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[v13,0/6] Add Rockchip SFC(serial flash controller) support

Message ID 20210812134546.31340-1-jon.lin@rock-chips.com
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Series Add Rockchip SFC(serial flash controller) support | expand

Message

Jon Lin Aug. 12, 2021, 1:45 p.m. UTC
Changes in v13:
- Provide independent interfaces to obtain RX TX FIFO status respectively
- Add more debug information
- Depress DMA limitation

Changes in v12:
- Remove useless oneOf lable
- Add sfc controller discription
- Remove the limitation of SFC_MIN_SPEED_HZ
- Add IRQ_NONE method for irq handler
- Add SPI_MASTER_HALF_DUPLEX flags
- Add sfc interrupt mask bits and status register initial progress

Changes in v11:
- The tx is set to 1 for Odroid Go Advance device

Changes in v10:
- Fix dma transfer logic

Changes in v9:
- Separate DMA IRQ setting and wait_completion from DMA fifo transfer
  function to make dma_status_poll be possible(Which I will implement
  in u-boot)
- Add SFC Kconfig detail comment

Changes in v8:
- Fix indent 4 to 2 in yaml

Changes in v7:
- Fix up the sclk_sfc parent error in rk3036
- Unify to "rockchip,sfc" compatible id because all the feature update
  will have a new IP version, so the driver is used for the SFC IP in
  all SoCs
- Change to use node "sfc" to name the SFC pinctrl group
- Add subnode reg property check
- Add rockchip_sfc_adjust_op_size to workaround in CMD + DUMMY case
- Limit max_iosize to 32KB

Changes in v6:
- Add support in device trees for rv1126(Declared in series 5 but not
  submitted)
- Change to use "clk_sfc" "hclk_sfc" as clock lable, since it does not
  affect interpretation and has been widely used
- Support sfc tx_dual, tx_quad(Declared in series 5 but not submitted)
- Simplify the code, such as remove "rockchip_sfc_register_all"(Declared
  in series 5 but not submitted)
- Support SFC ver4 ver5(Declared in series 5 but not submitted)
- Add author Chris Morgan and Jon Lin to spi-rockchip-sfc.c
- Change to use devm_spi_alloc_master and spi_unregister_master

Changes in v5:
- Add support in device trees for rv1126
- Support sfc tx_dual, tx_quad
- Simplify the code, such as remove "rockchip_sfc_register_all"
- Support SFC ver4 ver5

Changes in v4:
- Changing patch back to an "RFC". An engineer from Rockchip
  reached out to me to let me know they are working on this patch for
  upstream, I am submitting this v4 for the community to see however
  I expect Jon Lin (jon.lin@rock-chips.com) will submit new patches
  soon and these are the ones we should pursue for mainlining. Jon's
  patch series should include support for more hardware than this
  series.
- Clean up documentation more and ensure it is correct per
  make dt_binding_check.
- Add support in device trees for rk3036, rk3308, and rv1108.
- Add ahb clock (hclk_sfc) support for rk3036.
- Change rockchip_sfc_wait_fifo_ready() to use a switch statement.
- Change IRQ code to only mark IRQ as handled if it handles the
  specific IRQ (DMA transfer finish) it is supposed to handle.

Changes in v3:
- Changed the name of the clocks to sfc/ahb (from clk-sfc/clk-hsfc).
- Changed the compatible string from rockchip,sfc to
  rockchip,rk3036-sfc. A quick glance at the datasheets suggests this
  driver should work for the PX30, RK180x, RK3036, RK312x, RK3308 and
  RV1108 SoCs, and possibly more. However, I am currently only able
  to test this on a PX30 (an RK3326). The technical reference manuals
  appear to list the same registers for each device.
- Corrected devicetree documentation for formatting and to note these
  changes.
- Replaced the maintainer with Heiko Stuebner and myself, as we will
  take ownership of this going forward.
- Noted that the device (per the reference manual) supports 4 CS, but
  I am only able to test a single CS (CS 0).
- Reordered patches to comply with upstream rules.

Changes in v2:
- Reimplemented driver using spi-mem subsystem.
- Removed power management code as I couldn't get it working properly.
- Added device tree bindings for Odroid Go Advance.

Changes in v1:
hanges made in this new series versus the v8 of the old series:
- Added function to read spi-rx-bus-width from device tree, in the
  event that the SPI chip supports 4x mode but only has 2 pins
  wired (such as the Odroid Go Advance).
- Changed device tree documentation from txt to yaml format.
- Made "reset" message a dev_dbg from a dev_info.
- Changed read and write fifo functions to remove redundant checks.
- Changed the write and read from relaxed to non-relaxed when
  starting the DMA transfer or reading the DMA IRQ.
- Changed from dma_coerce_mask_and_coherent to just
  dma_set_mask_and_coherent.
- Changed name of get_if_type to rockchip_sfc_get_if_type.

Chris Morgan (6):
  dt-bindings: rockchip-sfc: Bindings for Rockchip serial flash
    controller
  spi: rockchip-sfc: add rockchip serial flash controller
  arm64: dts: rockchip: Add SFC to PX30
  arm: dts: rockchip: Add SFC to RV1108
  arm64: dts: rockchip: Add SFC to RK3308
  arm64: dts: rockchip: Enable SFC for Odroid Go Advance

 .../devicetree/bindings/spi/rockchip-sfc.yaml |  91 +++
 arch/arm/boot/dts/rv1108.dtsi                 |  37 +
 arch/arm64/boot/dts/rockchip/px30.dtsi        |  38 +
 arch/arm64/boot/dts/rockchip/rk3308.dtsi      |  37 +
 .../boot/dts/rockchip/rk3326-odroid-go2.dts   |  16 +
 drivers/spi/Kconfig                           |  12 +
 drivers/spi/Makefile                          |   1 +
 drivers/spi/spi-rockchip-sfc.c                | 694 ++++++++++++++++++
 8 files changed, 926 insertions(+)
 create mode 100644 Documentation/devicetree/bindings/spi/rockchip-sfc.yaml
 create mode 100644 drivers/spi/spi-rockchip-sfc.c

Comments

Mark Brown Aug. 17, 2021, 2:22 p.m. UTC | #1
On Thu, 12 Aug 2021 21:45:40 +0800, Jon Lin wrote:
> Changes in v13:
> - Provide independent interfaces to obtain RX TX FIFO status respectively
> - Add more debug information
> - Depress DMA limitation
> 
> Changes in v12:
> - Remove useless oneOf lable
> - Add sfc controller discription
> - Remove the limitation of SFC_MIN_SPEED_HZ
> - Add IRQ_NONE method for irq handler
> - Add SPI_MASTER_HALF_DUPLEX flags
> - Add sfc interrupt mask bits and status register initial progress
> 
> [...]

Applied to

   https://git.kernel.org/pub/scm/linux/kernel/git/broonie/spi.git for-next

Thanks!

[1/6] dt-bindings: rockchip-sfc: Bindings for Rockchip serial flash controller
      commit: 538d7c2ed73098850fe80be14eed2739d37e419b
[2/6] spi: rockchip-sfc: add rockchip serial flash controller
      commit: 0b89fc0a367edab09065af722894d186bd0ccb0d

All being well this means that it will be integrated into the linux-next
tree (usually sometime in the next 24 hours) and sent to Linus during
the next merge window (or sooner if it is a bug fix), however if
problems are discovered then the patch may be dropped or reverted.

You may get further e-mails resulting from automated or manual testing
and review of the tree, please engage with people reporting problems and
send followup patches addressing any issues that are reported if needed.

If any updates are required or you are submitting further changes they
should be sent as incremental updates against current git, existing
patches will not be replaced.

Please add any relevant lists and maintainers to the CCs when replying
to this mail.

Thanks,
Mark
Heiko Stuebner Aug. 18, 2021, 10:14 p.m. UTC | #2
On Thu, 12 Aug 2021 21:45:40 +0800, Jon Lin wrote:
> Changes in v13:
> - Provide independent interfaces to obtain RX TX FIFO status respectively
> - Add more debug information
> - Depress DMA limitation
> 
> Changes in v12:
> - Remove useless oneOf lable
> - Add sfc controller discription
> - Remove the limitation of SFC_MIN_SPEED_HZ
> - Add IRQ_NONE method for irq handler
> - Add SPI_MASTER_HALF_DUPLEX flags
> - Add sfc interrupt mask bits and status register initial progress
> 
> [...]

Applied, thanks!

[3/6] arm64: dts: rockchip: Add SFC to PX30
      commit: c68defec1585819af54f011fa4d47892b38fb74a
[4/6] arm: dts: rockchip: Add SFC to RV1108
      commit: 9d508827c7939242e8ed6b06f66aa87d9f7ea832
[5/6] arm64: dts: rockchip: Add SFC to RK3308
      commit: ab438ba2dc6b7bd3dce8e3c8b0f131905cd133d9
[6/6] arm64: dts: rockchip: Enable SFC for Odroid Go Advance
      commit: f9576999b0aef399e7cb1065787032d42198c362

Best regards,