[U-Boot] [PATCH 02/20] dm: i2c: sandbox: Add debugging to the speed limit

[Heiko Schocher]

Hello Simon,

Am 20.04.2015 20:37, schrieb Simon Glass:
> Print a debug() message with the I2C speed is exceeded.
>
> Signed-off-by: Simon Glass <sjg at chromium.org>
> ---
>
>   drivers/i2c/sandbox_i2c.c | 4 +++-
>   1 file changed, 3 insertions(+), 1 deletion(-)
>
> diff --git a/drivers/i2c/sandbox_i2c.c b/drivers/i2c/sandbox_i2c.c
> index d6adc0f..621caec 100644
> --- a/drivers/i2c/sandbox_i2c.c
> +++ b/drivers/i2c/sandbox_i2c.c
> @@ -73,8 +73,10 @@ static int sandbox_i2c_xfer(struct udevice *bus, struct i2c_msg *msg,
>   	 * 400KHz for reads
>   	 */
>   	is_read = nmsgs > 1;
> -	if (i2c->speed_hz > (is_read ? 400000 : 100000))
> +	if (i2c->speed_hz > (is_read ? 400000 : 100000)) {
> +		debug("%s: Max speed exceeded\n", __func__);
>   		return -EINVAL;
> +	}

Why different speeds for reading/writing?

bye,
Heiko
>   	return ops->xfer(emul, msg, nmsgs);
>   }
>
>

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