[RESEND PATCH v2 3/6] ARM: dts: stm32: support display on stm32f746-disco board

[Dario Binacchi]

Add support to Rocktech RK043FN48H display on stm32f746-disco board.

Signed-off-by: Dario Binacchi <dario.binac...@amarulasolutions.com>
---

(no changes since v1)

 arch/arm/boot/dts/stm32f746-disco.dts | 51 +++++++++++++++++++++++++++
 1 file changed, 51 insertions(+)

diff --git a/arch/arm/boot/dts/stm32f746-disco.dts 
b/arch/arm/boot/dts/stm32f746-disco.dts
index c11616ed5fc6..cda423b6a874 100644
--- a/arch/arm/boot/dts/stm32f746-disco.dts
+++ b/arch/arm/boot/dts/stm32f746-disco.dts
@@ -60,10 +60,41 @@ memory@c0000000 {
                reg = <0xC0000000 0x800000>;
        };
 
+       reserved-memory {
+               #address-cells = <1>;
+               #size-cells = <1>;
+               ranges;
+
+               linux,cma {
+                       compatible = "shared-dma-pool";
+                       no-map;
+                       size = <0x80000>;
+                       linux,dma-default;
+               };
+       };
+
        aliases {
                serial0 = &usart1;
        };
 
+       backlight: backlight {
+               compatible = "gpio-backlight";
+               gpios = <&gpiok 3 GPIO_ACTIVE_HIGH>;
+               status = "okay";
+       };
+
+       panel_rgb: panel-rgb {
+               compatible = "rocktech,rk043fn48h";
+               backlight = <&backlight>;
+               enable-gpios = <&gpioi 12 GPIO_ACTIVE_HIGH>;
+               status = "okay";
+               port {
+                       panel_in_rgb: endpoint {
+                               remote-endpoint = <&ltdc_out_rgb>;
+                       };
+               };
+       };
+
        usbotg_hs_phy: usb-phy {
                #phy-cells = <0>;
                compatible = "usb-nop-xceiv";
@@ -99,6 +130,26 @@ &i2c1 {
        status = "okay";
 };
 
+&dma1 {
+       status = "okay";
+};
+
+&dma2 {
+       status = "okay";
+};
+
+&ltdc {
+       pinctrl-0 = <&ltdc_pins_a>;
+       pinctrl-names = "default";
+       status = "okay";
+
+       port {
+               ltdc_out_rgb: endpoint {
+                       remote-endpoint = <&panel_in_rgb>;
+               };
+       };
+};
+
 &sdio1 {
        status = "okay";
        vmmc-supply = <&mmc_vcard>;
-- 
2.32.0