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charset="utf-8" Add ti,j721s2-audio-refclk as a supported compatible string in the ti,am62-audio-refclk binding. J721S2 uses the same audio reference clock IP block first introduced on AM62. Per writing-bindings guidelines, the J721S2-specific compatible is added as the primary string with ti,am62-audio-refclk as the fallback. Also extend the ti,j721e-system-controller clock-controller@ child pattern to accept audio-refclk schemas alongside ehrpwm-tbclk via a oneOf constraint, fixing the alphanumerical ordering of $refs. Signed-off-by: Moteen Shah Reviewed-by: Rob Herring (Arm) --- .../devicetree/bindings/clock/ti,am62-audio-refclk.yaml | 8 ++++++-- .../bindings/soc/ti/ti,j721e-system-controller.yaml | 6 ++++-- 2 files changed, 10 insertions(+), 4 deletions(-) diff --git a/Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.y= aml b/Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml index b2e40bd39a3af..6c8fb0793070d 100644 --- a/Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml +++ b/Documentation/devicetree/bindings/clock/ti,am62-audio-refclk.yaml @@ -11,8 +11,12 @@ maintainers: =20 properties: compatible: - items: - - const: ti,am62-audio-refclk + oneOf: + - items: + - const: ti,am62-audio-refclk + - items: + - const: ti,j721s2-audio-refclk + - const: ti,am62-audio-refclk =20 reg: maxItems: 1 diff --git a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-contr= oller.yaml b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-contr= oller.yaml index f3bd0be3b279f..364be49f8c7c7 100644 --- a/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.y= aml +++ b/Documentation/devicetree/bindings/soc/ti/ti,j721e-system-controller.y= aml @@ -53,9 +53,11 @@ patternProperties: =20 "^clock-controller@[0-9a-f]+$": type: object - $ref: /schemas/clock/ti,am654-ehrpwm-tbclk.yaml# + oneOf: + - $ref: /schemas/clock/ti,am62-audio-refclk.yaml# + - $ref: /schemas/clock/ti,am654-ehrpwm-tbclk.yaml# description: - Clock provider for TI EHRPWM nodes. + Clock provider for TI EHRPWM or Audio Reference Clock nodes. =20 "phy@[0-9a-f]+$": type: object --=20 2.34.1 From nobody Thu Sep 24 12:53:42 2026 Received: from mx0b-0002e601.pphosted.com (mx0b-0002e601.pphosted.com [148.163.154.28]) (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 9F1D03B059C; 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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 audio_refclk1 clock node to k3-j721s2-main.dtsi - 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-mux controller to route I2C3 lines - Add GPIO hogs to route McASP serializers - Set idle-state to 0 in mux0 and mux1 for McASP signal routing - Disable main_mcan3 and main_mcan5 as they conflict with McASP4 signal routing via mux0 and mux1 Co-developed-by: Moteen Shah Signed-off-by: Jayesh Choudhary Signed-off-by: Moteen Shah Reviewed-by: Hari Prasath Gujulan Elango Reviewed-by: Sen Wang --- arch/arm64/boot/dts/ti/Makefile | 4 + .../boot/dts/ti/k3-j721s2-evm-audio.dtso | 157 ++++++++++++++++++ arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi | 9 + 3 files changed, 170 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 fcfec8ea31658..bf52ae3e6a023 100644 --- a/arch/arm64/boot/dts/ti/Makefile +++ b/arch/arm64/boot/dts/ti/Makefile @@ -196,6 +196,7 @@ 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 @@ -408,6 +409,8 @@ 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 \ @@ -504,6 +507,7 @@ 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 0000000000000..ac5a827e1b750 --- /dev/null +++ b/arch/arm64/boot/dts/ti/k3-j721s2-evm-audio.dtso @@ -0,0 +1,157 @@ +// 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>; +}; + +&main_mcan3 { + /* Conflicts with McASP4 signal routing via mux0 */ + status =3D "disabled"; +}; + +&main_mcan5 { + /* Conflicts with McASP4 signal routing via mux1 */ + status =3D "disabled"; +}; + +&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 + >; +}; diff --git a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi b/arch/arm64/boot/d= ts/ti/k3-j721s2-main.dtsi index 1228ac5711bf0..36a01a06dd254 100644 --- a/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi +++ b/arch/arm64/boot/dts/ti/k3-j721s2-main.dtsi @@ -74,6 +74,15 @@ ehrpwm_tbclk: clock-controller@140 { reg =3D <0x140 0x18>; #clock-cells =3D <1>; }; + + audio_refclk1: clock-controller@42e4 { + compatible =3D "ti,j721s2-audio-refclk", "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>; + }; }; =20 main_ehrpwm0: pwm@3000000 { --=20 2.34.1