This patch adds HDMI video output support to the iwg23s board
from iWave. Due to a problem with the bootloader not dealing
with the configuration of one of the pins correctly, we have
to use a gpio-hog for the interrupt line to make sure the pin
is configured as GPIO-input when requesting the interrupt.
Signed-off-by: Fabrizio Castro <fabrizio.castro@xxxxxxxxxxxxxx>
---
arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts | 79 +++++++++++++++++++++++++++++++
1 file changed, 79 insertions(+)
diff --git a/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts b/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
index 77d1824..9f9eb15 100644
--- a/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
+++ b/arch/arm/boot/dts/r8a77470-iwg23s-sbc.dts
@@ -22,6 +22,17 @@
stdout-path = "serial1:115200n8";
};
+ hdmi-out {
+ compatible = "hdmi-connector";
+ type = "a";
+
+ port {
+ hdmi_con: endpoint {
+ remote-endpoint = <&bridge_out>;
+ };
+ };
+ };
+
memory@40000000 {
device_type = "memory";
reg = <0 0x40000000 0 0x20000000>;
@@ -80,10 +91,34 @@
status = "okay";
};
+&du {
+ pinctrl-0 = <&du0_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+
+ ports {
+ port@0 {
+ endpoint {
+ remote-endpoint = <&bridge_in>;
+ };
+ };
+ };
+};
+
&extal_clk {
clock-frequency = <20000000>;
};
+&gpio2 {
+ interrupt-fixup {
+ gpio-hog;
+ gpios = <29 GPIO_ACTIVE_HIGH>;
+ line-name = "hdmi-hpd-int";
+ input;
+ };
+};
+
&i2c3 {
pinctrl-0 = <&i2c3_pins>;
pinctrl-names = "default";
@@ -97,12 +132,56 @@
};
};
+&i2c4 {
+ pinctrl-0 = <&i2c4_pins>;
+ pinctrl-names = "default";
+
+ status = "okay";
+ clock-frequency = <100000>;
+
+ hdmi@39 {
+ compatible = "sil,sii9022";
+ reg = <0x39>;
+ interrupt-parent = <&gpio2>;
+ interrupts = <29 IRQ_TYPE_LEVEL_LOW>;
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ bridge_in: endpoint {
+ remote-endpoint = <&du_out_rgb0>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ bridge_out: endpoint {
+ remote-endpoint = <&hdmi_con>;
+ };
+ };
+ };
+ };
+};
+
&pfc {
avb_pins: avb {
groups = "avb_mdio", "avb_gmii_tx_rx";
function = "avb";
};
+ du0_pins: du0 {
+ groups = "du0_rgb888", "du0_sync", "du0_disp", "du0_clk0_out";
+ function = "du0";
+ };
+
+ i2c4_pins: i2c4 {
+ groups = "i2c4_e";
+ function = "i2c4";
+ };
+
i2c3_pins: i2c3 {
groups = "i2c3_c";
function = "i2c3";
--
2.7.4
