Messages in this thread | | | From | Alex Elder <> | Subject | [PATCH v3 0/5] clk: bcm: prerequisite and bus clock support | Date | Thu, 29 May 2014 09:05:56 -0500 |
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Currently only peripheral clocks are supported for Broadcom platforms that use Kona style CCUs for clocking. This series adds support for bus clocks as well.
One motivation for doing this is that there exist peripheral clocks that cannot be configured without having first initialized a related bus clock. Adding bus clock support allows such peripheral clocks to be usable.
This also imposes a new requirement, however--that the bus clock be initialized *before* the clock that depends on it. For this, we define the notion of a "prerequisite" clock. If a clock has a prerequisite specified, that prequisite clock will be initialized first. For now this only affects startup-time initialization.
These patches are based on Mike Turquette's current "clk-next" branch. 4c8f806 Merge branch 'clk-fixes' into clk-next
They are available here: http://git.linaro.org/landing-teams/working/broadcom/kernel.git Branch review/bcm-bus-clk-v3
-Alex
Version history: v3: - Deleted unused clk_lookup field from struct kona_clk - Now use term "initialized" rather than "enabled" v2: - Added field "p" to the previously unnamed prereq union.
Alex Elder (5): clk: bcm281xx: add an initialized flag clk: bcm281xx: implement prerequisite clocks clk: bcm281xx: add bus clock support clk: bcm281xx: define a bus clock ARM: dts: add bus clock bsc3_apb for bcm281xx
arch/arm/boot/dts/bcm11351.dtsi | 3 +- drivers/clk/bcm/clk-bcm281xx.c | 13 +++- drivers/clk/bcm/clk-kona-setup.c | 96 +++++++++++++++++++++++++++- drivers/clk/bcm/clk-kona.c | 120 ++++++++++++++++++++++++++++++++++- drivers/clk/bcm/clk-kona.h | 34 +++++++++- include/dt-bindings/clock/bcm281xx.h | 3 +- 6 files changed, 258 insertions(+), 11 deletions(-)
-- 1.9.1
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