arm64: dts: mba8mx: Add DSI-LVDS bridge nodes

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>
Signed-off-by: Shawn Guo <shawnguo@kernel.org>

diff --git a/arch/arm64/boot/dts/freescale/mba8mx.dtsi b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
index 8a9fe5cdcc98a0fc0e5720096c606c0f51eb8fc0..e2bc53b8d39a8914c0caa9cbad8bbee90a249056 100644 (file)
--- a/arch/arm64/boot/dts/freescale/mba8mx.dtsi
+++ b/arch/arm64/boot/dts/freescale/mba8mx.dtsi
@@ -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 = <&reg_12v>;
+               enable-gpios = <&expander2 2 GPIO_ACTIVE_HIGH>;
+               status = "disabled";
+       };
+
        beeper {
                compatible = "pwm-beeper";
                pwms = <&pwm4 0 250000 0>;
@@ -65,12 +75,45 @@
                };
        };
 
+       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 = <&reg_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 @@
                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 @@
        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 = <&reg_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 {