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Commit b0392e0c authored by Anirudh Ghayal's avatar Anirudh Ghayal
Browse files

regulator: cpr-regulator: Add a DT property for min. quotient difference 



There are targets where the minimum target quotient difference between the
highest and (highest - 1) fuse corner may be lower than 50. Add an optional
property to allow passing this value as platform data. If the property
is not present use a default value of 50.

Change-Id: I72901d82743e6fb0915a7e53cefbd4861d0ca3db
Signed-off-by: default avatarAnirudh Ghayal <aghayal@codeaurora.org>
parent fa6d1e8f

Documentation/devicetree/bindings/regulator/cpr-regulator.txt

+3 −0
Original line number Diff line number Diff line
@@ -511,6 +511,9 @@ Optional properties: 
				greater than all of the real row numbers addressed in other properties of

				the cpr-regulator device node.  This property is required if

				qcom,fuse-remap-source is specified.

- qcom,cpr-quot-min-diff:	Integer which defines the minimum target-quotient difference between

				the highest and (highest - 1) fuse corner to keep CPR enabled. If this

				property is not specified a default value of 50 is used.



Example:

	apc_vreg_corner: regulator@f9018000 {

drivers/regulator/cpr-regulator.c

+6 −1
Original line number Diff line number Diff line
@@ -2882,12 +2882,17 @@ static int cpr_init_cpr_efuse(struct platform_device *pdev, 
		 */

		int *quot = cpr_vreg->cpr_fuse_target_quot;

		int highest_fuse_corner = cpr_vreg->num_fuse_corners;

		u32 min_diff_quot;

		bool valid_fuse = true;



		min_diff_quot = CPR_FUSE_MIN_QUOT_DIFF;

		of_property_read_u32(of_node, "qcom,cpr-quot-min-diff",

							&min_diff_quot);



		if (quot[highest_fuse_corner] > quot[highest_fuse_corner - 1]) {

			if ((quot[highest_fuse_corner]

				- quot[highest_fuse_corner - 1])

					<= CPR_FUSE_MIN_QUOT_DIFF)

					<= min_diff_quot)

				valid_fuse = false;

		} else {

			valid_fuse = false;