linux-kernel - Re: [PATCH v2 4/6] bus: ti-sysc: Add support for using ti-sysc for MCAN on dra76x

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Date:   Wed, 30 May 2018 07:57:26 -0700
From:   Tony Lindgren <tony@...mide.com>
To:     Faiz Abbas <faiz_abbas@...com>
Cc:     linux-kernel@...r.kernel.org, devicetree@...r.kernel.org,
        linux-omap@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
        linux-clk@...r.kernel.org, robh+dt@...nel.org,
        bcousson@...libre.com, paul@...an.com, t-kristo@...com
Subject: Re: [PATCH v2 4/6] bus: ti-sysc: Add support for using ti-sysc for
 MCAN on dra76x

* Faiz Abbas <faiz_abbas@...com> [180530 14:12]:
> The dra76x MCAN generic interconnect module has a its own
> format for the bits in the control registers.
...
> --- a/drivers/bus/ti-sysc.c
> +++ b/drivers/bus/ti-sysc.c
> @@ -1262,6 +1262,22 @@ static const struct sysc_capabilities sysc_omap4_usb_host_fs = {
>  	.regbits = &sysc_regbits_omap4_usb_host_fs,
>  };
>  
> +static const struct sysc_regbits sysc_regbits_dra7_mcan = {
> +	.dmadisable_shift = -ENODEV,
> +	.midle_shift = -ENODEV,
> +	.sidle_shift = -ENODEV,
> +	.clkact_shift = -ENODEV,
> +	.enwkup_shift = 4,
> +	.srst_shift = 0,
> +	.emufree_shift = -ENODEV,
> +	.autoidle_shift = -ENODEV,
> +};
> +
> +static const struct sysc_capabilities sysc_dra7_mcan = {
> +	.type = TI_SYSC_DRA7_MCAN,
> +	.regbits = &sysc_regbits_dra7_mcan,
> +};
> +
>  static int sysc_init_pdata(struct sysc *ddata)
>  {
>  	struct ti_sysc_platform_data *pdata = dev_get_platdata(ddata->dev);
> @@ -1441,6 +1457,7 @@ static const struct of_device_id sysc_match[] = {
>  	{ .compatible = "ti,sysc-mcasp", .data = &sysc_omap4_mcasp, },
>  	{ .compatible = "ti,sysc-usb-host-fs",
>  	  .data = &sysc_omap4_usb_host_fs, },
> +	{ .compatible = "ti,sysc-dra7-mcan", .data = &sysc_dra7_mcan, },
>  	{  },
>  };

Looks good to me. And presumably you checked that no other dra7 modules
use sysconfig register bit layout like this?

Regards,

Tony