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Commit ea53c1ea authored by David Collins's avatar David Collins
Browse files

regulator: cpr3-hmss-regulator: use SPEED_BIN in fuse combo selection 



Expand the fuse combination specification so that a new set of
fuse combos is used for SPEED_BIN fuse value 1.  Enforce this
mapping:

Fuse combo   SPEED_BIN   CPR_REV
  0 -  7         0        0 - 7
  8 - 15         1        0 - 7

Change-Id: Id15a41bd3e01ab3f14e22f1ce21a5740d102a08e
Signed-off-by: default avatarDavid Collins <collinsd@codeaurora.org>
parent ec971dd4

Documentation/devicetree/bindings/regulator/cpr3-hmss-regulator.txt

+4 −2
Original line number Diff line number Diff line
@@ -160,8 +160,10 @@ HMSS specific properties: 
		    the device.  This value is utilized by several other

		    properties.  Supported values are 1 up to the maximum

		    possible for a given regulator type.  For HMSS the maximum

		    supported value is 8.  These combos correspond to CPR

		    revision fuse values 0 to 7 in order.

		    supported value is 16.  The first 8 fuse combos correspond

		    to speed bin fuse value 0 along with CPR revision fuse

		    values 0 to 7.  The last 8 fuse combos correspond to speed

		    bin fuse value 1 along with CPR revision fuse values 0 to 7.



- qcom,ldo-headroom-voltage

	Usage:      required if qcom,vdd-threadN-ldo-supply is specified for the

drivers/regulator/cpr3-hmss-regulator.c

+5 −27
Original line number Diff line number Diff line
@@ -81,33 +81,11 @@ struct cpr3_msm8996_hmss_fuses { 
	u64	aging_init_quot_diff;

};



/**

 * enum cpr3_msm8996_hmss_fuse_combo - fuse combinations supported by the HMSS

 *			CPR3 controller on MSM8996

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV0:	Part with CPR fusing rev == 0

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV1:	Part with CPR fusing rev == 1

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV2:	Part with CPR fusing rev == 2

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV3:	Part with CPR fusing rev == 3

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV4:	Part with CPR fusing rev == 4

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV5:	Part with CPR fusing rev == 5

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV6:	Part with CPR fusing rev == 6

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV7:	Part with CPR fusing rev == 7

 * %CPR3_MSM8996_HMSS_FUSE_COMBO_COUNT:		Defines the number of

 *						combinations supported

 *

 * This list will be expanded as new requirements are added.

/*

 * Fuse combos 0 -  7 map to CPR fusing revision 0 - 7 with speed bin fuse = 0.

 * Fuse combos 8 - 15 map to CPR fusing revision 0 - 7 with speed bin fuse = 1.

 */

enum cpr3_msm8996_hmss_fuse_combo {

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV0 = 0,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV1 = 1,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV2 = 2,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV3 = 3,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV4 = 4,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV5 = 5,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV6 = 6,

	CPR3_MSM8996_HMSS_FUSE_COMBO_CPR_REV7 = 7,

	CPR3_MSM8996_HMSS_FUSE_COMBO_COUNT

};

#define CPR3_MSM8996_HMSS_FUSE_COMBO_COUNT	16



/*

 * Constants which define the name of each fuse corner.  Note that no actual
@@ -565,7 +543,7 @@ static int cpr3_msm8996_hmss_read_fuse_data(struct cpr3_regulator *vreg) 
		}

	}



	vreg->fuse_combo = fuse->cpr_fusing_rev;

	vreg->fuse_combo = fuse->cpr_fusing_rev + 8 * fuse->speed_bin;

	if (vreg->fuse_combo >= CPR3_MSM8996_HMSS_FUSE_COMBO_COUNT) {

		cpr3_err(vreg, "invalid CPR fuse combo = %d found\n",

			vreg->fuse_combo);