[PATCH 2/2] arm64: dts: imx8mp libra: add peb-av-10 expansion board overlay

Yashwanth Varakala
2025-11-11T14:34:28Z

Add an overlay of expansion board (PEB-AV-10) that supports multimedia
interfaces, 3.5mm headphone jack, a USB-A port and LVDS, backlight
connectors can be connected to the imx8mp libra. Audio works when no
display is connected to expansion board.

A separate overlay for Powertip display, based on peb-av-10.dtsi and
intended for use with PEB-AV-10 expansion board, will be added
later as display support is not yet available.

Signed-off-by: Yashwanth Varakala <y.varakala@phytec.de>
---
arch/arm64/boot/dts/freescale/Makefile | 3 +
.../imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi | 196 ++++++++++++++++++
.../imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtso | 9 +
3 files changed, 208 insertions(+)
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi
create mode 100644 arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtso

diff --git a/arch/arm64/boot/dts/freescale/Makefile b/arch/arm64/boot/dts/freescale/Makefile
index eb38dcc76b84..0d2bd8d1d3b6 100644
--- a/arch/arm64/boot/dts/freescale/Makefile
+++ b/arch/arm64/boot/dts/freescale/Makefile
@@ -223,8 +223,11 @@ imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra-dtbs += imx8mp-libra-rdk-fpsc.dtb \
imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtbo
imx8mp-libra-rdk-fpsc-lvds-ph128800t006-zhc01-dtbs += imx8mp-libra-rdk-fpsc.dtb \
imx8mp-libra-rdk-fpsc-lvds-ph128800t006-zhc01.dtbo
+imx8mp-libra-rdk-fpsc-lvds-peb-av-10-dtbs += imx8mp-libra-rdk-fpsc.dtb \
+ imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtbo
dtb-$(CONFIG_ARCH_MXC) += imx8mp-libra-rdk-fpsc-lvds-etml1010g3dra.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-libra-rdk-fpsc-lvds-ph128800t006-zhc01.dtb
+dtb-$(CONFIG_ARCH_MXC) += imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-msc-sm2s-ep1.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-navqp.dtb
dtb-$(CONFIG_ARCH_MXC) += imx8mp-nitrogen-enc-carrier-board.dtb
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi
new file mode 100644
index 000000000000..6574dfbb32f7
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi
@@ -0,0 +1,196 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ */
+
+#include <dt-bindings/gpio/gpio.h>
+#include <dt-bindings/clock/imx8mp-clock.h>
+#include "imx8mp-pinfunc.h"
+
+&{/} {
+
+ backlight_lvds1: backlight-lvds1 {
+ compatible = "pwm-backlight";
+ pinctrl-0 = <&pinctrl_lvds1>;
+ pinctrl-names = "default";
+ power-supply = <&reg_vcc_12v>;
+ status = "disabled";
+ };
+
+ panel_lvds1: panel-lvds1 {
+ backlight = <&backlight_lvds1>;
+ power-supply = <&reg_vdd_3v3>;
+ status = "disabled";
+
+ port {
+ panel1_in: endpoint {
+ remote-endpoint = <&ldb_lvds_ch1>;
+ };
+ };
+ };
+
+ reg_vcc_12v: regulator-12v {
+ compatible = "regulator-fixed";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <12000000>;
+ regulator-min-microvolt = <12000000>;
+ regulator-name = "VCC_12V";
+ };
+
+ reg_vcc_1v8_audio: regulator-1v8 {
+ compatible = "regulator-fixed";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <1800000>;
+ regulator-min-microvolt = <1800000>;
+ regulator-name = "VCC_1V8_Audio";
+ };
+
+ reg_vcc_3v3_analog: regulator-3v3 {
+ compatible = "regulator-fixed";
+ regulator-always-on;
+ regulator-boot-on;
+ regulator-max-microvolt = <3300000>;
+ regulator-min-microvolt = <3300000>;
+ regulator-name = "VCC_3V3_Analog";
+ };
+
+ sound {
+ compatible = "simple-audio-card";
+ simple-audio-card,name = "snd-peb-av-10";
+ simple-audio-card,format = "i2s";
+ simple-audio-card,bitclock-master = <&dailink_master>;
+ simple-audio-card,frame-master = <&dailink_master>;
+ simple-audio-card,mclk-fs = <32>;
+ simple-audio-card,widgets =
+ "Line", "Line In",
+ "Speaker", "Speaker",
+ "Microphone", "Microphone Jack",
+ "Headphone", "Headphone Jack";
+ simple-audio-card,routing =
+ "Speaker", "SPOP",
+ "Speaker", "SPOM",
+ "Headphone Jack", "HPLOUT",
+ "Headphone Jack", "HPROUT",
+ "LINE1L", "Line In",
+ "LINE1R", "Line In",
+ "MIC3R", "Microphone Jack",
+ "Microphone Jack", "Mic Bias";
+
+ simple-audio-card,codec {
+ sound-dai = <&codec>;
+ };
+
+ dailink_master: simple-audio-card,cpu {
+ sound-dai = <&sai5>;
+ };
+ };
+};
+
+&i2c5 {
+ clock-frequency = <400000>;
+ pinctrl-0 = <&pinctrl_i2c5>;
+ pinctrl-1 = <&pinctrl_i2c5_gpio>;
+ pinctrl-names = "default", "gpio";
+ scl-gpios = <&gpio3 21 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ sda-gpios = <&gpio5 4 (GPIO_ACTIVE_HIGH | GPIO_OPEN_DRAIN)>;
+ #address-cells = <1>;
+ #size-cells = <0>;
+ status = "okay";
+
+ codec: codec@18 {
+ compatible = "ti,tlv320aic3007";
+ reg = <0x18>;
+ pinctrl-0 = <&pinctrl_tlv320>;
+ pinctrl-names = "default";
+ #sound-dai-cells = <0>;
+ ai3x-gpio-func = <0xd 0x0>;
+ ai3x-micbias-vg = <2>;
+ AVDD-supply = <&reg_vcc_3v3_analog>;
+ DRVDD-supply = <&reg_vcc_3v3_analog>;
+ DVDD-supply = <&reg_vcc_1v8_audio>;
+ IOVDD-supply = <&reg_vdd_3v3>;
+ };
+
+ eeprom@57 {
+ compatible = "atmel,24c32";
+ reg = <0x57>;
+ pagesize = <32>;
+ vcc-supply = <&reg_vdd_3v3>;
+ };
+};
+
+&ldb_lvds_ch1 {
+ remote-endpoint = <&panel1_in>;
+};
+
+&pwm2 {
+ pinctrl-0 = <&pinctrl_pwm2>;
+ pinctrl-names = "default";
+};
+
+&sai5 {
+ pinctrl-0 = <&pinctrl_sai5>;
+ pinctrl-names = "default";
+ assigned-clocks = <&clk IMX8MP_CLK_SAI5>;
+ assigned-clock-parents = <&clk IMX8MP_AUDIO_PLL1_OUT>;
+ assigned-clock-rates = <12288000>;
+ clocks = <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI5_IPG>,
+ <&clk IMX8MP_CLK_DUMMY>,
+ <&audio_blk_ctrl IMX8MP_CLK_AUDIOMIX_SAI5_MCLK1>,
+ <&clk IMX8MP_CLK_DUMMY>,
+ <&clk IMX8MP_CLK_DUMMY>,
+ <&clk IMX8MP_AUDIO_PLL1_OUT>,
+ <&clk IMX8MP_AUDIO_PLL2_OUT>;
+ clock-names = "bus", "mclk0", "mclk1", "mclk2", "mclk3", "pll8k",
+ "pll11k";
+ #sound-dai-cells = <0>;
+ fsl,sai-mclk-direction-output;
+ fsl,sai-synchronous-rx;
+ status = "okay";
+};
+
+&iomuxc {
+ pinctrl_i2c5: i2c5grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI5_RXD0__I2C5_SCL 0x400001c2
+ MX8MP_IOMUXC_SPDIF_RX__I2C5_SDA 0x400001c2
+ >;
+ };
+
+ pinctrl_i2c5_gpio: i2c5gpiogrp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI5_RXD0__GPIO3_IO21 0x1e2
+ MX8MP_IOMUXC_SPDIF_RX__GPIO5_IO04 0x1e2
+ >;
+ };
+
+ pinctrl_lvds1: lvds1grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI3_RXFS__GPIO4_IO28 0x12
+ >;
+ };
+
+ pinctrl_pwm2: pwm2grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_GPIO1_IO09__PWM2_OUT 0x12
+ >;
+ };
+
+ pinctrl_sai5: sai5grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI2_RXD0__AUDIOMIX_SAI5_TX_DATA00 0xd6
+ MX8MP_IOMUXC_SAI3_RXD__AUDIOMIX_SAI5_RX_DATA00 0xd6
+ MX8MP_IOMUXC_SAI5_MCLK__AUDIOMIX_SAI5_MCLK 0xd6
+ MX8MP_IOMUXC_SAI5_RXD1__AUDIOMIX_SAI5_TX_SYNC 0xd6
+ MX8MP_IOMUXC_SAI5_RXD2__AUDIOMIX_SAI5_TX_BCLK 0xd6
+ >;
+ };
+
+ pinctrl_tlv320: tlv320grp {
+ fsl,pins = <
+ MX8MP_IOMUXC_SAI3_RXC__GPIO4_IO29 0x16
+ >;
+ };
+};
diff --git a/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtso b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtso
new file mode 100644
index 000000000000..803a199dffa3
--- /dev/null
+++ b/arch/arm64/boot/dts/freescale/imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtso
@@ -0,0 +1,9 @@
+// SPDX-License-Identifier: (GPL-2.0-or-later OR MIT)
+/*
+ * Copyright (C) 2025 PHYTEC Messtechnik GmbH
+ */
+
+/dts-v1/;
+/plugin/;
+
+#include "imx8mp-libra-rdk-fpsc-lvds-peb-av-10.dtsi"
--
2.34.1