Re: [PATCH 4/4] ARM: dts: keystone-k2hk: add dsp gpio controllers nodes

[Alexander Shiyan]

Wed, 13 Aug 2014 19:16:22 +0300 от Grygorii Strashko <grygorii.strashko at ti.com>:
> Add Keystone 2 DSP GPIO nodes.
> DSP GPIO banks 0-7 correspond to DSP0-DSP7
> 
> Signed-off-by: Grygorii Strashko <grygorii.strashko at ti.com>
> ---
>  arch/arm/boot/dts/k2hk.dtsi |   56 +++++++++++++++++++++++++++++++++++++++++++
>  1 file changed, 56 insertions(+)
> 
> diff --git a/arch/arm/boot/dts/k2hk.dtsi b/arch/arm/boot/dts/k2hk.dtsi
> index 321ba2f..009e180 100644
> --- a/arch/arm/boot/dts/k2hk.dtsi
> +++ b/arch/arm/boot/dts/k2hk.dtsi
> @@ -50,5 +50,61 @@
>  			#interrupt-cells = <1>;
>  			ti,syscon-dev = <&devctrl 0x2a0>;
>  		};
> +
> +		dspgpio0: keystone_dsp_gpio at 02620240 {
> +			compatible = "ti,keystone-mctrl-gpio";
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio,syscon-dev = <&devctrl 0x240>;
> +		};
> +
> +		dspgpio1: keystone_dsp_gpio at 2620244 {
> +			compatible = "ti,keystone-mctrl-gpio";
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio,syscon-dev = <&devctrl 0x244>;
> +		};
...
> +		dspgpio7: keystone_dsp_gpio at 262025C {
> +			compatible = "ti,keystone-mctrl-gpio";
> +			gpio-controller;
> +			#gpio-cells = <2>;
> +			gpio,syscon-dev = <&devctrl 0x25c>;
> +		};

So, devctrl is a syscon device and this DTS introduce several
identical GPIO descriptions?

On my opinion this should be placed in the gpio-syscon.c,
where you can add support for ti,keystone-dsp0{..7}-gpio.
Such change will avoid parts 2 and 3 of this patch.

static const struct syscon_gpio_data ti_keystone_dsp0_gpio = {
  .compatible = "ti,keystone-syscon",
  .dat_bit_offset = 0x240 * 8,
  ...
  .set = etc...
};

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