linux-kernel - [PATCH v2 0/2] ASoC: spacemit: add i2s support to K1 SoC

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Message-Id: <20250828-k1-i2s-v2-0-09e7b40f002c@linux.spacemit.com>
Date: Thu, 28 Aug 2025 11:37:31 +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>, 
 Jinmei Wei <weijinmei@...ux.spacemit.com>
Subject: [PATCH v2 0/2] ASoC: spacemit: add i2s support to K1 SoC

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 v2:
- Patch 1/2:
  - modify commit message
  - remove unused third cell from pdma dmas property
  - update SPDX license in spacemit,k1-i2s.yaml to (GPL-2.0-only OR BSD-2-Clause)
- Patch 2/2:
  - modify commit message
  - reset_assert in dai_ops::remove
  - select CMA and DMA_CMA in Kconfig
  - use devm_reset_control_get_exclusive
- Link to v1: https://lore.kernel.org/r/20250814-k1-i2s-v1-0-c31149b29041@linux.spacemit.com

---
Troy Mitchell (2):
      ASoC: dt-bindings: Add bindings for SpacemiT K1
      ASoC: spacemit: add i2s support for K1 SoC

 .../devicetree/bindings/sound/spacemit,k1-i2s.yaml |  88 ++++
 sound/soc/Kconfig                                  |   1 +
 sound/soc/Makefile                                 |   1 +
 sound/soc/spacemit/Kconfig                         |  16 +
 sound/soc/spacemit/Makefile                        |   5 +
 sound/soc/spacemit/k1_i2s.c                        | 452 +++++++++++++++++++++
 6 files changed, 563 insertions(+)
---
base-commit: 8f5ae30d69d7543eee0d70083daf4de8fe15d585
change-id: 20250813-k1-i2s-115bf65eaac8
prerequisite-change-id: 20250804-k1-clk-i2s-generation-eee7049ee17a:v4
prerequisite-patch-id: b46d4007c5b20f11845db739fc78ffccc54f4dab
prerequisite-patch-id: 1e193c412de1206c024a674e2dd7da88092976b9
prerequisite-patch-id: af07a4bca4109b13a74c0b20a12f96af863090ef
prerequisite-change-id: 20250701-working_dma_0701_v2-7d2cf506aad7:v5
prerequisite-patch-id: 3fe97698036c32c20d03b1b835a5735e8ee8126c
prerequisite-patch-id: bf64cb2fbb9699d2ace64ae517532f13c6f8d277
prerequisite-patch-id: 49263c65c84a0b045f9b5ae6831dc011c4dea52f
prerequisite-patch-id: 2b43599bf7568e6432faa2f6aca5b2db792cd1c1
prerequisite-patch-id: 1b840918a99543f4497b6475ee52977bdb59f1c3
prerequisite-patch-id: 2f77be523fd5423bd011e3081a3635d130410096
prerequisite-patch-id: 78bcc660796fc4f73b884d17a1b63e62f99dfdd0
prerequisite-patch-id: 62d0b3678cf825bca51424ad85cf35ebdd6dc171
prerequisite-message-id: <20250824-k1-clk-i2s-v5-0-217b6b7cea06@...ux.spacemit.com>
prerequisite-patch-id: 6f2626811da4833395f52f712d9f2a5fb553cb48
prerequisite-patch-id: d2594982f7a8f39c2aa4f21490a19e93ab67254d

Best regards,
-- 
Troy Mitchell <troy.mitchell@...ux.spacemit.com>