter supports the HDMI® Specification on a wide range of mobile products.
For details and the datasheet please contact the SiI9022A HDMI transmitter provider.
![]() |
This HDMI transmitter can be found on some STM32MP1 Discovery kits. |
4.1. Linux driver[edit source]
Bindings: Documentation/devicetree/bindings/display/bridge/sil,sii9022.yaml
Sources: drivers/gpu/drm/bridge/sii902x.c
Configuration: DRM_SII902X
Devicetree example: arch/arm/boot/dts/stm32mp15xx-dkx.dtsi
&i2c1 {
pinctrl-names = "default", "sleep";
pinctrl-0 = <&i2c1_pins_a>;
pinctrl-1 = <&i2c1_sleep_pins_a>;
i2c-scl-rising-time-ns = <100>;
i2c-scl-falling-time-ns = <7>;
status = "okay";
/delete-property/dmas;
/delete-property/dma-names;
hdmi-transmitter@39 {
compatible = "sil,sii9022";
reg = <0x39>;
iovcc-supply = <&v3v3_hdmi>;
cvcc12-supply = <&v1v2_hdmi>;
reset-gpios = <&gpioa 10 GPIO_ACTIVE_LOW>;
interrupts = <1 IRQ_TYPE_EDGE_FALLING>;
interrupt-parent = <&gpiog>;
#sound-dai-cells = <0>;
status = "okay";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
sii9022_in: endpoint {
remote-endpoint = <<dc_ep0_out>;
};
};
port@3 {
reg = <3>;
sii9022_tx_endpoint: endpoint {
remote-endpoint = <&i2s2_endpoint>;
};
};
};
};
...
};
<dc {
pinctrl-names = "default", "sleep";
pinctrl-0 = <<dc_pins_a>;
pinctrl-1 = <<dc_sleep_pins_a>;
status = "okay";
port {
ltdc_ep0_out: endpoint@0 {
reg = <0>;
remote-endpoint = <&sii9022_in>;
};
};
};
Devicetree pin control bindings example: arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
&pinctrl {
...
ltdc_pins_a: ltdc-0 {
pins {
pinmux = <STM32_PINMUX('G', 7, AF14)>, /* LCD_CLK */
<STM32_PINMUX('I', 10, AF14)>, /* LCD_HSYNC */
<STM32_PINMUX('I', 9, AF14)>, /* LCD_VSYNC */
<STM32_PINMUX('F', 10, AF14)>, /* LCD_DE */
<STM32_PINMUX('H', 2, AF14)>, /* LCD_R0 */
<STM32_PINMUX('H', 3, AF14)>, /* LCD_R1 */
<STM32_PINMUX('H', 8, AF14)>, /* LCD_R2 */
<STM32_PINMUX('H', 9, AF14)>, /* LCD_R3 */
<STM32_PINMUX('H', 10, AF14)>, /* LCD_R4 */
<STM32_PINMUX('C', 0, AF14)>, /* LCD_R5 */
<STM32_PINMUX('H', 12, AF14)>, /* LCD_R6 */
<STM32_PINMUX('E', 15, AF14)>, /* LCD_R7 */
<STM32_PINMUX('E', 5, AF14)>, /* LCD_G0 */
<STM32_PINMUX('E', 6, AF14)>, /* LCD_G1 */
<STM32_PINMUX('H', 13, AF14)>, /* LCD_G2 */
<STM32_PINMUX('H', 14, AF14)>, /* LCD_G3 */
<STM32_PINMUX('H', 15, AF14)>, /* LCD_G4 */
<STM32_PINMUX('I', 0, AF14)>, /* LCD_G5 */
<STM32_PINMUX('I', 1, AF14)>, /* LCD_G6 */
<STM32_PINMUX('I', 2, AF14)>, /* LCD_G7 */
<STM32_PINMUX('D', 9, AF14)>, /* LCD_B0 */
<STM32_PINMUX('G', 12, AF14)>, /* LCD_B1 */
<STM32_PINMUX('G', 10, AF14)>, /* LCD_B2 */
<STM32_PINMUX('D', 10, AF14)>, /* LCD_B3 */
<STM32_PINMUX('I', 4, AF14)>, /* LCD_B4 */
<STM32_PINMUX('A', 3, AF14)>, /* LCD_B5 */
<STM32_PINMUX('B', 8, AF14)>, /* LCD_B6 */
<STM32_PINMUX('D', 8, AF14)>; /* LCD_B7 */
bias-disable;
drive-push-pull;
slew-rate = <1>;
};
};
ltdc_sleep_pins_a: ltdc-sleep-0 {
pins {
pinmux = <STM32_PINMUX('G', 7, ANALOG)>, /* LCD_CLK */
<STM32_PINMUX('I', 10, ANALOG)>, /* LCD_HSYNC */
<STM32_PINMUX('I', 9, ANALOG)>, /* LCD_VSYNC */
<STM32_PINMUX('F', 10, ANALOG)>, /* LCD_DE */
<STM32_PINMUX('H', 2, ANALOG)>, /* LCD_R0 */
<STM32_PINMUX('H', 3, ANALOG)>, /* LCD_R1 */
<STM32_PINMUX('H', 8, ANALOG)>, /* LCD_R2 */
<STM32_PINMUX('H', 9, ANALOG)>, /* LCD_R3 */
<STM32_PINMUX('H', 10, ANALOG)>, /* LCD_R4 */
<STM32_PINMUX('C', 0, ANALOG)>, /* LCD_R5 */
<STM32_PINMUX('H', 12, ANALOG)>, /* LCD_R6 */
<STM32_PINMUX('E', 15, ANALOG)>, /* LCD_R7 */
<STM32_PINMUX('E', 5, ANALOG)>, /* LCD_G0 */
<STM32_PINMUX('E', 6, ANALOG)>, /* LCD_G1 */
<STM32_PINMUX('H', 13, ANALOG)>, /* LCD_G2 */
<STM32_PINMUX('H', 14, ANALOG)>, /* LCD_G3 */
<STM32_PINMUX('H', 15, ANALOG)>, /* LCD_G4 */
<STM32_PINMUX('I', 0, ANALOG)>, /* LCD_G5 */
<STM32_PINMUX('I', 1, ANALOG)>, /* LCD_G6 */
<STM32_PINMUX('I', 2, ANALOG)>, /* LCD_G7 */
<STM32_PINMUX('D', 9, ANALOG)>, /* LCD_B0 */
<STM32_PINMUX('G', 12, ANALOG)>, /* LCD_B1 */
<STM32_PINMUX('G', 10, ANALOG)>, /* LCD_B2 */
<STM32_PINMUX('D', 10, ANALOG)>, /* LCD_B3 */
<STM32_PINMUX('I', 4, ANALOG)>, /* LCD_B4 */
<STM32_PINMUX('A', 3, ANALOG)>, /* LCD_B5 */
<STM32_PINMUX('B', 8, ANALOG)>, /* LCD_B6 */
<STM32_PINMUX('D', 8, ANALOG)>; /* LCD_B7 */
};
};
...
};
5. Toshiba tc358762[edit source]
The tc358762 is a DSI de-serializer to parallel DPI or DBI. Only DPI output is supported in current Linux driver.
For details and the datasheet please contact the tc358762 device provider.
5.1. Linux driver[edit source]
Bindings: Documentation/devicetree/bindings/display/bridge/toshiba,tc358762.yaml
Sources: drivers/gpu/drm/bridge/tc358762.c
Configuration:
- DRM_TOSHIBA_TC358762
Devicetree example: check the complete example for the Raspberry Pi 7" Touch Display.
6. Analog Devices adv7513[edit source]
The Analog Devices adv7513 Parallel RGB (DPI) to HDMI transmitter supports the HDMI® Specification on a wide range of mobile products.
For details and the datasheet please contact the adv7513 HDMI transmitter provider.
![]() |
This HDMI transmitter can be found on some dh-electronics AVENGER 96Boards compliant consumer edition boards. |
6.1. Linux driver[edit source]
Bindings: Documentation/devicetree/bindings/display/bridge/adi,adv7511.yaml
Sources: drivers/gpu/drm/bridge/adv7511
Configuration:
- DRM_I2C_ADV7511
- DRM_I2C_ADV7511_AUDIO
- DRM_I2C_ADV7511_CEC
Devicetree example: arch/arm/boot/dts/stm32mp15xx-dhcor-avenger96.dtsi
/ {
hdmi-out {
compatible = "hdmi-connector";
type = "a";
port {
hdmi_con: endpoint {
remote-endpoint = <&adv7513_out>;
};
};
};
...
sound {
compatible = "audio-graph-card";
label = "STM32MP1-AV96-HDMI";
dais = <&sai2a_port>;
status = "okay";
};
...
};
&i2c4 {
hdmi-transmitter@3d {
compatible = "adi,adv7513";
reg = <0x3d>, <0x4d>, <0x2d>, <0x5d>;
reg-names = "main", "edid", "cec", "packet";
clocks = <&cec_clock>;
clock-names = "cec";
avdd-supply = <&v3v3>;
dvdd-supply = <&v3v3>;
pvdd-supply = <&v3v3>;
dvdd-3v-supply = <&v3v3>;
bgvdd-supply = <&v3v3>;
interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
interrupt-parent = <&gpiog>;
status = "okay";
adi,input-depth = <8>;
adi,input-colorspace = "rgb";
adi,input-clock = "1x";
ports {
#address-cells = <1>;
#size-cells = <0>;
port@0 {
reg = <0>;
adv7513_in: endpoint {
remote-endpoint = <<dc_ep0_out>;
};
};
port@1 {
reg = <1>;
adv7513_out: endpoint {
remote-endpoint = <&hdmi_con>;
};
};
port@2 {
reg = <2>;
adv7513_i2s0: endpoint {
remote-endpoint = <&sai2a_endpoint>;
};
};
};
};
};
<dc {
pinctrl-names = "default", "sleep";
pinctrl-0 = <<dc_pins_d>;
pinctrl-1 = <<dc_sleep_pins_d>;
status = "okay";
port {
#address-cells = <1>;
#size-cells = <0>;
ltdc_ep0_out: endpoint@0 {
reg = <0>;
remote-endpoint = <&adv7513_in>;
};
};
};
Devicetree pin control bindings example: arch/arm/boot/dts/stm32mp15-pinctrl.dtsi
&pinctrl {
...
ltdc_pins_d: ltdc-3 {
pins1 {
pinmux = <STM32_PINMUX('G', 7, AF14)>; /* LCD_CLK */
bias-disable;
drive-push-pull;
slew-rate = <3>;
};
pins2 {
pinmux = <STM32_PINMUX('I', 10, AF14)>, /* LCD_HSYNC */
<STM32_PINMUX('I', 9, AF14)>, /* LCD_VSYNC */
<STM32_PINMUX('E', 13, AF14)>, /* LCD_DE */
<STM32_PINMUX('G', 13, AF14)>, /* LCD_R0 */
<STM32_PINMUX('H', 3, AF14)>, /* LCD_R1 */
<STM32_PINMUX('H', 8, AF14)>, /* LCD_R2 */
<STM32_PINMUX('H', 9, AF14)>, /* LCD_R3 */
<STM32_PINMUX('A', 5, AF14)>, /* LCD_R4 */
<STM32_PINMUX('H', 11, AF14)>, /* LCD_R5 */
<STM32_PINMUX('H', 12, AF14)>, /* LCD_R6 */
<STM32_PINMUX('E', 15, AF14)>, /* LCD_R7 */
<STM32_PINMUX('E', 5, AF14)>, /* LCD_G0 */
<STM32_PINMUX('B', 0, AF14)>, /* LCD_G1 */
<STM32_PINMUX('H', 13, AF14)>, /* LCD_G2 */
<STM32_PINMUX('E', 11, AF14)>, /* LCD_G3 */
<STM32_PINMUX('H', 15, AF14)>, /* LCD_G4 */
<STM32_PINMUX('H', 4, AF9)>, /* LCD_G5 */
<STM32_PINMUX('I', 11, AF9)>, /* LCD_G6 */
<STM32_PINMUX('G', 8, AF14)>, /* LCD_G7 */
<STM32_PINMUX('D', 9, AF14)>, /* LCD_B0 */
<STM32_PINMUX('G', 12, AF14)>, /* LCD_B1 */
<STM32_PINMUX('G', 10, AF14)>, /* LCD_B2 */
<STM32_PINMUX('D', 10, AF14)>, /* LCD_B3 */
<STM32_PINMUX('E', 12, AF14)>, /* LCD_B4 */
<STM32_PINMUX('A', 3, AF14)>, /* LCD_B5 */
<STM32_PINMUX('B', 8, AF14)>, /* LCD_B6 */
<STM32_PINMUX('I', 7, AF14)>; /* LCD_B7 */
bias-disable;
drive-push-pull;
slew-rate = <2>;
};
};
ltdc_sleep_pins_d: ltdc-sleep-3 {
pins {
pinmux = <STM32_PINMUX('G', 7, ANALOG)>, /* LCD_CLK */
<STM32_PINMUX('I', 10, ANALOG)>, /* LCD_HSYNC */
<STM32_PINMUX('I', 9, ANALOG)>, /* LCD_VSYNC */
<STM32_PINMUX('E', 13, ANALOG)>, /* LCD_DE */
<STM32_PINMUX('G', 13, ANALOG)>, /* LCD_R0 */
<STM32_PINMUX('H', 3, ANALOG)>, /* LCD_R1 */
<STM32_PINMUX('H', 8, ANALOG)>, /* LCD_R2 */
<STM32_PINMUX('H', 9, ANALOG)>, /* LCD_R3 */
<STM32_PINMUX('A', 5, ANALOG)>, /* LCD_R4 */
<STM32_PINMUX('H', 11, ANALOG)>, /* LCD_R5 */
<STM32_PINMUX('H', 12, ANALOG)>, /* LCD_R6 */
<STM32_PINMUX('E', 15, ANALOG)>, /* LCD_R7 */
<STM32_PINMUX('E', 5, ANALOG)>, /* LCD_G0 */
<STM32_PINMUX('B', 0, ANALOG)>, /* LCD_G1 */
<STM32_PINMUX('H', 13, ANALOG)>, /* LCD_G2 */
<STM32_PINMUX('E', 11, ANALOG)>, /* LCD_G3 */
<STM32_PINMUX('H', 15, ANALOG)>, /* LCD_G4 */
<STM32_PINMUX('H', 4, ANALOG)>, /* LCD_G5 */
<STM32_PINMUX('I', 11, ANALOG)>, /* LCD_G6 */
<STM32_PINMUX('G', 8, ANALOG)>, /* LCD_G7 */
<STM32_PINMUX('D', 9, ANALOG)>, /* LCD_B0 */
<STM32_PINMUX('G', 12, ANALOG)>, /* LCD_B1 */
<STM32_PINMUX('G', 10, ANALOG)>, /* LCD_B2 */
<STM32_PINMUX('D', 10, ANALOG)>, /* LCD_B3 */
<STM32_PINMUX('E', 12, ANALOG)>, /* LCD_B4 */
<STM32_PINMUX('A', 3, ANALOG)>, /* LCD_B5 */
<STM32_PINMUX('B', 8, ANALOG)>, /* LCD_B6 */
<STM32_PINMUX('I', 7, ANALOG)>; /* LCD_B7 */
};
};
...
};
7. References[edit source]