linux-kernel - Re: [PATCH v3 2/4] rtc: rtc-pm8xxx: Add support for pm8018 rtc

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Date:	Thu, 4 Aug 2016 14:58:09 -0700
From:	Stephen Boyd <sboyd@...eaurora.org>
To:	Neil Armstrong <narmstrong@...libre.com>, andy.gross@...aro.org,
	david.brown@...aro.org, lee.jones@...aro.org, lgirdwood@...il.com,
	broonie@...nel.org, a.zummo@...ertech.it,
	alexandre.belloni@...e-electrons.com
Cc:	linux-input@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-arm-msm@...r.kernel.org, linux-soc@...r.kernel.org,
	rtc-linux@...glegroups.com
Subject: Re: [PATCH v3 2/4] rtc: rtc-pm8xxx: Add support for pm8018 rtc

On 07/19/2016 06:51 AM, Neil Armstrong wrote:
> diff --git a/drivers/rtc/rtc-pm8xxx.c b/drivers/rtc/rtc-pm8xxx.c
> index 795fcbd..976f5f6 100644
> --- a/drivers/rtc/rtc-pm8xxx.c
> +++ b/drivers/rtc/rtc-pm8xxx.c
> @@ -393,6 +393,16 @@ static int pm8xxx_rtc_enable(struct pm8xxx_rtc *rtc_dd)
>  	return 0;
>  }
>  
> +static const struct pm8xxx_rtc_regs pm8018_regs = {
> +	.ctrl		= 0x11d,
> +	.write		= 0x11f,
> +	.read		= 0x123,
> +	.alarm_rw	= 0x127,
> +	.alarm_ctrl	= 0x11d,
> +	.alarm_ctrl2	= 0x11e,
> +	.alarm_en	= BIT(1),
> +};

This is the same as pm8921_regs, so why do we need to duplicate it?
Can't we point the new compatible at the same data?

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