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authorRobert Jarzmik <robert.jarzmik@free.fr>2014-07-30 22:50:59 +0200
committerMike Turquette <mturquette@linaro.org>2014-09-30 12:31:30 -0700
commitbda003036684b9779fca2b3d457621eaff9bcd0a (patch)
treeab1b69b8d74b6baa63c0dd021fbbf562f36c56e2 /block/cmdline-parser.c
parent7d1311b93e58ed55f3a31cc8f94c4b8fe988a2b9 (diff)
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clk: add pxa clocks infrastructure
Add a the common code used by all PXA variants. This is the first step in the transition from architecture defined clocks (in arch/arm/mach-pxa) towards clock framework. The goal is to have the same features (and not all the features) of the existing clocks, and enable the transition of PXA to device-tree. All PXA rely on a "CKEN" type clock, which : - has a gate (bit in CKEN register) - is generated from a PLL, generally divided - has an alternate low power clock Each variant will specialize the CKEN clock : - pxa25x have no low power clock - pxa27x in low power use always the 13 MHz ring oscillator - pxa3xx in low power have specific dividers for each clock The device-tree provides a list of CLK_* (ex: CLK_USB or CLK_I2C) to get a handle on the clock. While pxa-clock.h will describe all the clocks of all the variants, each variant will only use a subset of it. Signed-off-by: Robert Jarzmik <robert.jarzmik@free.fr> Signed-off-by: Mike Turquette <mturquette@linaro.org>
Diffstat (limited to 'block/cmdline-parser.c')
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