[U-Boot] [U-Boot, V2] arm: omap3: Enable clocks for peripherals only if they are used

[Tom Rini <trini@ti.com>]

On Sat, Nov 30, 2013 at 07:59:58AM +0100, Michael Trimarchi wrote:

> This patch change the per_clocks_enable() function used in OMAP3
> code to enable peripherals clocks. Only required clock should be
> activated. So if the board use the uart(x) as a console we need
> to activate it. The Board's config should include define to enable
> every subsystem that the board use. For a complete list
> of affected peripherals, registers CM_FCLKEN_PER and CM_ICLKEN_PER
> should be checked.
> Right now the bootloader can enable and disable clocks for:
> uart(x) using CONFIG_SYS_NS16550
> gpio bank (x) using CONFIG_OMAP3_GPIO_X with X = { 2, 3, 4, 5, 6 }
> i2c bus using CONFIG_DRIVER_OMAP34XX_I2C.
> 
> Not required gptimer(x) and mcbsp(x) for booting are disabled by default and
> are not supported by any define.
> Their activation need to included in the per_clocks_enable if the
> peripheral is included. Not booting board should enable the peripheral
> clock connected to their driver
> 
> Signed-off-by: Michael Trimarchi <michael@amarulasolutions.com>
> Cc: Igor Grinberg <grinberg@compulab.co.il>
> Cc: Tom Rini <trini@ti.com>
> Acked-by: Igor Grinberg <grinberg@compulab.co.il>

Applied to u-boot-ti/master, thanks!

-- 
Tom
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