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Commit 6ad501a2 authored by qctecmdr Service's avatar qctecmdr Service Committed by Gerrit - the friendly Code Review server
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Merge "scsi: ufs: obtain VCCQ2 voltage level from DT prior to hard code"

parents 9acb7ee9 047f2cab

Documentation/devicetree/bindings/ufs/ufshcd-pltfrm.txt

+2 −0
Original line number Diff line number Diff line
@@ -27,6 +27,8 @@ Optional properties: 
                          Should be specified in pairs (min, max), units uV.

- vccq-supply           : phandle to VCCQ supply regulator node

- vccq2-supply          : phandle to VCCQ2 supply regulator node

- vccq2-voltage-level   : specifies voltage levels for VCCQ2 supply.

                          Should be specified in pairs (min, max), units uV.

- vcc-supply-1p8        : For embedded UFS devices, valid VCC range is 1.7-1.95V

                          or 2.7-3.6V. This boolean property when set, specifies

			  to use low voltage range of 1.7-1.95V. Note for external

drivers/scsi/ufs/ufshcd-pltfrm.c

+10 −2
Original line number Diff line number Diff line
@@ -202,8 +202,16 @@ static int ufshcd_populate_vreg(struct device *dev, const char *name, 
		vreg->min_uV = UFS_VREG_VCCQ_MIN_UV;

		vreg->max_uV = UFS_VREG_VCCQ_MAX_UV;

	} else if (!strcmp(name, "vccq2")) {

		prop = of_get_property(np, "vccq2-voltage-level", &len);

		if (!prop || (len != (2 * sizeof(__be32)))) {

			dev_warn(dev, "%s vccq2-voltage-level property.\n",

				prop ? "invalid format" : "no");

			vreg->min_uV = UFS_VREG_VCCQ2_MIN_UV;

			vreg->max_uV = UFS_VREG_VCCQ2_MAX_UV;

		} else {

			vreg->min_uV = be32_to_cpup(&prop[0]);

			vreg->max_uV = be32_to_cpup(&prop[1]);

		}

	}



	goto out;