This patch series adds on-chip regulator support to Freescale i.MX23 and i.MX28. It's the result of the last discussion about cpufreq-dt support [1]. This series doesn't contain cpufreq-dt support anymore because it violated a constraint between VDDD voltage and EMI clock frequency (Thanks to Juergen Borleis for pointing out). The cpufreq-dt support would be a further patch series. Summary ======= Patch 1,2,3 - enable syscon support and add driver for mxs power subsystem Patch 4,5,6 - enable regulator support for i.MX23/i.MX28 The main use of mxs_power driver is to trigger probing of the underlying DT child nodes like the on-chip regulators. The mxs-regulator driver provides for instance the voltage scaling support. A detailed description of the i.MX28 power subsystem is in the reference manual [2] and application note 4199 [3]. Changes since V1 ================ - rebase on Linux 4.1-rc1 - remove cpufreq-dt support - use syscon for register access as suggested by Mark Brown - rework regulator ramp up handling as suggested by Mark Brown - use real switching frequencies for DC-DC instead of clock settings - add warning in case of invalid switching frequency as suggested by Mark Brown - some code clean ups - add ASCII art of regulators to binding doc - add more comments to regulator driver - add COMPILE_TEST to dependencies for mxs power as suggested by Sebastian Reichel - make use of stmp_device.h [1] - http://comments.gmane.org/gmane.linux.power-management.general/58287 [2] - http://cache.freescale.com/files/dsp/doc/ref_manual/MCIMX28RM.pdf [3] - http://cache.freescale.com/files/32bit/doc/app_note/AN4199.pdf Stefan Wahren (6): DT: add binding for mxs power subsystem ARM: mxs: select syscon for platform power: mxs_power: add driver for mxs power subsystem DT: add binding for mxs on-chip regulators regulator: add mxs on-chip regulator driver ARM: dts: enable regulator support for i.MX23/i.MX28 .../devicetree/bindings/power/mxs_power.txt | 17 + .../bindings/regulator/mxs-regulator.txt | 65 +++ arch/arm/boot/dts/imx23.dtsi | 40 +- arch/arm/boot/dts/imx28.dtsi | 40 +- arch/arm/mach-mxs/Kconfig | 1 + drivers/power/Kconfig | 8 + drivers/power/Makefile | 1 + drivers/power/mxs_power.c | 136 +++++ drivers/regulator/Kconfig | 8 + drivers/regulator/Makefile | 1 + drivers/regulator/mxs-regulator.c | 540 ++++++++++++++++++++ 11 files changed, 855 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/power/mxs_power.txt create mode 100644 Documentation/devicetree/bindings/regulator/mxs-regulator.txt create mode 100644 drivers/power/mxs_power.c create mode 100644 drivers/regulator/mxs-regulator.c -- 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
