linux-kernel - Re: [PATCH v2] rtc: Add MOXA ART RTC driver

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Date:	Sun, 14 Jul 2013 21:58:43 +0200
From:	Arnd Bergmann <arnd@...db.de>
To:	Jonas Jensen <jonas.jensen@...il.com>
Cc:	rtc-linux@...glegroups.com, a.zummo@...ertech.it,
	linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org,
	arm@...nel.org, broonie@...nel.org
Subject: Re: [PATCH v2] rtc: Add MOXA ART RTC driver

On Thursday 11 July 2013, Jonas Jensen wrote:
> Add RTC driver for MOXA ART SoCs.
> +
> +#define GPIO_EM1240_OUTPUT			1
> +#define GPIO_EM1240_INPUT			0
> +
> +#define GPIO_RTC_SCLK				(5)
> +#define GPIO_RTC_DATA				(6)
> +#define GPIO_RTC_RESET				(7)

Since this is a DT-only platform, you should not really have hardcoded GPIO
numbers.

> +	devm_gpio_request(&pdev->dev, GPIO_RTC_DATA, "rtc_data");
> +	devm_gpio_request(&pdev->dev, GPIO_RTC_SCLK, "rtc_sclk");
> +	devm_gpio_request(&pdev->dev, GPIO_RTC_RESET, "rtc_reset");

Instead, you should use of_get_named_gpio() here, and add a binding document
that describes the names.

	Arnd
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