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

Shawn Guo
2025-11-16T13:01:18Z

On Tue, Nov 11, 2025 at 03:34:07PM +0100, Yashwanth Varakala wrote:
> 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 {

audio-codec for node name

Shawn

> + 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
>