From mboxrd@z Thu Jan  1 00:00:00 1970
From: Marek Vasut <marex@denx.de>
Date: Tue, 17 Apr 2012 22:30:41 +0200
Subject: [U-Boot] [PATCH] mxs-i2c: Fix internal address byte order
In-Reply-To: <1334677065-6620-1-git-send-email-to-fleischer@t-online.de>
References: <1334677065-6620-1-git-send-email-to-fleischer@t-online.de>
Message-ID: <201204172230.41222.marex@denx.de>
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To: u-boot@lists.denx.de

Dear Torsten Fleischer,

> Large EEPROMs, e.g. 24lc32, need 2 byte to address the internal memory.
> These devices require that the high byte of the internal address has to be
> written first.
> The mxs_i2c driver currently writes the address' low byte first.
> 
> The following patch fixes the byte order of the internal address that
> should be written to the I2C device.
> 
> Signed-off-by: Torsten Fleischer <to-fleischer@t-online.de>

Acked-by: Marek Vasut <marex@denx.de>

> 
> CC: Marek Vasut <marex@denx.de>
> CC: Stefano Babic <sbabic@denx.de>
> CC: Fabio Estevam <fabio.estevam@freescale.com>
> ---
>  drivers/i2c/mxs_i2c.c |    2 +-
>  1 files changed, 1 insertions(+), 1 deletions(-)
> 
> diff --git a/drivers/i2c/mxs_i2c.c b/drivers/i2c/mxs_i2c.c
> index c8fea32..48aaaa6 100644
> --- a/drivers/i2c/mxs_i2c.c
> +++ b/drivers/i2c/mxs_i2c.c
> @@ -97,7 +97,7 @@ void mxs_i2c_write(uchar chip, uint addr, int alen,
> 
>  	for (i = 0; i < alen; i++) {
>  		data >>= 8;
> -		data |= ((char *)&addr)[i] << 24;
> +		data |= ((char *)&addr)[alen - i - 1] << 24;
>  		if ((i & 3) == 2)
>  			writel(data, &i2c_regs->hw_i2c_data);
>  	}

Best regards,
Marek Vasut