[U-Boot] [PATCH 2/2] ARM: tegra: Add the Tamonten™ NG Evaluation Carrier board

[Stephen Warren <swarren@wwwdotorg.org>]

On 09/04/2013 07:00 AM, Alban Bedel wrote:
> Add support for the new Tamonten? NG platform from Avionic Design. 
> Currently only I2C, MMC, USB and ethernet have been tested.

(Also CC'ing the Tegra maintainer here)

> diff --git a/board/avionic-design/common/tamonten-ng.c
> b/board/avionic-design/common/tamonten-ng.c

> +void pmu_write(uchar reg, uchar data) +{ +	int i; +
> i2c_set_bus_num(0);	/* PMU is on bus 0 */ +	for (i = 0; i <
> MAX_I2C_RETRY; ++i) { +		if (i2c_write(PMU_I2C_ADDRESS, reg, 1,
> &data, 1)) +			udelay(100); +		else +			break; +	} +}

Is there really a need to retry the I2C transactions? If so, why do
they fail? I assume this was just copy/pasted from some other board
file, and there's no need for any retries?

It'd be nice if there was a proper PMU subsystem, so we could have a
specific driver for each PMU chip, rather than having
open-coded/custom writes to the PMU registers in each board file, but
I guess that's not an issue with this patch specfically.

> diff --git a/include/configs/tec-ng.h b/include/configs/tec-ng.h

> +/* support the new (FDT-based) image format */ +#define
> CONFIG_FIT

Hmmm. Do the standard Tegra boot scripts in tegra-common-post.h deal
well with FIT? I've tried to avoid FIT usage as much as possible.