From cac457dcd4e422adc96572e54f4637a15453c06a Mon Sep 17 00:00:00 2001
From: Felix Gerking <felix.gerking@garz-fricke.com>
Date: Thu, 3 Nov 2022 09:04:04 +0100
Subject: [PATCH] dts:mc3:hdmi: Add onboard HDMI support
At the moment there is a problem with the HDMI hot plug detection (HPD)
in combination with the eARC. The HPD only works correctly when
the EARC_N_HPD signal is disconnected. Simply enabling or disabling the
xcvr (eARC) controller does not result in a valid HPD.
HDMI works when the eARC is not connected.
The 5V fault detection is currently not supported.
BCS 746-000949
---
arch/arm64/boot/dts/seconorth/mc3.dtsi | 60 ++++++++++++++++++++++++++
1 file changed, 60 insertions(+)
diff --git a/arch/arm64/boot/dts/seconorth/mc3.dtsi b/arch/arm64/boot/dts/seconorth/mc3.dtsi
index 4d4a0c5dce02a..edb45120b9873 100644
--- a/arch/arm64/boot/dts/seconorth/mc3.dtsi
+++ b/arch/arm64/boot/dts/seconorth/mc3.dtsi
@@ -137,6 +137,21 @@ reg_usdhc2_vqmmc: regulator-usdhc2-vqmmc {
states = <1800000 1>, <3300000 0>;
};
+ sound_hdmi: sound-hdmi {
+ compatible = "fsl,imx-audio-hdmi";
+ model = "audio-hdmi";
+ audio-cpu = <&aud2htx>;
+ hdmi-out;
+ constraint-rate = <44100>,
+ <88200>,
+ <176400>,
+ <32000>,
+ <48000>,
+ <96000>,
+ <192000>;
+ status = "okay";
+ };
+
usbhub_reset: usbhub-gpio-reset {
compatible = "gpio-reset";
pinctrl-names = "USBHUB_RST";
@@ -305,6 +320,24 @@ &vpu_v4l2 {
status = "okay";
};
+/* HDMI onboard */
+
+&irqsteer_hdmi {
+ status = "okay";
+};
+
+&hdmi_blk_ctrl {
+ status = "okay";
+};
+
+&hdmi_pavi {
+ status = "okay";
+};
+
+&hdmi {
+ status = "okay";
+};
+
/*
* For some reason, without the hdmiphy the device stalls
* during the boot process. Further investigation into why
@@ -314,6 +347,23 @@ &hdmiphy {
status = "okay";
};
+&lcdif3 {
+ status = "okay";
+
+ /*
+ * thres-low and thres-high values were taken from
+ * imx8mp-evk.dtb
+ */
+ thres-low = <1 2>; /* (FIFO * 1 / 2) */
+ thres-high = <3 4>; /* (FIFO * 3 / 4) */
+};
+
+/* HDMI Audio */
+
+&aud2htx {
+ status = "okay";
+};
+
&i2c1 {
clock-frequency = <100000>;
pinctrl-names = "default";
@@ -489,6 +539,16 @@ &i2c4 {
&iomuxc {
pinctrl-names = "default";
+ pinctrl-0 = <&pinctrl_hog>;
+
+ pinctrl_hog: hoggrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_HDMI_DDC_SCL__HDMIMIX_HDMI_SCL 0x400001c3
+ MX8MP_IOMUXC_HDMI_DDC_SDA__HDMIMIX_HDMI_SDA 0x400001c3
+ MX8MP_IOMUXC_HDMI_HPD__HDMIMIX_HDMI_HPD 0x40000019
+ MX8MP_IOMUXC_HDMI_CEC__HDMIMIX_HDMI_CEC 0x40000019
+ >;
+ };
pinctrl_buzzer_pwm4: pwm-buzzer {
fsl,pins = <MX8MP_IOMUXC_SAI3_MCLK__PWM4_OUT 0x80000000>;
--
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