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Thu, 31 Aug 2023 04:51:46 -0700 (PDT) Received: from aford-B741.lan ([2601:447:d001:897f:2a0f:e1d5:3688:f2b8]) by smtp.gmail.com with ESMTPSA id o28-20020a02cc3c000000b0042b1d495aecsm353529jap.123.2023.08.31.04.51.45 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 31 Aug 2023 04:51:45 -0700 (PDT) From: Adam Ford To: linux-arm-kernel@lists.infradead.org Cc: aford@beaconembedded.com, Adam Ford , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , NXP Linux Team , devicetree@vger.kernel.org, linux-kernel@vger.kernel.org Subject: [PATCH 3/4] arm64: dts: imx8mn-beacon: Add DMIC support Date: Thu, 31 Aug 2023 06:51:27 -0500 Message-Id: <20230831115128.254226-3-aford173@gmail.com> X-Mailer: git-send-email 2.39.2 In-Reply-To: <20230831115128.254226-1-aford173@gmail.com> References: <20230831115128.254226-1-aford173@gmail.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20230831_045148_706531_93239A12 X-CRM114-Status: GOOD ( 11.74 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The baseboard has a connector for a pulse density microphone. This is connected via the micfil interface and uses the DMIC audio codec with the simple-audio-card. Signed-off-by: Adam Ford diff --git a/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi b/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi index 16761975f56e..0b51c0c71423 100644 --- a/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mn-beacon-baseboard.dtsi @@ -4,6 +4,12 @@ */ / { + dmic_codec: dmic-codec { + compatible = "dmic-codec"; + num-channels = <1>; + #sound-dai-cells = <0>; + }; + leds { compatible = "gpio-leds"; @@ -74,6 +80,22 @@ reg_usb_otg_vbus: regulator-usb { enable-active-high; }; + sound-dmic { + compatible = "simple-audio-card"; + simple-audio-card,name = "dmic"; + simple-audio-card,format = "pdm"; + simple-audio-card,bitclock-master = <&dailink_master>; + simple-audio-card,frame-master = <&dailink_master>; + + dailink_master: simple-audio-card,cpu { + sound-dai = <&micfil>; + }; + + simple-audio-card,codec { + sound-dai = <&dmic_codec>; + }; + }; + sound-wm8962 { compatible = "simple-audio-card"; simple-audio-card,name = "wm8962"; @@ -221,6 +243,16 @@ mipi_csi_in: endpoint { }; }; +&micfil { + pinctrl-names = "default"; + pinctrl-0 = <&pinctrl_pdm>; + assigned-clocks = <&clk IMX8MN_CLK_PDM>; + assigned-clock-parents = <&clk IMX8MN_AUDIO_PLL1_OUT>; + assigned-clock-rates = <49152000>; + status = "okay"; + #sound-dai-cells = <0>; +}; + &sai3 { pinctrl-names = "default"; pinctrl-0 = <&pinctrl_sai3>; @@ -311,6 +343,13 @@ MX8MN_IOMUXC_SAI2_MCLK_GPIO4_IO27 0x19 >; }; + pinctrl_pdm: pdmgrp { + fsl,pins = < + MX8MN_IOMUXC_SAI5_RXC_PDM_CLK 0xd6 + MX8MN_IOMUXC_SAI5_RXD0_PDM_BIT_STREAM0 0xd6 + >; + }; + pinctrl_reg_usb_otg: reg-otggrp { fsl,pins = < MX8MN_IOMUXC_SAI3_RXC_GPIO4_IO29 0x19