This patch series integrates the DC-DC clock domain into the i.MX28 clock driver. That enables consumers to change DC-DC clock frequency in order to avoid interferences without changing hardware. The final patch in the near future should handle the i.MX23, too. * patch 1 contains the update for the DT binding documentation * patch 2 defines the PMU as the clock consumer * patch 3 is extension of the clock driver All information about the DC-DC clock was taken from the reference manual [1]. Unfortunately the logical diagram doesn't contain the DC-DC clock domain, so i decide to create a ASCII diagramm (please look at patch 1). The series is related to the upcoming MXS PMU and regulator driver (last patch [2], working repo [3]). At the end i still have a question: The MXS PMU driver will using the syscon interface for accessing the HW_POWER registers. The ctrl register for the DC-DC clock domain is located under HW_POWER and not under HW_CLKCTRL. So should the clock registration be done in clock driver like in patch 3 or in the upcoming PMU driver? Any other comments about the implementation are also welcome. Regards Stefan [1] - http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf i.MX28 Applications Processor Reference Manual, Rev. 2, 08/2013 11.12.10 DC-DC Miscellaneous Register (HW_POWER_MISC) [2] - http://marc.info/?l=linux-pm&m=142698428606221&w=2 [3] - https://github.com/lategoodbye/linux-mxs-power/tree/syscon Stefan Wahren (3): DT: imx28-clock: add ids for DC-DC clock domain ARM: imx28: define PMU as clock consumer clk: imx28: add DC-DC clock domain .../devicetree/bindings/clock/imx28-clock.txt | 3 ++ arch/arm/boot/dts/imx28.dtsi | 2 ++ drivers/clk/mxs/clk-imx28.c | 33 +++++++++++++++++--- 3 files changed, 33 insertions(+), 5 deletions(-) -- 1.7.9.5 -- 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
