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author | Michael Trimarchi <michael@amarulasolutions.com> | 2013-11-30 07:59:58 +0100 |
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committer | Tom Rini <trini@ti.com> | 2013-12-06 07:02:32 -0500 |
commit | f33b9bd3984fb11e1d8566a866adc5957b1e1c9d (patch) | |
tree | 18a16d2db234ce9d75b0cfabe57c86eae3c799aa /drivers/usb | |
parent | 74007b8519f4cfb4aa0f0af397ca71dde04172bf (diff) | |
download | u-boot-imx-f33b9bd3984fb11e1d8566a866adc5957b1e1c9d.zip u-boot-imx-f33b9bd3984fb11e1d8566a866adc5957b1e1c9d.tar.gz u-boot-imx-f33b9bd3984fb11e1d8566a866adc5957b1e1c9d.tar.bz2 |
arm: omap3: Enable clocks for peripherals only if they are used
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>
Diffstat (limited to 'drivers/usb')
0 files changed, 0 insertions, 0 deletions