Re: [PATCH 09/13] mmc: dw_mmc: remove the "clock-freq-min-max" property

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Hi Jaehoon,

Am Donnerstag, 3. November 2016, 15:21:31 schrieb Jaehoon Chung:
> Remove the "clock-freq-min-max" property.
> There is "max-frequency" property in drivers/mmc/core/host.c
> It can be used for getting maximum frequency.
> 
> And minimum clock value is assigned to 100K by default.
> Because MMC core should check the initial clock value from
> 400K to 100K until finding correct value.
> It's why Minimum value puts 100K by default.
> 
> Signed-off-by: Jaehoon Chung <jh80.chung@xxxxxxxxxxx>
> ---
>  Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt |  3 ---
>  drivers/mmc/host/dw_mmc.c                                  | 13
> ++++--------- 2 files changed, 4 insertions(+), 12 deletions(-)
> 
> diff --git a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt index
> 4e00e85..21c8251 100644
> --- a/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> +++ b/Documentation/devicetree/bindings/mmc/synopsys-dw-mshc.txt
> @@ -56,9 +56,6 @@ Optional properties:
>    is specified and the ciu clock is specified then we'll try to set the ciu
> clock to this at probe time.
> 
> -* clock-freq-min-max: Minimum and Maximum clock frequency for card output
> -  clock(cclk_out). If it's not specified, max is 200MHZ and min is 400KHz
> by default. -

I'd think devicetree people will protest about simply removing this property 
without deprecating it first - to be backwards compatible with old devicetrees.

Especially as this property was added already back in 2013, so has been in use 
for quite some time.


Heiko
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