linux-kernel - Re: [PATCH 4/6] pwm: sun4i: Add support for H6 PWM

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Date:   Mon, 29 Jul 2019 08:40:30 +0200
From:   Uwe Kleine-König 
        <u.kleine-koenig@...gutronix.de>
To:     Jernej Skrabec <jernej.skrabec@...l.net>
Cc:     thierry.reding@...il.com, mripard@...nel.org, wens@...e.org,
        robh+dt@...nel.org, mark.rutland@....com,
        linux-pwm@...r.kernel.org, devicetree@...r.kernel.org,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
        linux-sunxi@...glegroups.com, kernel@...gutronix.de
Subject: Re: [PATCH 4/6] pwm: sun4i: Add support for H6 PWM

On Fri, Jul 26, 2019 at 08:40:43PM +0200, Jernej Skrabec wrote:
> Now that sun4i PWM driver supports deasserting reset line and enabling
> bus clock, support for H6 PWM can be added.
> 
> Note that while H6 PWM has two channels, only first one is wired to
> output pin. Second channel is used as a clock source to companion AC200
> chip which is bundled into same package.
> 
> Signed-off-by: Jernej Skrabec <jernej.skrabec@...l.net>
> ---
>  drivers/pwm/pwm-sun4i.c | 10 ++++++++++
>  1 file changed, 10 insertions(+)
> 
> diff --git a/drivers/pwm/pwm-sun4i.c b/drivers/pwm/pwm-sun4i.c
> index 7d3ac3f2dc3f..9e0eca79ff88 100644
> --- a/drivers/pwm/pwm-sun4i.c
> +++ b/drivers/pwm/pwm-sun4i.c
> @@ -331,6 +331,13 @@ static const struct sun4i_pwm_data sun4i_pwm_single_bypass = {
>  	.npwm = 1,
>  };
>  
> +static const struct sun4i_pwm_data sun50i_pwm_dual_bypass_clk_rst = {
> +	.has_bus_clock = true,
> +	.has_prescaler_bypass = true,
> +	.has_reset = true,
> +	.npwm = 2,
> +};
> +
>  static const struct of_device_id sun4i_pwm_dt_ids[] = {
>  	{
>  		.compatible = "allwinner,sun4i-a10-pwm",
> @@ -347,6 +354,9 @@ static const struct of_device_id sun4i_pwm_dt_ids[] = {
>  	}, {
>  		.compatible = "allwinner,sun8i-h3-pwm",
>  		.data = &sun4i_pwm_single_bypass,
> +	}, {
> +		.compatible = "allwinner,sun50i-h6-pwm",
> +		.data = &sun50i_pwm_dual_bypass_clk_rst,

If you follow my suggestion for the two previous patches, you can just
use:

	compatible = "allwinner,sun50i-h6-pwm", "allwinner,sun5i-a10s-pwm";

and drop this patch.

Best regards
Uwe

>  	}, {
>  		/* sentinel */
>  	},
> -- 
> 2.22.0
> 
> 

-- 
Pengutronix e.K.                           | Uwe Kleine-König            |
Industrial Linux Solutions                 | http://www.pengutronix.de/  |