linux-kernel - Re: [PATCH v5 0/2] ASoC: spacemit: add i2s support to K1 SoC

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Message-ID: <A22605E3906E8F62+aPG50wdFlFzSMORA@kernel.org>
Date: Fri, 17 Oct 2025 11:36:51 +0800
From: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
To: 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>, Yixun Lan <dlan@...too.org>,
	Jaroslav Kysela <perex@...ex.cz>, Takashi Iwai <tiwai@...e.com>,
	Philipp Zabel <p.zabel@...gutronix.de>
Cc: linux-sound@...r.kernel.org, devicetree@...r.kernel.org,
	linux-riscv@...ts.infradead.org, spacemit@...ts.linux.dev,
	linux-kernel@...r.kernel.org,
	Troy Mitchell <troy.mitchell@...ux.spacemit.com>,
	Krzysztof Kozlowski <krzysztof.kozlowski@...aro.org>,
	Jinmei Wei <weijinmei@...ux.spacemit.com>
Subject: Re: [PATCH v5 0/2] ASoC: spacemit: add i2s support to K1 SoC

On Fri, Oct 17, 2025 at 11:16:16AM +0800, Troy Mitchell wrote:
> On the K1 SoC, there is a full-duplex I2S controller.
> 
> The I2S is programmable, with the sample width configurable
> to 8, 16, 18, or 32 bits.
> 
> A dedicated FIFO is provided for transmit (TXFIFO) and another
> for receive (RXFIFO). In non-packed mode, both FIFOs are 32
> entries deep and 32 bits wide, giving a total of 32 samples each.
> 
> The register definitions can be found here[1]
> 
> Link:
> https://developer.spacemit.com/documentation?token=Rn9Kw3iFHirAMgkIpTAcV2Arnkf#18.2-spi%2Fi2s [1]
> 
> Signed-off-by: Troy Mitchell <troy.mitchell@...ux.spacemit.com>
> ---
> Changes in v5:
> - Patch 1/2:
>   - nothing
> - Patch 2/2:
>   - dont't read sspsp value in spacemit_i2s_init()
>   - set SSPSP_FSRT bit for DSP_A mode (was missing in previous version)
The changelog here is wrong..
Correct version:
    - do not set SSPSP_FSRT for DSP_B

Best regards,
Troy
> - Link to v4: https://lore.kernel.org/all/20250921-k1-i2s-v4-0-4f819f50e468@linux.spacemit.com/
>