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Commit 3791c8c7 authored by Tirupathi Reddy's avatar Tirupathi Reddy
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regulator: mem-acc: add snapshot of mem-acc-regulator driver 



This is snapshot of the mem-acc-regulator driver as of msm-4.9
'commit 98cddae6cdce ("Merge "msm: camera: Fix media_entity
assignment")'.

Change-Id: I0c28466bfeb1763c34cbbe076fd14583d44cbf15
Signed-off-by: default avatarTirupathi Reddy <tirupath@codeaurora.org>
parent b2bdf7dc

Documentation/devicetree/bindings/regulator/mem-acc-regulator.txt

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Qualcomm Technologies, Inc. Memory Accelerator



Memory accelerator configures the power-mode (corner) for the

accelerator.



Required properties:

- compatible:			Must be "qcom,mem-acc-regulator"

- regulator-name:		A string used to describe the regulator

- regulator-min-microvolt:	Minimum corner value as min constraint, which

				should be 1 for SVS corner

- regulator-max-microvolt:	Maximum corner value as max constraint, which

				should be 4 for SUPER_TURBO or 3 for TURBO



Optional properties:

- reg:				Register addresses for acc-sel-l1, acc-sel-l2 control, acc-en,

				MEM ACC eFuse address, acc-l1-custom , acc-l2-custom,

				mem-acc-type1, mem-acc-type2, mem-acc-type3, mem-acc-type4,

				mem-acc-type5 and mem-acc-type6.

- reg-names:			Register names. Must be "acc-sel-l1",

				"acc-sel-l2", "acc-en", "efuse_addr",

				"acc-l1-custom", "acc-l2-custom", "mem-acc-type1",

				"mem-acc-type2", "mem-acc-type3", "mem-acc-type4",

				"mem-acc-type5", "mem-acc-type6".

				A given mem-acc-regulator driver must have "acc-sel-l1" or

				"acc-sel-l2" or "mem-acc-type*" reg-names property and

				related register address property.

- qcom,corner-acc-map		Array which maps the APC (application processor)

				corner value to the accelerator corner. The number of elements

				in this property defines the number of accelerator corners.

				Either qcom,corner-acc-map property or qcom,cornerX-reg-config

				properties should be specified.

- qcom,acc-en-bit-pos		Array which specifies bit positions in the

				'acc-en' register. Setting these bits forces the

				the acclerator to use the corner value specified

				in the 'acc-sel-l1' and 'acc-sel-l2' register.

- qcom,acc-sel-l1-bit-size	Integer which specifies the number of bits in

				the 'acc-sel-l1' register which define each L1

				select parameter.  If this property is not

				specified, then a default value of 2 is assumed.

- qcom,acc-sel-l1-bit-pos	Array which specifies bit positions in the

				'acc-sel-l1' register. Each element in this array

				is the LSB of an N-bit value where 'N' is

				defined by the qcom,acc-sel-l1-bit-size

				property.  This N-bit value specifies the corner

				value used by the accelerator for the L1 cache.

- qcom,acc-sel-l2-bit-size	Integer which specifies the number of bits in

				the 'acc-sel-l2' register which define each L2

				select parameter.  If this property is not

				specified, then a default value of 2 is assumed.

- qcom,acc-sel-l2-bit-pos	Array which specifies bit positions in the

				'acc-sel-l2' register. Each element in this array

				is the LSB of an N-bit value where 'N' is

				defined by the qcom,acc-sel-l2-bit-size

				property.  This N-bit value specifies the corner

				value used by the accelerator for the L2 cache.

- qcom,l1-acc-custom-data:	Array which maps APC corner values to L1 ACC custom data values.

				The corresponding custom data is written into the custom register

				while switching between APC corners. The custom register address

				is specified by "acc-11-custom" reg-property. The length of the array

				should be equal to number of APC corners.

- qcom,l2-acc-custom-data:	Array which maps APC corner values to L2 ACC custom data values.

				The corresponding custom data is written into the custom register

				while switching between APC corners. The custom register address

				is specified by "acc-l2-custom" reg-property. The length of the array

				should be equal to number of APC corners.

- qcom,override-acc-fuse-sel:	Array of 4 elements which specify the way to read the override fuse.

				The override fuse value is used by the qcom,override-fuse-version-map

				to identify the correct set of override properties.

				The 4 elements with index [0..4] are:

				  [0] => the fuse row number of the selector

				  [1] => LSB bit position of the bits

				  [2] => number of bits

				  [3] => fuse reading method, 0 for direct reading or 1 for SCM reading

- qcom,override-fuse-version-map: Array of integers which each match to a override fuse value.

				Any element in a tuple may use the value 0xffffffff as a wildcard.

				The index of the first value (in the array) which matches the override fuse

				is used to select the right tuples from the other override properties.

- qcom,override-corner-acc-map:	Array of tuples which overrides the existing acc-corner map

				(specified by qcom,corner-acc-map) with corner values selected

				from this property. "qcom,override-corner-acc-map" must contain the

				same number of tuples as "qcom,override-fuse-version-map". These tuples

				are then mapped one-to-one in the order specified. If the

				"qcom,override-fuse-version-map" property is not specified, then

				"qcom,override-corner-acc-map" must contain a single tuple which is then

				applied unconditionally.

- qcom,override-l1-acc-custom-data:	Array of tuples of which overrides the existing l1-acc-custom data

				(specified by qcom,l1-acc-custom-data), with values specified in this property.

				The corresponding custom data is written into the custom register while

				switching between APC corners. The custom register address is specified by

				"acc-11-custom" reg-property. This property can only be specified if the

				"qcom,l1-acc-custom-data" is already defined. If the

				"qcom,override-fuse-version-map" property is specified, then

				qcom,override-l1-acc-custom-data must contain the same number of tuples

				as "qcom,override-fuse-version-map". These tuples are then mapped one-to-one

				in the order specified. If the qcom,override-fuse-version-map property is

				not specified, then "qcom,override-l1-acc-custom-data" must contain a single

				tuple which is then applied unconditionally.

- qcom,override-l2-acc-custom-data:	Array of tuples of which overrides the existing l1-acc-custom data

				(specified by qcom,l2-acc-custom-data), with values specified in this property.

				The corresponding custom data is written into the custom register while

				switching between APC corners. The custom register address is specified by

				"acc-12-custom" reg-property. This property can only be specified if the

				"qcom,l2-acc-custom-data" is already defined. If the

				"qcom,override-fuse-version-map" property is specified, then

				"qcom,override-l2-acc-custom-data" must contain the same number of tuples

				as "qcom,override-fuse-version-map". These tuples are then mapped one-to-one

				in the order specified. If the qcom,override-fuse-version-map property is

				not specified, then "qcom,override-l2-acc-custom-data" must contain a single

				tuple which is then applied unconditionally.

- qcom,mem-acc-type1:		Array which specifies the value to be written to the mem acc type1 register for each fuse

				corner, from the lowest fuse corner to the highest fuse corner. The length of the array

				must be equal to the number of APC fuse corners. This property must be present if reg names

				specifies mem-acc-type1.

- qcom,mem-acc-type2:		Same as qcom,mem-acc-type1 except for mem acc type2 register.

- qcom,mem-acc-type3:		Same as qcom,mem-acc-type1 except for mem acc type3 register.

- qcom,mem-acc-type4:		Same as qcom,mem-acc-type1 except for mem acc type4 register.

- qcom,mem-acc-type5:		Same as qcom,mem-acc-type1 except for mem acc type5 register.

- qcom,mem-acc-type6:		Same as qcom,mem-acc-type1 except for mem acc type6 register.

- qcom,acc-reg-addr-list:	Array of register addresses which need to be programmed during any corner switch.

				This property can be used when multi register configuration is needed during a corner switch.

- qcom,acc-init-reg-config:	Array of tuples specify the multi register configuration sequence need to be programmed

				one time during device boot.

				The format of each tuple as below:

					<register-address-index, value>

				Where register-address-index is used as an index in to qcom,acc-reg-addr-list property

				to get the required register address and the value is programmed in to the corresponding

				mapped register address. This property is required if qcom,acc-corner-addr-val-map

				property specified.

- qcom,cornerX-reg-config:	Array of tuples specify the multi register configuration sequence need to be programmed

				when switching from acc corner X to any other corner. The possible values for X are {1, N},

				where N is the value defined in qcom,num-acc-corners.

				The format of each tuple as below:

					<register-address-index, value>

				Where register-address-index is used as an index in to qcom,acc-reg-addr-list property

				to get the required register address and the value is programmed in to the corresponding

				mapped register address. Same index can be used multiple times when the register is

				required to configure multiple times with different values in the sequence.

				The number of register configuration sequences should be equal to N, where N is the

				value specified in qcom,num-acc-corners property. Also, the number of tuples in each

				register configuration sequence should be same and must be equal to the maximum required

				register configurations in any sequence. The invalid register configuration can be

				specified as <(-1) (-1)>.  This property can only be specified when qcom,acc-corner-addr-val-map

				property already defined. Either this property or qcom,corner-acc-map should be specified.

- qcom,num-acc-corners:		The number of acc corners supported. This property is required if qcom,cornerX-reg-config

				property specified.

- qcom,boot-acc-corner:		The acc corner used during device boot. This property is required if qcom,cornerX-reg-config

				property specified.

- qcom,override-cornerX-reg-config:	A grouping of register configuration sequence lists. Each list is same as

				the qcom,cornerX-reg-config property. The possible values for X are {1, N} where N is

				the value defined in qcom,num-acc-corners. This property is used to specify the different

				register configuration sequence lists and select one list among them based on the selected

				index in qcom,override-fuse-version-map property. The selected list overrides the existing

				register configuration sequence list specified in "qcom,cornerX-reg-config". If the

				"qcom,override-fuse-version-map" property is specified, then

				"qcom,override-cornerX-reg-config" must contain the same number of register

				configuration sequence lists as the number of tuples in "qcom,override-fuse-version-map".

				These register configuration sequence lists are then mapped one-to-one

				in the order specified. If the qcom,override-fuse-version-map property is

				not specified, then "qcom,override-cornerX-reg-config" must contain a single

				register configuration sequence list which is then applied unconditionally.

				This property can only be specified if qcom,cornerX-reg-config property is already defined.

- qcom,override-acc-range-fuse-list:	Array of tuples define the selection parameters used for selecting the override

				mem-acc configuration. The fused values for these selection parameters are used by the

				qcom,override-fuse-range-map to identify the correct set of override properties.

				Each tuple contains 4 elements as defined below:

				  [0] => the fuse row number of the selector

				  [1] => LSB bit position of the bits

				  [2] => number of bits

				  [3] => fuse reading method, 0 for direct reading or 1 for SCM reading

- qcom,override-fuse-range-map:	Array of tuples where each tuple specifies the allowed range for all the selection parameters

				defined in qcom,override-acc-range-fuse-list. The fused values of these selection parameters

				are compared against their allowed range in each tuple starting from 0th tuple and use the

				first matched tuple index to select the right tuples from the other override properties.

				Either qcom,override-fuse-range-map or qcom,override-fuse-version-map is used to select

				the override configuration. The qcom,override-fuse-range-map is used if both the

				properties are specified.



mem_acc_vreg_corner: regulator@fd4aa044 {

	compatible = "qcom,mem-acc-regulator";

	reg = <0xfd4aa048 0x1>, <0xfd4aa044 0x1>, <0xfd4af000 0x1>,

		<0x58000 0x1000>, <0x01942124 0x4>, <0xf900d084 1>,

		<0xf900d088 1>, <0xf900d08c 1>, <0xf900d090 1>;

	reg-names = "acc-en", "acc-sel-l1" , "acc-sel-l2",

		"efuse_addr", "acc-l2-custom", "mem-acc-type1",

		"mem-acc-type2", "mem-acc-type3", "mem-acc-type4";

	regulator-name = "mem_acc_corner";

	regulator-min-microvolt = <1>;

	regulator-max-microvolt = <3>;



	qcom,acc-en-bit-pos = <0>;

	qcom,acc-sel-l1-bit-pos = <0>;

	qcom,acc-sel-l2-bit-pos = <0>;

	qcom,acc-sel-l1-bit-size = <2>;

	qcom,acc-sel-l2-bit-size = <2>;

	qcom,corner-acc-map = <0 1 3>;

	qcom,l2-acc-custom-data = <0x0 0x3000 0x3000>;



	qcom,override-acc-fuse-sel = <0 52 2 0>;

	qcom,override-fuse-version-map = <0>,

					 <2>,

					 <(-1)>;

	qcom,override-acc-range-fuse-list =

					<37 40 3 0>,

					<36 30 8 0>;

	qcom,override-fuse-range-map =

				<0 0>, <  0   0>, <49 63>,

				<1 1>, <  0   0>, <50 63>,

				<0 1>, < 95 255>, < 0 63>;

	qcom,override-corner-acc-map =	<0 0 1>,

					<0 1 2>,

					<0 1 1>;

	qcom,override-l2-acc-custom-data = <0x0	0x0	0x3000>,

					  <0x0	0x3000	0x3000>,

					  <0x0	0x0	0x0>;

	qcom,mem-acc-type1 = <0x02 0x02 0x00>;

	qcom,mem-acc-type2 = <0x02 0x02 0x00>;

	qcom,mem-acc-type3 = <0x02 0x02 0x00>;

	qcom,mem-acc-type4 = <0x02 0x02 0x00>;



	qcom,acc-reg-addr-list = <0x01942130 0x01942124 0x01942120>;

	qcom,acc-init-reg-config = <1 0x55> <2 0x02>;



	qcom,num-acc-corners = <3>;

	qcom,boot-acc-corner = <2>;

	qcom,corner1-reg-config =

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 1 -> 1 */

		<  1 0x155>, <  2   0x0>, <  3 0x155>, /* 1 -> 2 */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>; /* 1 -> 3 */



	qcom,corner2-reg-config =

		<  1 0x155>, <(-1) (-1)>, <(-1) (-1)>, /* 2 -> 1 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 2 -> 2 */

		<  1 0x155>, <  2   0x0>, <  3 0x155>; /* 2 -> 3 */



	qcom,corner3-reg-config =

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 3 -> 1 */

		<  1 0x155>, <(-1) (-1)>, <(-1) (-1)>, /* 3 -> 2 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>; /* 3 -> 3 */



	qcom,override-corner1-reg-config =

		/* 1st fuse version tuple matched */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 1 -> 1 */

		<  1 0x155>, <  2   0x0>, <  3 0x155>, /* 1 -> 2 */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 1 -> 3 */



		/* 2nd fuse version tuple matched */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 1 -> 1 */

		<  1 0x155>, <  2   0x0>, <  3 0x155>, /* 1 -> 2 */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 1 -> 3 */



		/* 3rd fuse version tuple matched */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 1 -> 1 */

		<  1 0x155>, <  3  0x22>, <  3 0x155>, /* 1 -> 2 */

		<  1   0x0>, <  2 0x155>, <  3 0x144>; /* 1 -> 3 */



	qcom,override-corner2-reg-config =

		/* 1st fuse version tuple matched */

		<  1 0x144>, <  1  0x11>, <(-1) (-1)>, /* 2 -> 1 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 2 -> 2 */

		<  1 0x155>, <  2   0x0>, <  3 0x155>, /* 2 -> 3 */



		/* 2nd fuse version tuple matched */

		<  1 0x144>, <  2 0x133>, <(-1) (-1)>, /* 2 -> 1 */

		<(-1) (-1)>, <  1  0x33>, <(-1) (-1)>, /* 2 -> 2 */

		<  1 0x133>, <  2   0x0>, <  3 0x155>, /* 2 -> 3 */



		/* 3rd fuse version tuple matched */

		<  1 0x144>, <  1  0x11>, <(-1) (-1)>, /* 2 -> 1 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 2 -> 2 */

		<  1 0x155>, <  2  0x22>, <  3 0x155>; /* 2 -> 3 */





	qcom,override-corner3-reg-config =

		/* 1st fuse version tuple matched */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 3 -> 1 */

		<  1 0x155>, <(-1) (-1)>, <(-1) (-1)>, /* 3 -> 2 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 3 -> 3 */



		/* 2nd fuse version tuple matched */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 3 -> 1 */

		<  1 0x155>, <(-1) (-1)>, <(-1) (-1)>, /* 3 -> 2 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>, /* 3 -> 3 */



		/* 3rd fuse version tuple matched */

		<  1   0x0>, <  2 0x155>, <(-1) (-1)>, /* 3 -> 1 */

		<  1 0x155>, <  3  0x11>, <(-1) (-1)>, /* 3 -> 2 */

		<(-1) (-1)>, <(-1) (-1)>, <(-1) (-1)>; /* 3 -> 3 */

};

drivers/regulator/Kconfig

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@@ -997,6 +997,14 @@ config REGULATOR_WM8994 
	  This driver provides support for the voltage regulators on the

	  WM8994 CODEC.



config REGULATOR_MEM_ACC

	tristate "QTI Memory accelerator regulator driver"

	help

	  Say y here to enable the memory accelerator driver for Qualcomm

	  Technologies, Inc. (QTI) chips. The accelerator controls delays

	  applied for memory accesses.  This driver configures the power-mode

	  (corner) for the memory accelerator.



config REGULATOR_REFGEN

	tristate "Qualcomm Technologies, Inc. REFGEN regulator driver"

	depends on OF

drivers/regulator/Makefile

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@@ -126,6 +126,7 @@ obj-$(CONFIG_REGULATOR_WM831X) += wm831x-ldo.o 
obj-$(CONFIG_REGULATOR_WM8350) += wm8350-regulator.o

obj-$(CONFIG_REGULATOR_WM8400) += wm8400-regulator.o

obj-$(CONFIG_REGULATOR_WM8994) += wm8994-regulator.o

obj-$(CONFIG_REGULATOR_MEM_ACC) += mem-acc-regulator.o

obj-$(CONFIG_REGULATOR_REFGEN) += refgen.o

obj-$(CONFIG_REGULATOR_RPM_SMD) += rpm-smd-regulator.o

obj-$(CONFIG_REGULATOR_SPM) += spm-regulator.o

drivers/regulator/mem-acc-regulator.c

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