Add devicetree overlay for the Seeed Studio BeagleBone HDMI cape, which provides HDMI output via an ITE IT66121 HDMI bridge and audio support through McASP.
The cape is designed for BeagleBone Green but is also compatible with BeagleBone and BeagleBone Black due to pin compatibility. Link: https://www.seeedstudio.com/Seeed-Studio-BeagleBoner-Green-HDMI-Cape.html Signed-off-by: Kory Maincent (TI) <[email protected]> --- arch/arm/boot/dts/ti/omap/Makefile | 5 + .../boot/dts/ti/omap/am335x-bone-hdmi-00a0.dtso | 157 +++++++++++++++++++++ 2 files changed, 162 insertions(+) diff --git a/arch/arm/boot/dts/ti/omap/Makefile b/arch/arm/boot/dts/ti/omap/Makefile index 52df04328aff2..23ae6df682206 100644 --- a/arch/arm/boot/dts/ti/omap/Makefile +++ b/arch/arm/boot/dts/ti/omap/Makefile @@ -82,6 +82,10 @@ dtb-$(CONFIG_ARCH_OMAP4) += \ omap4-var-stk-om44.dtb \ omap4-xyboard-mz609.dtb \ omap4-xyboard-mz617.dtb + +am335x-bonegreen-hdmi-00a0-dtbs := am335x-bonegreen-eco.dtb \ + am335x-bone-hdmi-00a0.dtbo + dtb-$(CONFIG_SOC_AM33XX) += \ am335x-baltos-ir2110.dtb \ am335x-baltos-ir3220.dtb \ @@ -94,6 +98,7 @@ dtb-$(CONFIG_SOC_AM33XX) += \ am335x-bonegreen.dtb \ am335x-bonegreen-wireless.dtb \ am335x-bonegreen-eco.dtb \ + am335x-bonegreen-hdmi-00a0.dtb \ am335x-chiliboard.dtb \ am335x-cm-t335.dtb \ am335x-evm.dtb \ diff --git a/arch/arm/boot/dts/ti/omap/am335x-bone-hdmi-00a0.dtso b/arch/arm/boot/dts/ti/omap/am335x-bone-hdmi-00a0.dtso new file mode 100644 index 0000000000000..f43f44c79c96d --- /dev/null +++ b/arch/arm/boot/dts/ti/omap/am335x-bone-hdmi-00a0.dtso @@ -0,0 +1,157 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * 2017 Copyright (c) Seeed Technology Inc. All right reserved. + * Author: Baozhu Zuo <[email protected]> + * Copyright (c) Bootlin 2026 + * + * This device tree overlay is compatible with the BeagleBone Black, Green + * and their subversions. + */ + +/dts-v1/; +/plugin/; + +#include <dt-bindings/pinctrl/am33xx.h> +#include <dt-bindings/interrupt-controller/irq.h> + +&{/} { + hdmi0: connector-hdmi { + compatible = "hdmi-connector"; + label = "hdmi"; + type = "a"; + port { + hdmi_connector_in: endpoint { + remote-endpoint = <&it66121_out>; + }; + }; + }; + + clk_mcasp0_fixed: clk-mcasp0-fixed { + #clock-cells = <0>; + compatible = "fixed-clock"; + clock-frequency = <24576000>; + }; + + clk_mcasp0: clk-mcasp0 { + #clock-cells = <0>; + compatible = "gpio-gate-clock"; + clocks = <&clk_mcasp0_fixed>; + enable-gpios = <&gpio1 27 0>; + }; + + sound { + compatible = "simple-audio-card"; + simple-audio-card,name = "TI BeagleBone Green HDMI cape"; + simple-audio-card,format = "i2s"; + simple-audio-card,bitclock-master = <&sound_master>; + simple-audio-card,frame-master = <&sound_master>; + + sound_master: simple-audio-card,cpu { + sound-dai = <&mcasp0>; + clocks = <&clk_mcasp0>; + }; + + simple-audio-card,codec { + sound-dai = <&it66121>; + }; + }; +}; + +&am33xx_pinmux { + bb_lcd_pins: pinmux-bb-lcd-pins { + pinctrl-single,pins = < + AM33XX_PADCONF(AM335X_PIN_LCD_DATA0, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA1, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA2, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA3, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA4, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA5, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA6, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA7, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA8, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA9, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA10, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA11, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA12, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA13, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA14, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_DATA15, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_VSYNC, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_HSYNC, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_PCLK, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_LCD_AC_BIAS_EN, PIN_OUTPUT, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_GPMC_ADVN_ALE, PIN_OUTPUT_PULLDOWN, MUX_MODE7) + AM33XX_PADCONF(AM335X_PIN_GPMC_OEN_REN, PIN_OUTPUT_PULLDOWN, MUX_MODE7) + AM33XX_PADCONF(AM335X_PIN_GPMC_WEN, PIN_INPUT, MUX_MODE7) + >; + }; + mcasp0_pins: mcasp0-pins { + pinctrl-single,pins = < + AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKX, PIN_INPUT_PULLUP, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_MCASP0_AHCLKR, PIN_OUTPUT_PULLDOWN, MUX_MODE2) + AM33XX_PADCONF(AM335X_PIN_MCASP0_FSX, PIN_OUTPUT_PULLUP, MUX_MODE0) + AM33XX_PADCONF(AM335X_PIN_MCASP0_ACLKX, PIN_OUTPUT_PULLDOWN, MUX_MODE0) + >; + }; +}; + +&i2c2 { + status = "okay"; + #address-cells = <1>; + #size-cells = <0>; + + it66121: it66121 { + compatible = "ite,it66121"; + reg = <0x4d>; + pinctrl-names = "default"; + pinctrl-0 = <&bb_lcd_pins>; + + #sound-dai-cells = <0>; + + interrupt-parent = <&gpio2>; + interrupts = <4 IRQ_TYPE_EDGE_RISING>; + ports { + #address-cells = <1>; + #size-cells = <0>; + + port@0 { + reg = <0>; + it66121_in: endpoint { + bus-width = <24>; + remote-endpoint = <&lcdc_0>; + }; + }; + + port@1 { + reg = <1>; + it66121_out: endpoint { + remote-endpoint = <&hdmi_connector_in>; + }; + }; + }; + }; +}; + +&lcdc { + status = "okay"; + blue-and-red-wiring = "straight"; + port { + lcdc_0: endpoint@0 { + remote-endpoint = <&it66121_in>; + }; + }; +}; + + +&mcasp0 { + status = "okay"; + #sound-dai-cells = <0>; + pinctrl-names = "default"; + pinctrl-0 = <&mcasp0_pins>; + op-mode = <0>; + tdm-slots = <2>; + serial-dir = < 0 0 1 0 >; + tx-num-evt = <32>; + rx-num-evt = <32>; +}; + -- 2.43.0
