regulator: qcom_spmi: Add support for pmi8994

Document the regulators available on pmi8994 and add support for
this PMIC to the SPMI PMIC regulator driver.

Signed-off-by: Rajendra Nayak <[e-mail]>
Signed-off-by: Mark Brown <[e-mail]>

Documentation/devicetree/bindings/regulator/qcom,spmi-regulator.txt

···
 			"qcom,pm8916-regulators"
 			"qcom,pm8941-regulators"
 			"qcom,pm8994-regulators"
+			"qcom,pmi8994-regulators"
 
 - interrupts:
 	Usage: optional
···
 	Definition: Reference to regulator supplying the input pin, as
 		    described in the data sheet.
 
+- vdd_s1-supply:
+- vdd_s2-supply:
+- vdd_s3-supply:
+- vdd_l1-supply:
+	Usage: optional (pmi8994 only)
+	Value type: <phandle>
+	Definition: Reference to regulator supplying the input pin, as
+		    described in the data sheet.
+
 
 The regulator node houses sub-nodes for each regulator within the device. Each
 sub-node is identified using the node's name, with valid values listed for each
···
 	s1, s2, s3, s4, s5, s6, s7, s8, s9, s10, s11, s12, l1, l2, l3, l4, l5,
 	l6, l7, l8, l9, l10, l11, l12, l13, l14, l15, l16, l17, l18, l19, l20,
 	l21, l22, l23, l24, l25, l26, l27, l28, l29, l30, l31, l32, lvs1, lvs2
+
+pmi8994:
+	s1, s2, s3, l1
 
 The content of each sub-node is defined by the standard binding for regulators -
 see regulator.txt - with additional custom properties described below:

drivers/regulator/qcom_spmi-regulator.c

···
 	{ }
 };
 
+static const struct spmi_regulator_data pmi8994_regulators[] = {
+	{ "s1", 0x1400, "vdd_s1", },
+	{ "s2", 0x1700, "vdd_s2", },
+	{ "s3", 0x1a00, "vdd_s3", },
+	{ "l1", 0x4000, "vdd_l1", },
+        { }
+};
+
 static const struct of_device_id qcom_spmi_regulator_match[] = {
 	{ .compatible = "qcom,pm8841-regulators", .data = &pm8841_regulators },
 	{ .compatible = "qcom,pm8916-regulators", .data = &pm8916_regulators },
 	{ .compatible = "qcom,pm8941-regulators", .data = &pm8941_regulators },
 	{ .compatible = "qcom,pm8994-regulators", .data = &pm8994_regulators },
+	{ .compatible = "qcom,pmi8994-regulators", .data = &pmi8994_regulators },
 	{ }
 };
 MODULE_DEVICE_TABLE(of, qcom_spmi_regulator_match);