The EK874 is advertised as compatible with panel IDK-2121WR from
Advantech, however the panel isn't sold alongside the board.
A new dts, adding everything that's required to get the panel to
to work with the EK874, is the most convenient way to support the
EK874 when it's connected to the IDK-2121WR.
Signed-off-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
---
v1->v2:
* Added comment for lvds-connector-en-gpio
* Renamed &lvds0_panel_in to panel_in0
* Renamed &lvds1_panel_in to panel_in1
Geert,
at this point in time no other board uses this display, can we
postpone the creation of the .dtsi file to when there'll be another
user (if any)?
Thanks,
Fab
arch/arm64/boot/dts/renesas/Makefile | 3 +-
.../boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts | 116 +++++++++++++++++++++
2 files changed, 118 insertions(+), 1 deletion(-)
create mode 100644 arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts
diff --git a/arch/arm64/boot/dts/renesas/Makefile b/arch/arm64/boot/dts/renesas/Makefile
index 42b74c2..ce48478 100644
--- a/arch/arm64/boot/dts/renesas/Makefile
+++ b/arch/arm64/boot/dts/renesas/Makefile
@@ -1,7 +1,8 @@
# SPDX-License-Identifier: GPL-2.0
dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m.dtb
dtb-$(CONFIG_ARCH_R8A774A1) += r8a774a1-hihope-rzg2m-ex.dtb
-dtb-$(CONFIG_ARCH_R8A774C0) += r8a774c0-cat874.dtb r8a774c0-ek874.dtb
+dtb-$(CONFIG_ARCH_R8A774C0) += r8a774c0-cat874.dtb r8a774c0-ek874.dtb \
+ r8a774c0-ek874-idk-2121wr.dtb
dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-salvator-x.dtb r8a7795-h3ulcb.dtb
dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-h3ulcb-kf.dtb
dtb-$(CONFIG_ARCH_R8A7795) += r8a7795-salvator-xs.dtb
diff --git a/arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts b/arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts
new file mode 100644
index 0000000..df8a60b
--- /dev/null
+++ b/arch/arm64/boot/dts/renesas/r8a774c0-ek874-idk-2121wr.dts
@@ -0,0 +1,116 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Device Tree Source for the Silicon Linux RZ/G2E evaluation kit (EK874),
+ * connected to an Advantech IDK-2121WR 21.5" LVDS panel
+ *
+ * Copyright (C) 2019 Renesas Electronics Corp.
+ */
+
+#include "r8a774c0-ek874.dts"
+
+/ {
+ backlight: backlight {
+ compatible = "pwm-backlight";
+ pwms = <&pwm5 0 50000>;
+
+ brightness-levels = <0 4 8 16 32 64 128 255>;
+ default-brightness-level = <6>;
+
+ power-supply = <®_12p0v>;
+ enable-gpios = <&gpio6 12 GPIO_ACTIVE_HIGH>;
+ };
+
+ panel-lvds {
+ compatible = "advantech,idk-2121wr", "panel-lvds";
+
+ width-mm = <476>;
+ height-mm = <268>;
+
+ data-mapping = "vesa-24";
+
+ panel-timing {
+ clock-frequency = <148500000>;
+ hactive = <1920>;
+ vactive = <1080>;
+ hsync-len = <44>;
+ hfront-porch = <88>;
+ hback-porch = <148>;
+ vfront-porch = <4>;
+ vback-porch = <36>;
+ vsync-len = <5>;
+ };
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ panel_in0: endpoint {
+ remote-endpoint = <&lvds0_out>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ panel_in1: endpoint {
+ remote-endpoint = <&lvds1_out>;
+ };
+ };
+ };
+ };
+};
+
+&gpio0 {
+ /*
+ * When GP0_17 is low LVDS[01] are connected to the LVDS connector
+ * When GP0_17 is high LVDS[01] are connected to the LT8918L
+ */
+ lvds-connector-en-gpio{
+ gpio-hog;
+ gpios = <17 GPIO_ACTIVE_HIGH>;
+ output-low;
+ line-name = "lvds-connector-en-gpio";
+ };
+};
+
+&lvds0 {
+ renesas,swap-data;
+
+ ports {
+ port@1 {
+ lvds0_out: endpoint {
+ remote-endpoint = <&panel_in0>;
+ };
+ };
+ };
+};
+
+&lvds1 {
+ status = "okay";
+
+ clocks = <&cpg CPG_MOD 727>, <&x13_clk>, <&extal_clk>;
+ clock-names = "fck", "dclkin.0", "extal";
+
+ ports {
+ port@1 {
+ lvds1_out: endpoint {
+ remote-endpoint = <&panel_in1>;
+ };
+ };
+ };
+};
+
+&pfc {
+ pwm5_pins: pwm5 {
+ groups = "pwm5_a";
+ function = "pwm5";
+ };
+};
+
+&pwm5 {
+ pinctrl-0 = <&pwm5_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+};
--
2.7.4
