Subject: Re: [PATCH v6 1/8] dt-bindings: rockchip-sfc: Bindings for Rockchip serial flash controller

From: Rob Herring <[email-masked]>
Date: Tue, 08 Jun 2021 15:50:56 -0500

On Tue, 08 Jun 2021 10:26:37 +0800, Jon Lin wrote:
> From: Chris Morgan <[email-masked]>
> 
> Add bindings for the Rockchip serial flash controller. New device
> specific parameter of rockchip,sfc-no-dma included in documentation.
> 
> Signed-off-by: Chris Morgan <[email-masked]>
> Signed-off-by: Jon Lin <[email-masked]>
> ---
> 
> 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 ([email-masked]) 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.
> 
>  .../devicetree/bindings/spi/rockchip-sfc.yaml | 87 +++++++++++++++++++
>  1 file changed, 87 insertions(+)
>  create mode 100644 Documentation/devicetree/bindings/spi/rockchip-sfc.yaml
> 

My bot found errors running 'make DT_CHECKER_FLAGS=-m dt_binding_check'
on your patch (DT_CHECKER_FLAGS is new in v5.13):

yamllint warnings/errors:

dtschema/dtc warnings/errors:
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/spi/rockchip-sfc.example.dt.yaml: spi@ff3a0000: clock-names:0: 'hclk_sfc' was expected
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/spi/rockchip-sfc.yaml
/builds/robherring/linux-dt-review/Documentation/devicetree/bindings/spi/rockchip-sfc.example.dt.yaml: spi@ff3a0000: clock-names:1: 'clk_sfc' was expected
	From schema: /builds/robherring/linux-dt-review/Documentation/devicetree/bindings/spi/rockchip-sfc.yaml
\ndoc reference errors (make refcheckdocs):

See https://patchwork.ozlabs.org/patch/1489062

This check can fail if there are any dependencies. The base for a patch
series is generally the most recent rc1.

If you already ran 'make dt_binding_check' and didn't see the above
error(s), then make sure 'yamllint' is installed and dt-schema is up to
date:

pip3 install dtschema --upgrade

Please check and re-submit.

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