From: Stefano Radaelli <stefano.radaelli21@gmail.com>
To: Frank Li <Frank.Li@nxp.com>,
linux-kernel@vger.kernel.org, devicetree@vger.kernel.org,
imx@lists.linux.dev, linux-arm-kernel@lists.infradead.org
Cc: pierluigi.p@variscite.com,
Stefano Radaelli <stefano.r@variscite.com>,
Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
Conor Dooley <conor+dt@kernel.org>,
Sascha Hauer <s.hauer@pengutronix.de>,
Pengutronix Kernel Team <kernel@pengutronix.de>,
Fabio Estevam <festevam@gmail.com>,
Luan Rafael Carneiro <luan.r@variscite.com>
Subject: [PATCH v1 1/2] arm64: dts: imx8mm-var-dart: Enable WM8904 DMIC input
Date: Fri, 16 Oct 2026 10:40:10 +0200 [thread overview]
Message-ID: <5309337578f99886c804c8e4ee82643574f1c19c.1792139809.git.stefano.r@variscite.com> (raw)
In-Reply-To: <cover.1792139809.git.stefano.r@variscite.com>
From: Stefano Radaelli <stefano.r@variscite.com>
The digital microphone data line is connected to the WM8904 IN1L pin,
but this connection is not described in the device tree.
Configure IN1L as DMICDAT1 to enable the digital microphone capture
path.
Co-developed-by: Luan Rafael Carneiro <luan.r@variscite.com>
Signed-off-by: Luan Rafael Carneiro <luan.r@variscite.com>
Signed-off-by: Stefano Radaelli <stefano.r@variscite.com>
---
arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi | 2 ++
1 file changed, 2 insertions(+)
diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
index c5f0e22f549b..183b4f7af009 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi
@@ -300,6 +300,8 @@ wm8904: audio-codec@1a {
/bits/ 16 <0x04af 0x324b 0x0010 0x050e>;
/* GPIO1 = DMIC_CLK, don't touch others */
wlf,gpio-cfg = <0x0018>, <0xffff>, <0xffff>, <0xffff>;
+ /* DMIC is connected to IN1L */
+ wlf,in1l-as-dmicdat1;
};
};
--
2.47.3
next prev parent reply other threads:[~2026-10-16 8:40 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 8:40 [PATCH v1 0/2] arm64: dts: imx8mm: Enable DMIC input on Variscite boards Stefano Radaelli
2026-10-16 8:40 ` Stefano Radaelli [this message]
2026-10-16 8:40 ` [PATCH v1 2/2] arm64: dts: imx8mm-var-som: Enable WM8904 DMIC input Stefano Radaelli
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