Re: [PATCH v12 16/19] dt-bindings: clock: imx8m-clock: add PLLs

[Rob Herring <robh@kernel.org>]

On Thu, Apr 24, 2025 at 08:21:46AM +0200, Dario Binacchi wrote:
> Though adding the PLLs to clocks and clock-names properties will break
> the ABI, it is required to accurately describe the hardware. Indeed,
> the Clock Control Module (CCM) receives clocks from the PLLs and
> oscillators and generates clocks for on-chip peripherals.
> 
> Signed-off-by: Dario Binacchi <dario.binacchi@amarulasolutions.com>
> Reviewed-by: Krzysztof Kozlowski <krzysztof.kozlowski@linaro.org>
> 
> ---
> 
> (no changes since v11)
> 
> Changes in v11:
> - Fix conflict while rebasing on master
> 
> Changes in v7:
> - Add 'Reviewed-by' tag of Krzysztof Kozlowski
> 
> Changes in v6:
> - New
> 
>  .../bindings/clock/imx8m-clock.yaml           | 27 ++++++++++++++-----
>  1 file changed, 21 insertions(+), 6 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
> index 4fec55832702..e83f08abd44c 100644
> --- a/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
> +++ b/Documentation/devicetree/bindings/clock/imx8m-clock.yaml
> @@ -29,12 +29,12 @@ properties:
>      maxItems: 2
>  
>    clocks:
> -    minItems: 6
> -    maxItems: 7
> +    minItems: 7

Increasing the minimum entries looks like an ABI break to me. The .dts 
files not being in linux-next confirms that (from 0 warnings in 
mainline):

arch/arm64/boot/dts/freescale:859:50
    122  clock-controller@30380000 (fsl,imx8mm-ccm): clock-names: ['osc_32k', 'osc_24m', 'clk_ext1', 'clk_ext2', 'clk_ext3', 'clk_ext4'] is too short
    120  clock-controller@30380000 (fsl,imx8mp-ccm): clock-names: ['osc_32k', 'osc_24m', 'clk_ext1', 'clk_ext2', 'clk_ext3', 'clk_ext4'] is too short
     61  clock-controller@30360000 (fsl,imx8mm-anatop): 'clocks' is a required property
     61  clock-controller@30360000 (fsl,imx8mm-anatop): 'clock-names' is a required property
     60  clock-controller@30360000 (fsl,imx8mp-anatop): 'clocks' is a required property
     60  clock-controller@30360000 (fsl,imx8mp-anatop): 'clock-names' is a required property
     36  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[35], [36], [37], [38], [39], [40]] is too short
     36  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[24], [25], [26], [27], [28], [29]] is too short
     32  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[34], [35], [36], [37], [38], [39]] is too short
     28  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[22], [23], [24], [25], [26], [27]] is too short
     26  clock-controller@30380000 (fsl,imx8mn-ccm): clock-names: ['osc_32k', 'osc_24m', 'clk_ext1', 'clk_ext2', 'clk_ext3', 'clk_ext4'] is too short
     17  clock-controller@30360000 (fsl,imx8mq-anatop): 'clocks' is a required property
     17  clock-controller@30360000 (fsl,imx8mq-anatop): 'clock-names' is a required property
     14  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[44], [45], [46], [47], [48], [49]] is too short
     14  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[23], [24], [25], [26], [27], [28]] is too short
     13  clock-controller@30360000 (fsl,imx8mn-anatop): 'clocks' is a required property
     13  clock-controller@30360000 (fsl,imx8mn-anatop): 'clock-names' is a required property
     12  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[26], [27], [28], [29], [30], [31]] is too short
     10  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[38], [39], [40], [41], [42], [43]] is too short
      8  clock-controller@30380000 (fsl,imx8mn-ccm): clocks: [[22], [23], [24], [25], [26], [27]] is too short
      8  clock-controller@30380000 (fsl,imx8mn-ccm): clocks: [[20], [21], [22], [23], [24], [25]] is too short
      8  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[34], [35], [36], [37], [38], [39]] is too short
      8  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[28], [29], [30], [31], [32], [33]] is too short
      8  bcrmf@1 (brcm,bcm4329-fmac): $nodename:0: 'bcrmf@1' does not match '^wifi(@.*)?$'
      6  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[41], [42], [43], [44], [45], [46]] is too short
      6  clock-controller@30380000 (fsl,imx8mn-ccm): clocks: [[24], [25], [26], [27], [28], [29]] is too short
      4  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[43], [44], [45], [46], [47], [48]] is too short
      4  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[40], [41], [42], [43], [44], [45]] is too short
      4  clock-controller@30380000 (fsl,imx8mp-ccm): clocks: [[36], [37], [38], [39], [40], [41]] is too short
      4  clock-controller@30380000 (fsl,imx8mm-ccm): clocks: [[35], [36], [37], [38], [39], [40]] is too short

Please fix the binding or drop what's been applied so far.

Rob