linux-kernel - Re: [PATCH v2 7/7] riscv: dts: sophgo: dts nodes for i2s tdm modules

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Message-ID: <aWzUaf7t96FhtbNq@anton.local>
Date: Sun, 18 Jan 2026 16:40:59 +0400
From: "Anton D. Stavinskii" <stavinsky@...il.com>
To: Krzysztof Kozlowski <krzk@...nel.org>
Cc: Liam Girdwood <lgirdwood@...il.com>, Mark Brown <broonie@...nel.org>, 
	Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
	Conor Dooley <conor+dt@...nel.org>, Chen Wang <unicorn_wang@...look.com>, 
	Inochi Amaoto <inochiama@...il.com>, Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>, 
	Paul Walmsley <pjw@...nel.org>, Palmer Dabbelt <palmer@...belt.com>, 
	Albert Ou <aou@...s.berkeley.edu>, Alexandre Ghiti <alex@...ti.fr>, linux-sound@...r.kernel.org, 
	devicetree@...r.kernel.org, sophgo@...ts.linux.dev, linux-kernel@...r.kernel.org, 
	linux-riscv@...ts.infradead.org
Subject: Re: [PATCH v2 7/7] riscv: dts: sophgo: dts nodes for i2s tdm modules

On Sun, Jan 18, 2026 at 11:16:48AM +0400, Krzysztof Kozlowski wrote:
> On Sun, Jan 18, 2026 at 12:18:59AM +0400, Anton D. Stavinskii wrote:
> > Introduced I2S nodes and internal dac and adc nodes as well
> > The new header file provided in order to make DMA channel names
> > more readable.
> > 
> > Signed-off-by: Anton D. Stavinskii <stavinsky@...il.com>
> > ---
> >  arch/riscv/boot/dts/sophgo/cv180x-dmamux.h | 57 +++++++++++++++++++++++++++
> >  arch/riscv/boot/dts/sophgo/cv180x.dtsi     | 63 ++++++++++++++++++++++++++++++
> >  2 files changed, 120 insertions(+)
> > 
> > diff --git a/arch/riscv/boot/dts/sophgo/cv180x-dmamux.h b/arch/riscv/boot/dts/sophgo/cv180x-dmamux.h
> > new file mode 100644
> > index 000000000000..6314bf6e9dc8
> > --- /dev/null
> > +++ b/arch/riscv/boot/dts/sophgo/cv180x-dmamux.h
> > @@ -0,0 +1,57 @@
> > +/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
> > +/*
> > + * Copyright (C) 2025 Inochi Amaoto <inochiama@...il.com>
> > + */
> > +
> > +#ifndef _SOPHGO_CV18XX_DMAMUX
> > +#define _SOPHGO_CV18XX_DMAMUX
> > +
> > +#define DMA_I2S0_RX		0
> > +#define DMA_I2S0_TX		1
> > +#define DMA_I2S1_RX		2
> > +#define DMA_I2S1_TX		3
> > +#define DMA_I2S2_RX		4
> > +#define DMA_I2S2_TX		5
> > +#define DMA_I2S3_RX		6
> > +#define DMA_I2S3_TX		7
> > +#define DMA_UART0_RX	8
> > +#define DMA_UART0_TX	9
> > +#define DMA_UART1_RX	10
> > +#define DMA_UART1_TX	11
> > +#define DMA_UART2_RX	12
> > +#define DMA_UART2_TX	13
> > +#define DMA_UART3_RX	14
> > +#define DMA_UART3_TX	15
> > +#define DMA_SPI0_RX		16
> > +#define DMA_SPI0_TX		17
> > +#define DMA_SPI1_RX		18
> > +#define DMA_SPI1_TX		19
> > +#define DMA_SPI2_RX		20
> > +#define DMA_SPI2_TX		21
> > +#define DMA_SPI3_RX		22
> > +#define DMA_SPI3_TX		23
> > +#define DMA_I2C0_RX		24
> > +#define DMA_I2C0_TX		25
> > +#define DMA_I2C1_RX		26
> > +#define DMA_I2C1_TX		27
> > +#define DMA_I2C2_RX		28
> > +#define DMA_I2C2_TX		29
> > +#define DMA_I2C3_RX		30
> > +#define DMA_I2C3_TX		31
> > +#define DMA_I2C4_RX		32
> > +#define DMA_I2C4_TX		33
> > +#define DMA_TDM0_RX		34
> > +#define DMA_TDM0_TX		35
> > +#define DMA_TDM1_RX		36
> > +#define DMA_AUDSRC		37
> > +#define DMA_SPI_NAND	38
> > +#define DMA_SPI_NOR		39
> > +#define DMA_UART4_RX	40
> > +#define DMA_UART4_TX	41
> > +#define DMA_SPI_NOR1	42
> > +
> > +#define DMA_CPU_A53		0
> > +#define DMA_CPU_C906_0	1
> > +#define DMA_CPU_C906_1	2
> > +
> > +#endif // _SOPHGO_CV18XX_DMAMUX
> > diff --git a/arch/riscv/boot/dts/sophgo/cv180x.dtsi b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> > index 06b0ce5a2db7..5a56951f7e4c 100644
> > --- a/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> > +++ b/arch/riscv/boot/dts/sophgo/cv180x.dtsi
> > @@ -8,6 +8,7 @@
> >  #include <dt-bindings/gpio/gpio.h>
> >  #include <dt-bindings/interrupt-controller/irq.h>
> >  #include "cv18xx-reset.h"
> > +#include "cv180x-dmamux.h"
> >  
> >  / {
> >  	#address-cells = <1>;
> > @@ -448,6 +449,68 @@ usb: usb@...0000 {
> >  			status = "disabled";
> >  		};
> >  
> > +		i2s0: i2s@...0000 {
> > +			compatible = "sophgo,cv1800b-i2s";
> > +			reg = <0x04100000 0x1000>;
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> 
> Really, why are you putting cells everywhere?
My bad. It was misunderstanding from my side. Will drop everywhere it needs to be dropped. Thanks for you
patience. 
> 
> > +			clocks = <&clk CLK_APB_I2S0>, <&clk CLK_SDMA_AUD0>;
> > +			clock-names = "i2s", "mclk";
> > +			dmas = <&dmamux DMA_I2S0_RX 1>, <&dmamux DMA_I2S0_TX 1>;
> > +			dma-names = "rx", "tx";
> > +			status = "disabled";
> > +		};
> > +
> > +		i2s1: i2s@...0000 {
> > +			compatible = "sophgo,cv1800b-i2s";
> > +			reg = <0x04110000 0x1000>;
> > +			#address-cells = <1>;
> > +			#size-cells = <0>;
> 
> 
> Best regards,
> Krzysztof
>