From mboxrd@z Thu Jan  1 00:00:00 1970
From: robert.jarzmik@free.fr (Robert Jarzmik)
Date: Fri, 29 May 2015 22:22:27 +0200
Subject: [PATCH 04/12] i2c: pxa: Add support for pxa910/988 & new
 configuration features
In-Reply-To: <1432818224-17070-5-git-send-email-vaibhav.hiremath@linaro.org>
 (Vaibhav Hiremath's message of "Thu, 28 May 2015 18:33:36 +0530")
References: <1432818224-17070-1-git-send-email-vaibhav.hiremath@linaro.org>
 <1432818224-17070-5-git-send-email-vaibhav.hiremath@linaro.org>
Message-ID: <874mmvyvzw.fsf@belgarion.home>
To: linux-arm-kernel@lists.infradead.org
List-Id: linux-arm-kernel.lists.infradead.org

Vaibhav Hiremath <vaibhav.hiremath@linaro.org> writes:

> @@ -167,6 +184,8 @@ struct pxa_i2c {
>  #define _ICR(i2c)	((i2c)->reg_icr)
>  #define _ISR(i2c)	((i2c)->reg_isr)
>  #define _ISAR(i2c)	((i2c)->reg_isar)
> +#define _ILCR(i2c)	((i2c)->reg_ilcr)
> +#define _IWCR(i2c)	((i2c)->reg_iwcr)
>  
>  /*
>   * I2C Slave mode address
> @@ -467,11 +486,16 @@ static void i2c_pxa_reset(struct pxa_i2c *i2c)
>  	if (i2c->reg_isar)
>  		writel(i2c->slave_addr, _ISAR(i2c));
>  #endif
> -
Not in this patch.

>  	/* set control register values */
>  	writel(I2C_ICR_INIT | (i2c->fast_mode ? ICR_FM : 0), _ICR(i2c));
>  	writel(readl(_ICR(i2c)) | (i2c->high_mode ? ICR_HS : 0), _ICR(i2c));
>  
> +	if (i2c->ilcr)
> +		writel(i2c->ilcr, _ILCR(i2c));
> +	if (i2c->iwcr)
> +		writel(i2c->iwcr, _IWCR(i2c));
> +	udelay(2);
This is a magical 2us. Where does it come from ?

Cheers.

-- 
Robert