[PATCH v2 7/7] arm64: dts: ti: k3-am68-sk: Enable DSI on DisplayPort-0
Jayesh Choudhary
j-choudhary at ti.com
Tue Jul 15 02:48:44 PDT 2025
Hi,
On 26/06/25 12:04, Vignesh Raghavendra wrote:
>
>
> On 24/06/25 13:56, Jayesh Choudhary wrote:
>> Enable DSI support for AM68-SK platform.
>>
>> Add DT node for DSI2eDP bridge. The DSI to eDP bridge is sn65dsi86
>> on the board.
>>
>> Add the endpoint nodes to describe connection from:
>> DSS => DSI => SN65DSI86 bridge => DisplayPort-0
>>
>> Set status for all required nodes for DisplayPort-0 as 'okay'.
>>
>> Signed-off-by: Jayesh Choudhary <j-choudhary at ti.com>
>> ---
>> .../boot/dts/ti/k3-am68-sk-base-board.dts | 96 +++++++++++++++++++
>> 1 file changed, 96 insertions(+)
>>
>> diff --git a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> index 5fa70a874d7b..aef63ae2994c 100644
>> --- a/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> +++ b/arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
>> @@ -135,6 +135,35 @@ transceiver4: can-phy3 {
>> max-bitrate = <5000000>;
>> };
>>
>> + edp0_refclk: clock-edp0-refclk {
>> + #clock-cells = <0>;
>> + compatible = "fixed-clock";
>> + clock-frequency = <19200000>;
>> + };
>> +
>> + dp0_pwr_3v3: fixedregulator-dp0-pwr {
>
> use std node name: regulator-...
Okay! In v3, I will change this.
>
>> + compatible = "regulator-fixed";
>> + regulator-name = "dp0-pwr";
>> + regulator-min-microvolt = <3300000>;
>> + regulator-max-microvolt = <3300000>;
>> + gpio = <&exp2 2 GPIO_ACTIVE_HIGH>; /*P0 - DP0_3V3 _EN */
>> + enable-active-high;
>> + regulator-always-on;
>> + };
>> +
>> + dp0: dp0-connector {
>> + compatible = "dp-connector";
>> + label = "DP0";
>> + type = "full-size";
>> + dp-pwr-supply = <&dp0_pwr_3v3>;
>> +
>> + port {
>> + dp0_connector_in: endpoint {
>> + remote-endpoint = <&dp0_out>;
>> + };
>> + };
>> + };
>> +
>> connector-hdmi {
>> compatible = "hdmi-connector";
>> label = "hdmi";
>> @@ -605,6 +634,39 @@ exp2: gpio at 20 {
>> gpio-line-names = "HDMI_PDn","HDMI_LS_OE",
>> "DP0_3V3_EN","eDP_ENABLE";
>> };
>> +
>> + dsi_edp_bridge: dsi-edp-bridge at 2c {
>> + compatible = "ti,sn65dsi86";
>> + reg = <0x2c>;
>> + clock-names = "refclk";
>> + clocks = <&edp0_refclk>;
>> + enable-gpios = <&exp2 3 GPIO_ACTIVE_HIGH>;
>> + vpll-supply = <&vsys_io_1v8>;
>> + vccio-supply = <&vsys_io_1v8>;
>> + vcca-supply = <&vsys_io_1v2>;
>> + vcc-supply = <&vsys_io_1v2>;
>> +
>> + dsi_edp_bridge_ports: ports {
>> + #address-cells = <1>;
>> + #size-cells = <0>;
>> +
>> + port at 0 {
>> + reg = <0>;
>> +
>> + dp0_in: endpoint {
>> + remote-endpoint = <&dsi0_out>;
>> + };
>> + };
>> +
>> + port at 1 {
>> + reg = <1>;
>> +
>> + dp0_out: endpoint {
>> + remote-endpoint = <&dp0_connector_in>;
>> + };
>> + };
>> + };
>> + };
>> };
>>
>> &main_sdhci1 {
>> @@ -699,6 +761,15 @@ dpi_out0: endpoint {
>> remote-endpoint = <&tfp410_in>;
>> };
>> };
>> +
>> + /* DSI */
>> + port at 2 {
>> + reg = <2>;
>> +
>> + dpi0_out: endpoint {
>> + remote-endpoint = <&dsi0_in>;
>> + };
>> + };
>> };
>>
>> &serdes_ln_ctrl {
>> @@ -756,3 +827,28 @@ &usb0 {
>> phys = <&serdes0_usb_link>;
>> phy-names = "cdns3,usb3-phy";
>> };
>> +
>> +&dphy_tx0 {
>> + status = "okay";
>> +};
>> +
>> +&dsi0 {
>> + status = "okay";
>> +};
>> +
>> +&dsi0_ports {
>> +
>> + port at 0 {
>> + reg = <0>;
>> + dsi0_out: endpoint {
>> + remote-endpoint = <&dp0_in>;
>> + };
>> + };
>> +
>> + port at 1 {
>> + reg = <1>;
>> + dsi0_in: endpoint {
>> + remote-endpoint = <&dpi0_out>;
>> + };
>> + };
>> +};
>
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