msm: clock-cpu-titanium: Introduce a CPU scaling driver for msmtitanium

Qualcomm MSMTITANIUM CPU clock tree

clock-cpu-titanium is a device that represents the MSMTITANIUM CPU subystem clock

tree. It lists the various power supplies that need to be scaled when the

clocks are scaled and also other HW specific parameters like fmax tables etc.

The root clock generator could have the ramp controller in built.

Ramp control will allow programming the sequence ID for pulse swallowing,

enable sequence and for linking sequence IDs.

Required properties:

- compatible:		Must be "qcom,clock-cpu-titanium".

- reg:			Pairs of physical base addresses and region sizes of

			memory mapped registers.

- reg-names:		Names of the bases for the above registers. Expected

			bases are:

			"c0-pll", "c1-pll", "c0-mux", "c1-mux", "cci-mux",

			"efuse", "perf_base"(optional), "rcgwr-c0-base(optional)",

			"rcgwr-c1-base(optional)".

- clocks:		The clocks sources used by the cluster/cci mux.

- clock-names:		Name of the clocks for the above clocks.

- vdd-mx-supply:	The regulator powering all the PLLs of clusters & cci.

- vdd-cl-supply:	The regulator powering the clusters & cci.

- qcom,speedX-bin-vY-ZZZ:

			A table of CPU frequency (Hz) to voltage (corner)

			mapping that represents the max frequency possible

			for each supported voltage level for a CPU. 'X' is

			the speed bin into which the device falls into - a

			bin will have unique frequency-voltage relationships.

			'Y' is the characterization version, implying that

			characterization (deciding what speed bin a device

			falls into) methods and/or encoding may change. The

			values 'X' and 'Y' are read from efuse registers, and

			the right table is picked from multiple possible tables.

			'ZZZ' can be cl for(c0 & c1) or cci depending on whether

			the table for the clusters or cci.

Example:

	clock_cpu: qcom,cpu-clock-titanium@b116000 {

		compatible = "qcom,cpu-clock-titanium";

		reg =   <0xb114000  0x68>,

			<0xb014000  0x68>,

			<0xb116000  0x400>,

			<0xb111050  0x08>,

			<0xb011050  0x08>,

			<0xb1d1050  0x08>,

			<0x00a412c  0x08>;

		reg-names = "rcgwr-c0-base", "rcgwr-c1-base",

			    "c0-pll", "c0-mux", "c1-mux",

			    "cci-mux", "efuse";

		vdd-mx-supply = <&pmtitanium_s7_level_ao>;

		vdd-cl-supply = <&apc_vreg_corner>;

		clocks = <&clock_gcc clk_xo_a_clk_src>;

		clock-names = "xo_a";

		qcom,num-clusters = <2>;

		qcom,speed0-bin-v0-cl =

			<          0 0>,

			< 2208000000 7>;

		qcom,speed0-bin-v0-cci =

			<          0 0>,

			<  883200000 7>;

		#address-cells = <1>;

		#size-cells = <1>;

	};

obj-$(CONFIG_ARCH_MSM8916)	+= clock-gcc-8952.o

obj-$(CONFIG_ARCH_MSM8916)	+= clock-gcc-titanium.o

obj-$(CONFIG_ARCH_MSM8916)	+= clock-rcgwr.o

obj-$(CONFIG_ARCH_MSM8916)      += clock-cpu-titanium.o

obj-y				+= gdsc.o

obj-y				+= mdss/