[PATCH 1/4] ARM: dts: am437x-gp-evm: add HDMI support

[Tomi Valkeinen]

Add HDMI support for AM437x GP EVM. The HDMI uses SiI9022 HDMI encoder,
and is mutually exclusive with the LCD. The choice between LCD and HDMI
is made by booting either with am437x-gp-evm.dtb or
am437x-gp-evm-hdmi.dtb.

Signed-off-by: Tomi Valkeinen <tomi.valkeinen at ti.com>
---
 arch/arm/boot/dts/Makefile               |   1 +
 arch/arm/boot/dts/am437x-gp-evm-hdmi.dts | 112 +++++++++++++++++++++++
 2 files changed, 113 insertions(+)
 create mode 100644 arch/arm/boot/dts/am437x-gp-evm-hdmi.dts

diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile
index b21b3a64641a..612149069180 100644
--- a/arch/arm/boot/dts/Makefile
+++ b/arch/arm/boot/dts/Makefile
@@ -779,6 +779,7 @@ dtb-$(CONFIG_SOC_AM43XX) += \
 	am43x-epos-evm.dtb \
 	am437x-cm-t43.dtb \
 	am437x-gp-evm.dtb \
+	am437x-gp-evm-hdmi.dtb \
 	am437x-idk-evm.dtb \
 	am437x-sbc-t43.dtb \
 	am437x-sk-evm.dtb
diff --git a/arch/arm/boot/dts/am437x-gp-evm-hdmi.dts b/arch/arm/boot/dts/am437x-gp-evm-hdmi.dts
new file mode 100644
index 000000000000..580a1e3e0dcd
--- /dev/null
+++ b/arch/arm/boot/dts/am437x-gp-evm-hdmi.dts
@@ -0,0 +1,112 @@
+// SPDX-License-Identifier: GPL-2.0
+/*
+ * Copyright (C) 2019 Texas Instruments Incorporated - http://www.ti.com/
+ */
+
+/* AM437x GP EVM with HDMI output */
+
+#include "am437x-gp-evm.dts"
+
+/delete-node/ &lcd0;
+
+/ {
+	aliases {
+		display0 = &hdmi;
+	};
+
+	hdmi: connector {
+		compatible = "hdmi-connector";
+		label = "hdmi";
+
+		type = "b";
+
+		port {
+			hdmi_connector_in: endpoint {
+				remote-endpoint = <&sii9022_out>;
+			};
+		};
+	};
+
+	sound at 1 {
+		compatible = "simple-audio-card";
+		simple-audio-card,name = "HDMI";
+		simple-audio-card,format = "i2s";
+		simple-audio-card,bitclock-master = <&hdmi_dailink_master>;
+		simple-audio-card,frame-master = <&hdmi_dailink_master>;
+		hdmi_dailink_master: simple-audio-card,cpu {
+			sound-dai = <&mcasp1>;
+			system-clock-frequency = <24000000>;
+			system-clock-direction-out;
+		};
+
+		simple-audio-card,codec {
+			sound-dai = <&sii9022>;
+		};
+	};
+
+	sii9022_mclk: sii9022_mclk {
+		compatible = "fixed-clock";
+		#clock-cells = <0>;
+		clock-frequency = <12000000>;
+	};
+};
+
+&lcd_bl {
+	status = "disabled";
+};
+
+&sound0 {
+	status = "disabled";
+};
+
+&tlv320aic3106 {
+	status = "disabled";
+};
+
+&i2c1 {
+	sii9022: sii9022 at 3b {
+		#sound-dai-cells = <0>;
+		compatible = "sil,sii9022";
+		reg = <0x3b>;
+
+		interrupt-parent = <&gpio3>;
+		interrupts = <24 IRQ_TYPE_LEVEL_LOW>;
+
+		sil,i2s-data-lanes = < 0 >;
+		clocks = <&sii9022_mclk>;
+		clock-names = "mclk";
+
+		ports {
+			#address-cells = <1>;
+			#size-cells = <0>;
+
+			port at 0 {
+				reg = <0>;
+
+				sii9022_in: endpoint {
+					remote-endpoint = <&dpi_out>;
+				};
+			};
+
+			port at 1 {
+				reg = <1>;
+
+				sii9022_out: endpoint {
+					remote-endpoint = <&hdmi_connector_in>;
+				};
+			};
+		};
+	};
+};
+
+&dpi_out {
+	remote-endpoint = <&sii9022_in>;
+	data-lines = <24>;
+};
+
+/* Override SelLCDorHDMI from am437x-gp-evm.dts to select HDMI */
+&gpio5 {
+	p8 {
+		output-low;
+	};
+};
-- 
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