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charset="utf-8" The ti,j721e-system-controller binding currently only allows clock-controller@ child nodes to reference the ti,am654-ehrpwm-tbclk schema. However, the system controller on J721S2 also contains audio reference clock controllers (ti,am62-audio-refclk) that use the same clock-controller@XXXX naming pattern. Hence, extend the clock-controller pattern to accept either ehrpwm-tbclk or audio-refclk schemas using a oneOf constraint. Signed-off-by: Moteen Shah --- .../bindings/soc/ti/ti,j721e-system-controller.yaml | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-contr= oller.yaml b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-contr= oller.yaml index f3bd0be3b279..d5d84a8f1257 100644 --- a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.y= aml +++ b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.y= aml @@ -53,9 +53,11 @@ patternProperties: =20 "^clock-controller@[0-9a-f]+$": type: object - $ref: /schemas/clock/ti,am654-ehrpwm-tbclk.yaml# + oneOf: + - $ref: /schemas/clock/ti,am654-ehrpwm-tbclk.yaml# + - $ref: /schemas/clock/ti,am62-audio-refclk.yaml# description: - Clock provider for TI EHRPWM nodes. + Clock provider for TI EHRPWM or Audio Reference Clock nodes. =20 "phy@[0-9a-f]+$": type: object --=20 2.34.1 From nobody Thu Apr 2 00:15:17 2026 Received: from SJ2PR03CU001.outbound.protection.outlook.com (mail-westusazon11012036.outbound.protection.outlook.com [52.101.43.36]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 8BA383B582C; 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charset="utf-8" From: Jayesh Choudhary Add device tree overlay to enable analog audio support on J721S2-EVM using PCM3168A codec connected to McASP4 serializers. - Add nodes for sound-card, audio codec, I2C3 and McASP4 - Add pinmux for I2C3, McASP4, AUDIO_EXT_REFCLK1 and WKUP_GPIO_0 - Add GPIO expander (TCA6408) for codec control - Add GPIO hogs to route I2C3 lines and McASP serializers - Set idle-state to 0 in mux0 and mux1 for McASP signal routing Signed-off-by: Jayesh Choudhary Co-developed-by: Moteen Shah Signed-off-by: Moteen Shah --- arch/arm64/boot/dts/ti/Makefile | 4 + .../boot/dts/ti/k3-j721s2-evm-audio.dtso | 161 ++++++++++++++++++ 2 files changed, 165 insertions(+) create mode 100644 arch/arm64/boot/dts/ti/k3-j721s2-evm-audio.dtso diff --git a/arch/arm64/boot/dts/ti/Makefile b/arch/arm64/boot/dts/ti/Makef= ile index ba01a929e06f..17048f2f5043 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -138,6 +138,7 @@ dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-common-proc-board.= dtb dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-evm-gesi-exp-board.dtbo k3-j721s2-evm-dtbs :=3D k3-j721s2-common-proc-board.dtb k3-j721s2-evm-gesi= -exp-board.dtbo dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-evm.dtb +dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-evm-audio.dtbo dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-evm-pcie1-ep.dtbo dtb-$(CONFIG_ARCH_K3) +=3D k3-j721s2-evm-usb0-type-a.dtbo =20 @@ -264,6 +265,8 @@ k3-j721e-evm-pcie1-ep-dtbs :=3D k3-j721e-common-proc-bo= ard.dtb \ k3-j721e-evm-pcie1-ep.dtbo k3-j721e-sk-csi2-dual-imx219-dtbs :=3D k3-j721e-sk.dtb \ k3-j721e-sk-csi2-dual-imx219.dtbo +k3-j721s2-evm-audio-dtbs :=3D k3-j721s2-common-proc-board.dtb \ + k3-j721s2-evm-audio.dtbo k3-j721s2-evm-pcie1-ep-dtbs :=3D k3-j721s2-common-proc-board.dtb \ k3-j721s2-evm-pcie1-ep.dtbo k3-j721s2-evm-usb0-type-a-dtbs :=3D k3-j721s2-common-proc-board.dtb \ @@ -328,6 +331,7 @@ dtb- +=3D k3-am625-beagleplay-csi2-ov5640.dtb \ k3-j721e-evm-pcie0-ep.dtb \ k3-j721e-evm-pcie1-ep.dtb \ k3-j721e-sk-csi2-dual-imx219.dtb \ + k3-j721s2-evm-audio.dtb \ k3-j721s2-evm-pcie1-ep.dtb \ k3-j721s2-evm-usb0-type-a.dtb \ k3-j722s-evm-csi2-quad-rpi-cam-imx219.dtb \ diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-evm-audio.dtso b/arch/arm64/b= oot/dts/ti/k3-j721s2-evm-audio.dtso new file mode 100644 index 000000000000..2a3ff1cfc650 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j721s2-evm-audio.dtso @@ -0,0 +1,161 @@ +// SPDX-License-Identifier: GPL-2.0-only OR MIT +/* + * Device Tree Overlay for J721S2 Audio Support + * + * Copyright (C) 2026 Texas Instruments Incorporated - https://www.ti.com/ + */ + +/dts-v1/; +/plugin/; + +#include + +#include "k3-pinctrl.h" + +&{/} { + codec_audio: sound { + compatible =3D "ti,j7200-cpb-audio"; + model =3D "j721s2-cpb"; + + ti,cpb-mcasp =3D <&mcasp4>; + ti,cpb-codec =3D <&pcm3168a_1>; + + clocks =3D <&k3_clks 213 0>, <&k3_clks 213 1>, + <&k3_clks 157 299>, <&k3_clks 157 328>; + clock-names =3D "cpb-mcasp-auxclk", "cpb-mcasp-auxclk-48000", + "cpb-codec-scki", "cpb-codec-scki-48000"; + }; + + i2c_mux: mux-controller-2 { + compatible =3D "gpio-mux"; + #mux-state-cells =3D <1>; + mux-gpios =3D <&wkup_gpio0 54 GPIO_ACTIVE_HIGH>; + idle-state =3D <1>; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&main_i2c3_mux_pins_default>; + }; +}; + +&main_pmx0 { + mcasp4_pins_default: mcasp4-default-pins { + pinctrl-single,pins =3D < + J721S2_IOPAD(0x0c8, PIN_OUTPUT_PULLDOWN, 1) /* (AD28) MCASP4_ACLKX */ + J721S2_IOPAD(0x06c, PIN_OUTPUT_PULLDOWN, 1) /* (V26) MCASP4_AFSX */ + J721S2_IOPAD(0x068, PIN_INPUT_PULLDOWN, 1) /* (U28) MCASP4_AXR1 */ + J721S2_IOPAD(0x0c4, PIN_OUTPUT_PULLDOWN, 1) /* (AB26) MCASP4_AXR2 */ + J721S2_IOPAD(0x070, PIN_OUTPUT_PULLDOWN, 1) /* (R27) MCASP4_AXR3 */ + >; + }; + + audio_ext_refclk1_pins_default: audio-ext-refclk1-default-pins { + pinctrl-single,pins =3D < + J721S2_IOPAD(0x078, PIN_OUTPUT, 1) /* (Y25) MCAN2_RX.AUDIO_EXT_REFCLK1 = */ + >; + }; +}; + +&wkup_pmx2 { + main_i2c3_mux_pins_default: main-i2c3-mux-default-pins { + pinctrl-single,pins =3D < + J721S2_WKUP_IOPAD(0x038, PIN_OUTPUT, 7) /* (B27) WKUP_GPIO0_54 */ + >; + }; +}; + +&exp2 { + p09-hog { + /* P09 - MCASP/TRACE_MUX_S0 */ + gpio-hog; + gpios =3D <9 GPIO_ACTIVE_HIGH>; + output-low; + line-name =3D "MCASP/TRACE_MUX_S0"; + }; + + p10-hog { + /* P10 - MCASP/TRACE_MUX_S1 */ + gpio-hog; + gpios =3D <10 GPIO_ACTIVE_HIGH>; + output-high; + line-name =3D "MCASP/TRACE_MUX_S1"; + }; +}; + +&mux0 { + idle-state =3D <0>; +}; + +&mux1 { + idle-state =3D <0>; +}; + +&scm_conf { + #address-cells =3D <1>; + #size-cells =3D <1>; + + audio_refclk1: clock-controller@42e4 { + compatible =3D "ti,am62-audio-refclk"; + reg =3D <0x42e4 0x4>; + clocks =3D <&k3_clks 157 299>; + assigned-clocks =3D <&k3_clks 157 299>; + assigned-clock-parents =3D <&k3_clks 157 328>; + #clock-cells =3D <0>; + }; +}; + +&k3_clks { + /* Configure AUDIO_EXT_REFCLK1 pin as output */ + pinctrl-names =3D "default"; + pinctrl-0 =3D <&audio_ext_refclk1_pins_default>; +}; + +&main_i2c3 { + status =3D "okay"; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&main_i2c3_pins_default>; + clock-frequency =3D <400000>; + mux-states =3D <&i2c_mux 1>; + #address-cells =3D <1>; + #size-cells =3D <0>; + + exp3: gpio@20 { + compatible =3D "ti,tca6408"; + reg =3D <0x20>; + gpio-controller; + #gpio-cells =3D <2>; + gpio-line-names =3D "CODEC_RSTZ", "CODEC_SPARE1", + "UB926_RESETN", "UB926_LOCK", + "UB926_PWR_SW_CNTRL", "UB926_TUNER_RESET", + "UB926_GPIO_SPARE"; + }; + + pcm3168a_1: audio-codec@44 { + compatible =3D "ti,pcm3168a"; + reg =3D <0x44>; + #sound-dai-cells =3D <1>; + reset-gpios =3D <&exp3 0 GPIO_ACTIVE_LOW>; + clocks =3D <&audio_refclk1>; + clock-names =3D "scki"; + VDD1-supply =3D <&vsys_3v3>; + VDD2-supply =3D <&vsys_3v3>; + VCCAD1-supply =3D <&vsys_5v0>; + VCCAD2-supply =3D <&vsys_5v0>; + VCCDA1-supply =3D <&vsys_5v0>; + VCCDA2-supply =3D <&vsys_5v0>; + }; +}; + +&mcasp4 { + status =3D "okay"; + #sound-dai-cells =3D <0>; + pinctrl-names =3D "default"; + pinctrl-0 =3D <&mcasp4_pins_default>; + op-mode =3D <0>; /* MCASP_IIS_MODE */ + tdm-slots =3D <2>; + auxclk-fs-ratio =3D <256>; + serial-dir =3D < /* 0: INACTIVE, 1: TX, 2: RX */ + 0 2 1 1 + 0 0 0 0 + 0 0 0 0 + 0 0 0 0 + >; +}; --=20 2.34.1