Re: [PATCH v2 3/4] soundwire: qcom: add support for mmio soundwire master devices

[Pierre-Louis Bossart]

> @@ -764,8 +786,11 @@ static int qcom_swrm_probe(struct platform_device *pdev)
>   		if (!ctrl->regmap)
>   			return -EINVAL;
>   	} else {
> -		/* Only WCD based SoundWire controller is supported */
> -		return -ENOTSUPP;
> +		ctrl->reg_read = qcom_swrm_cpu_reg_read;
> +		ctrl->reg_write = qcom_swrm_cpu_reg_write;
> +		ctrl->mmio = devm_platform_ioremap_resource(pdev, 0);
> +		if (IS_ERR(ctrl->mmio))
> +			return PTR_ERR(ctrl->mmio);

Shouldn't this be conditional on SLIMBUS being enabled, as done in your 
patch2?

>   	}
>   
>   	ctrl->irq = of_irq_get(dev->of_node, 0);