ST hardware have a bunch of clocks which must not be turned off. If drivers a) fail to obtain a reference to any of these or b) give up a previously obtained reference during suspend, the common clk framework will attempt to turn them off and the hardware will subsequently die. The only way to recover from this failure is to restart. To avoid either of these two scenarios from catastrophically disabling the running system we have implemented a clock domain where clocks are consumed and references are taken, thus preventing them from being shut down by the framework. Lee Jones (4): ARM: sti: stih407-family: Supply defines for CLOCKGEN A0 ARM: sti: stih407-family: Provide Clock Domain information clk: st: Provide a clock domain clk: dt: st: Introduce clock domain documentation .../devicetree/bindings/clock/st/st,clk-domain.txt | 34 ++++++++++++ arch/arm/boot/dts/stih407-family.dtsi | 13 +++++ drivers/clk/st/Makefile | 2 +- drivers/clk/st/clk-domain.c | 63 ++++++++++++++++++++++ include/dt-bindings/clock/stih407-clks.h | 4 ++ 5 files changed, 115 insertions(+), 1 deletion(-) create mode 100644 Documentation/devicetree/bindings/clock/st/st,clk-domain.txt create mode 100644 drivers/clk/st/clk-domain.c -- 1.9.1 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
