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Date: Wed, 28 Oct 2020 07:10:37 -0500 From: Adam Ford <aford173@...il.com> To: Shawn Guo <shawnguo@...nel.org> Cc: arm-soc <linux-arm-kernel@...ts.infradead.org>, aford@...conemedded.com, Rob Herring <robh+dt@...nel.org>, Sascha Hauer <s.hauer@...gutronix.de>, Pengutronix Kernel Team <kernel@...gutronix.de>, Fabio Estevam <festevam@...il.com>, NXP Linux Team <linux-imx@....com>, Catalin Marinas <catalin.marinas@....com>, Will Deacon <will@...nel.org>, devicetree <devicetree@...r.kernel.org>, Linux Kernel Mailing List <linux-kernel@...r.kernel.org> Subject: Re: [PATCH] arm64: dts: imx8mm: Add support for micfil On Tue, May 19, 2020 at 8:03 PM Shawn Guo <shawnguo@...nel.org> wrote: > > On Sat, May 02, 2020 at 07:59:48AM -0500, Adam Ford wrote: > > The i.MX8M Mini has supports the MICFIL digital interface. > > It's a 16-bit audio signal from a PDM microphone bitstream. > > The driver is already in the kernel, but the node is missing. > > > > This patch adds the micfil node. > > > > Signed-off-by: Adam Ford <aford173@...il.com> > > > > diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > > index c63685ae80ee..d46e727fc362 100644 > > --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi > > +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi > > @@ -339,6 +339,25 @@ sai6: sai@...60000 { > > status = "disabled"; > > }; > > > > + micfil: micfil@...80000 { > > Find a generic node name, audio-controller maybe? The SAI's nodes are called SAI@...x If that's a deal-breaker, I can push a V3. I didn't see anyone from the device tree side comment, and the device tree binding doc states 'micfil@...xxx' so I used what was documented in the fsl,micfil.txt adam > > Shawn > > > + compatible = "fsl,imx8mm-micfil"; > > + reg = <0x30080000 0x10000>; > > + interrupts = <GIC_SPI 109 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 110 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 44 IRQ_TYPE_LEVEL_HIGH>, > > + <GIC_SPI 45 IRQ_TYPE_LEVEL_HIGH>; > > + clocks = <&clk IMX8MM_CLK_PDM_IPG>, > > + <&clk IMX8MM_CLK_PDM_ROOT>, > > + <&clk IMX8MM_AUDIO_PLL1_OUT>, > > + <&clk IMX8MM_AUDIO_PLL2_OUT>, > > + <&clk IMX8MM_CLK_EXT3>; > > + clock-names = "ipg_clk", "ipg_clk_app", > > + "pll8k", "pll11k", "clkext3"; > > + dmas = <&sdma2 24 25 0x80000000>; > > + dma-names = "rx"; > > + status = "disabled"; > > + }; > > + > > gpio1: gpio@...00000 { > > compatible = "fsl,imx8mm-gpio", "fsl,imx35-gpio"; > > reg = <0x30200000 0x10000>; > > -- > > 2.25.1 > >
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