linux-kernel - [PATCH v2 0/9] spi: enable the SpacemiT K1 SoC QSPI

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Message-ID: <20251023175922.528868-1-elder@riscstar.com>
Date: Thu, 23 Oct 2025 12:59:12 -0500
From: Alex Elder <elder@...cstar.com>
To: robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	han.xu@....com,
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Cc: Frank.li@....com,
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Subject: [PATCH v2 0/9] spi: enable the SpacemiT K1 SoC QSPI

This series adds support for the SpacemiT K1 SoC QSPI.  This IP
is generally compatible with the Freescale QSPI driver, requiring
three minor changes to enable it to be supported.  The changes
are:
  - Adding support for optional resets
  - Having the clock *not* be disabled when changing its rate
  - Allowing the size of storage blocks written to flash chips
    to be set to something different from the AHB buffer size

    					-Alex

This series is available here:
  https://github.com/riscstar/linux/tree/outgoing/qspi-v2
  
Version 2 addresses comments recieved during review of v1:
- The "reset" property now only applies to spacemit,k1-qspi compatible.
- Patch 1 (previously patch 2) now points out that this is the first
  non-Freescale device using the binding.
- Added Frank Li's Reviewed-by on patch 3.
- A quirk flag has been renamed to be QUADSPI_QUIRK_SKIP_CLK_DISABLE.
- The predicate for that quirk now returns bool type.
- All other similar predicates now return bool type; this is done in a new
  patch (patch 4).
- If non-zero, new field fsl_qspi_devtype_data->sfa_size defines the
  size of the serial flash regions, rather than ahb_buf_size.
- A continued line in the Kconfig is now aligned.
- Patch descriptions are wrapped at 75 columns.

Alex Elder (9):
  dt-bindings: spi: fsl-qspi: support SpacemiT K1
  dt-bindings: spi: fsl-qspi: add optional resets
  spi: fsl-qspi: add optional reset support
  spi: fsl-qspi: switch predicates to bool
  spi: fsl-qspi: add a clock disable quirk
  spi: fsl-qspi: allot 1KB per chip
  spi: fsl-qspi: support the SpacemiT K1 SoC
  riscv: dts: spacemit: enable K1 SoC QSPI on BPI-F3
  riscv: defconfig: enable SPI_FSL_QUADSPI as a module

 .../bindings/spi/fsl,spi-fsl-qspi.yaml        | 16 ++++
 .../boot/dts/spacemit/k1-bananapi-f3.dts      |  6 ++
 arch/riscv/boot/dts/spacemit/k1-pinctrl.dtsi  | 21 +++++
 arch/riscv/boot/dts/spacemit/k1.dtsi          | 16 ++++
 arch/riscv/configs/defconfig                  |  1 +
 drivers/spi/Kconfig                           |  3 +-
 drivers/spi/spi-fsl-qspi.c                    | 87 +++++++++++++------
 7 files changed, 124 insertions(+), 26 deletions(-)


base-commit: efb26a23ed5f5dc3554886ab398f559dcb1de96b
-- 
2.43.0