ARM: dts: Augment panel setting for Integrator/CP
This adds the actual VGA DAC bridge that is used in the
Versatile AB, and sets the mode to 640x480 VGA and
routes the CLCD pads appropriately.
Cc: Liviu Dudau <liviu.dudau@arm.com>
Cc: Mali DP Maintainers <malidp@foss.arm.com>
Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
diff --git a/arch/arm/boot/dts/integratorcp.dts b/arch/arm/boot/dts/integratorcp.dts
index a185ab8..01fa229 100644
--- a/arch/arm/boot/dts/integratorcp.dts
+++ b/arch/arm/boot/dts/integratorcp.dts
@@ -192,6 +192,43 @@
interrupts = <27>;
};
+ bridge {
+ compatible = "ti,ths8134a", "ti,ths8134";
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+
+ vga_bridge_in: endpoint {
+ remote-endpoint = <&clcd_pads_vga_dac>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+
+ vga_bridge_out: endpoint {
+ remote-endpoint = <&vga_con_in>;
+ };
+ };
+ };
+ };
+
+ vga {
+ compatible = "vga-connector";
+
+ port {
+ vga_con_in: endpoint {
+ remote-endpoint = <&vga_bridge_out>;
+ };
+ };
+ };
+
fpga {
/*
* These PrimeCells are at the same location and using
@@ -254,39 +291,27 @@
interrupts = <22>;
clocks = <&auxosc>, <&pclk>;
clock-names = "clcdclk", "apb_pclk";
+ /* 640x480 16bpp @ 25.175MHz is 36827428 bytes/s */
+ max-memory-bandwidth = <40000000>;
- port {
- /*
- * The VGA connected is implemented with a
- * THS8134A triple DAC that can be run in 24bit
- * or 16bit RGB mode.
- */
- clcd_pads: endpoint {
- remote-endpoint = <&clcd_panel>;
- arm,pl11x,tft-r0g0b0-pads = <1 7 13>;
- };
- };
-
- panel {
- compatible = "panel-dpi";
-
- port {
- clcd_panel: endpoint {
- remote-endpoint = <&clcd_pads>;
- };
- };
-
- /* Standard 640x480 VGA timings */
- panel-timing {
- clock-frequency = <25175000>;
- hactive = <640>;
- hback-porch = <48>;
- hfront-porch = <16>;
- hsync-len = <96>;
- vactive = <480>;
- vback-porch = <33>;
- vfront-porch = <10>;
- vsync-len = <2>;
+ /*
+ * This port is routed through a PLD (Programmable
+ * Logic Device) that routes the output from the CLCD
+ * (after transformations) to the VGA DAC and also an
+ * external panel connector. The PLD is essential for
+ * supporting RGB565/BGR565.
+ *
+ * The signals from the port thus reaches two endpoints.
+ * The PLD is managed through a few special bits in the
+ * FPGA "sysreg".
+ *
+ * This arrangement can be clearly seen in
+ * ARM DUI 0225D, page 3-41, figure 3-19.
+ */
+ port@0 {
+ clcd_pads_vga_dac: endpoint {
+ remote-endpoint = <&vga_bridge_in>;
+ arm,pl11x,tft-r0g0b0-pads = <0 8 16>;
};
};
};
