@@ -8,6 +8,16 @@
/* TQ-Systems GmbH MBa8Mx baseboard */
/ {
+ backlight_lvds: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm3 0 5000000 0>;
+ brightness-levels = <0 4 8 16 32 64 128 255>;
+ default-brightness-level = <7>;
+ power-supply = <®_12v>;
+ enable-gpios = <&expander2 2 GPIO_ACTIVE_HIGH>;
+ status = "disabled";
+ };
+
beeper {
compatible = "pwm-beeper";
pwms = <&pwm4 0 250000 0>;
@@ -65,12 +75,45 @@ led2: led2 {
};
};
+ gpio_delays: gpio-delays {
+ compatible = "gpio-delay";
+ #gpio-cells = <3>;
+ gpio-controller;
+ gpios = <&expander0 6 GPIO_ACTIVE_HIGH>;
+ gpio-line-names = "LVDS_BRIDGE_EN_1V8";
+ };
+
+ panel: panel-lvds {
+ /*
+ * Display is not fixed, so compatible has to be added from
+ * DT overlay
+ */
+ backlight = <&backlight_lvds>;
+ power-supply = <®_vcc_3v3>;
+ status = "disabled";
+
+ port {
+ panel_in_lvds: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&lvds_bridge_out>;
+ };
+ };
+ };
+
pcie0_refclk: pcie0-refclk {
compatible = "fixed-clock";
#clock-cells = <0>;
clock-frequency = <100000000>;
};
+ reg_12v: regulator-12v {
+ compatible = "regulator-fixed";
+ regulator-name = "MBA8MX_12V";
+ regulator-min-microvolt = <12000000>;
+ regulator-max-microvolt = <12000000>;
+ regulator-always-on;
+ };
+
reg_hub_vbus: regulator-hub-vbus {
compatible = "regulator-fixed";
regulator-name = "MBA8MX_HUB_VBUS";
@@ -157,6 +200,10 @@ expander0: gpio@23 {
interrupts = <9 IRQ_TYPE_EDGE_FALLING>;
interrupt-controller;
#interrupt-cells = <2>;
+ gpio-line-names = "", "", "", "",
+ "", "", "LVDS_BRIDGE_EN", "",
+ "", "", "", "",
+ "", "", "", "";
sd-mux-oe-hog {
gpio-hog;
@@ -227,6 +274,52 @@ &i2c3 {
scl-gpios = <&gpio5 18 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
sda-gpios = <&gpio5 19 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
status = "okay";
+
+ dsi_lvds_bridge: bridge@2d {
+ compatible = "ti,sn65dsi84";
+ reg = <0x2d>;
+ enable-gpios = <&gpio_delays 0 130000 0>;
+ vcc-supply = <®_sn65dsi83_1v8>;
+ status = "disabled";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ lvds_bridge_in: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&mipi_dsi_out>;
+ };
+ };
+
+ port@2 {
+ reg = <2>;
+
+ lvds_bridge_out: endpoint {
+ remote-endpoint = <&panel_in_lvds>;
+ };
+ };
+ };
+ };
+};
+
+&mipi_dsi {
+ samsung,burst-clock-frequency = <891000000>;
+ samsung,esc-clock-frequency = <20000000>;
+
+ ports {
+ port@1 {
+ reg = <1>;
+
+ mipi_dsi_out: endpoint {
+ data-lanes = <1 2 3 4>;
+ remote-endpoint = <&lvds_bridge_in>;
+ };
+ };
+ };
};
&pwm3 {
This adds the DSI-LVDS bridge including the regulator, backlight and an unspecified panel. It is expected to set the compatible when the display chain is enabled. Signed-off-by: Alexander Stein <alexander.stein@ew.tq-group.com> --- arch/arm64/boot/dts/freescale/mba8mx.dtsi | 93 +++++++++++++++++++++++ 1 file changed, 93 insertions(+)