[PATCH v1 0/2] arm64: dts: imx8mm: Enable DMIC input on Variscite boards

[PATCH v1 0/2] arm64: dts: imx8mm: Enable DMIC input on Variscite boards

[Stefano Radaelli]

This series describes the digital microphone connection to the WM8904
codec on the Variscite DART-MX8M-MINI and VAR-SOM-MX8M-MINI platforms.

Configure IN1L as DMICDAT1 on both platforms to enable the digital
microphone capture path.

Stefano Radaelli (2):
  arm64: dts: imx8mm-var-dart: Enable WM8904 DMIC input
  arm64: dts: imx8mm-var-som: Enable WM8904 DMIC input

 arch/arm64/boot/dts/freescale/imx8mm-var-dart.dtsi | 2 ++
 arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi  | 2 ++
 2 files changed, 4 insertions(+)


base-commit: 31f9ec9f38735f42e1f0ba57347c420e56b99824
-- 
2.47.3

[PATCH v1 1/2] arm64: dts: imx8mm-var-dart: Enable WM8904 DMIC input

[Stefano Radaelli]

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

[PATCH v1 2/2] arm64: dts: imx8mm-var-som: Enable WM8904 DMIC input

[Stefano Radaelli]

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-som.dtsi | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
index d05b1ab17fed..514cc568fb71 100644
--- a/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
+++ b/arch/arm64/boot/dts/freescale/imx8mm-var-som.dtsi
@@ -348,6 +348,8 @@ wm8904: 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

Re: [PATCH v1 0/2] arm64: dts: imx8mm: Enable DMIC input on Variscite boards

[Frank.Li]

From: Frank Li <Frank.Li@nxp.com>


On Fri, 16 Oct 2026 10:40:09 +0200, Stefano Radaelli wrote:
> This series describes the digital microphone connection to the WM8904
> codec on the Variscite DART-MX8M-MINI and VAR-SOM-MX8M-MINI platforms.
>
> Configure IN1L as DMICDAT1 on both platforms to enable the digital
> microphone capture path.
>
> Stefano Radaelli (2):
>   arm64: dts: imx8mm-var-dart: Enable WM8904 DMIC input
>   arm64: dts: imx8mm-var-som: Enable WM8904 DMIC input
>
> [...]

Applied to imx/dt64-intend (will appear to linux-next after v7.4-rc1),
thanks!

[1/2] arm64: dts: imx8mm-var-dart: Enable WM8904 DMIC input
      commit: 98bb62f6426fe83d1d9ad1b0a8a689d2babfbcee
[2/2] arm64: dts: imx8mm-var-som: Enable WM8904 DMIC input
      commit: 5391f84729fb68a5b0e3180e4fbf9d64282fd036

Best regards,
--
Frank Li <Frank.Li@nxp.com>