linux-kernel - Re: [PATCH 1/2 v2] i2c: exynos5: add support for HSI2C on Exynos5260 SoC

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Message-ID: <CAK9yfHz1HL65megQ9vDZovZr9oBo8UsrgGS+umWiT9FmHrnK3Q@mail.gmail.com>
Date:	Tue, 26 Nov 2013 16:59:42 +0530
From:	Sachin Kamat <sachin.kamat@...aro.org>
To:	Naveen Krishna Chatradhi <ch.naveen@...sung.com>
Cc:	linux-i2c@...r.kernel.org, sjg@...omium.org,
	LKML <linux-kernel@...r.kernel.org>,
	linux-samsung-soc <linux-samsung-soc@...r.kernel.org>,
	Wolfram Sang <wsa@...-dreams.de>,
	Ben Dooks <ben-linux@...ff.org>,
	Grant Likely <grant.likely@...retlab.ca>,
	Mark Brown <broonie@...nel.org>,
	Doug Anderson <dianders@...omium.org>, cpgs@...sung.com,
	Tomasz Figa <t.figa@...sung.com>
Subject: Re: [PATCH 1/2 v2] i2c: exynos5: add support for HSI2C on Exynos5260 SoC

On 26 November 2013 09:56, Naveen Krishna Chatradhi
<ch.naveen@...sung.com> wrote:
> This patch adds new compatible to support HSI2C module on Exynos5260
> HSI2C module on Exynos5260 needs to be reset during during initialization.
>
> Signed-off-by: Naveen Krishna Chatradhi <ch.naveen@...sung.com>
[snip]
>
>  Required properties:
>    - compatible: value should be.
> -      -> "samsung,exynos5-hsi2c", for i2c compatible with exynos5 hsi2c.
> +       -> "samsung,exynos5-hsi2c", for i2c compatible with HSI2C available on
> +                               Exynos5250/5420 SoCs.

This string could be made more specific ("samsung,exynos5250-hsi2c")
now that we have variants for this.

> +       -> "samsung,exynos5260-hsi2c", for i2c compatible with HSI2C available
> +                               on Exynos5260 SoCs.
> +
>    - reg: physical base address of the controller and length of memory mapped
>      region.
>    - interrupts: interrupt number to the cpu.
> diff --git a/drivers/i2c/busses/i2c-exynos5.c b/drivers/i2c/busses/i2c-exynos5.c
> index da39ff0..497ff91 100644
> --- a/drivers/i2c/busses/i2c-exynos5.c
> +++ b/drivers/i2c/busses/i2c-exynos5.c
> @@ -184,14 +184,35 @@ struct exynos5_i2c {
>          * 2. Fast speed upto 1Mbps
>          */
>         int                     speed_mode;
> +
> +       /* Version of HS-I2C Hardware */
> +       unsigned int            version;
> +};
> +
> +enum hsi2c_version {
> +       EXYNOS_5,

ditto.

> +       EXYNOS_5260
>  };
>

-- 
With warm regards,
Sachin
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