[U-Boot] [PATCH v2 7/7] Tegra30: Add/enable Cardhu build (T30 reference board)

[Stephen Warren]

On 12/03/2012 04:45 PM, Tom Warren wrote:
> This build is stripped down. It boots to the command prompt.
> GPIO is the only peripheral supported. Others TBD.
> 
> include/configs/tegra-common.h now holds common config options
> for Tegra SoCs.

> diff --git a/board/nvidia/cardhu/cardhu.c b/board/nvidia/cardhu/cardhu.c

> +void pinmux_init(void)
> +{
> +	pinmux_config_table(tegra3_pinmux_common,
> +		ARRAY_SIZE(tegra3_pinmux_common));
> +
> +	pinmux_config_table(unused_pins_lowpower,
> +		ARRAY_SIZE(unused_pins_lowpower));
> +}

Oh, I see. Is any of the pinmux configuration actually needed for just
the UART to work? I suppose there's not much harm just setting up the
whole configuration from the start rather than adding it piece-meal.

> diff --git a/board/nvidia/cardhu/pinmux-config-cardhu.h b/board/nvidia/cardhu/pinmux-config-cardhu.h

> +static struct pingroup_config tegra3_pinmux_common[] = {

> +#ifdef CONFIG_SND_HDA_CODEC_REALTEK
> +	DEFAULT_PINMUX(SPDIF_IN, DAP2, DOWN, NORMAL, INPUT),
> +#else
> +	DEFAULT_PINMUX(SPDIF_IN, SPDIF, NORMAL, NORMAL, INPUT),
> +#endif

I'm pretty sure that define will never be enabled; it was some temporary
test thing that should be removed from our downstream kernel, which is
where I assume you got this table from.

> diff --git a/include/configs/cardhu.h b/include/configs/cardhu.h

> diff --git a/include/configs/tegra-common.h b/include/configs/tegra-common.h

> +#define CONFIG_SYS_CPU_OSC_FREQUENCY	1000000	/* Set CPU clock to 1GHz */

Is that correct for Tegra30?

> +#define V_NS16550_CLK			216000000	/* 216MHz (pllp_out0) */

I thought PLL_P ran at 408MHz on Tegra30? The kernel certainly sets it
up that way.

In this patch, you also should move MEM_LAYOUT_ENV_SETTINGS from
tegra-common-post.h into tegraNN-common.h, or something like that.