arm64: dts: qcom: qcm6490-fairphone-fp5: Enable UFS

Enable the UFS phy and controller so that we can access the internal
storage of the phone.

At the same time we need to bump the minimum voltage used for UFS VCC,
otherwise it doesn't initialize properly. The 2.952V is taken from the
vcc-voltage-level property downstream.

See also the following link for more information about the VCCQ/VCCQ2:
https://gerrit-public.fairphone.software/plugins/gitiles/kernel/msm-extra/devicetree/+/1590a3739e7dc29d2597307881553236d492f188/fp5/yupik-idp-pm7250b.dtsi#207

Signed-off-by: Luca Weiss <[email protected]>
Reviewed-by: Konrad Dybcio <[email protected]>
Link: https://lore.kernel.org/r/[email protected]
Signed-off-by: Bjorn Andersson <[email protected]>

arch/arm64/boot/dts/qcom/qcm6490-fairphone-fp5.dts

@@ -284,8 +284,9 @@
 		};
 
 		vreg_l7b: ldo7 {
-			regulator-min-microvolt = <2400000>;
-			regulator-max-microvolt = <3544000>;
+			/* Constrained for UFS VCC, at least until UFS driver scales voltage */
+			regulator-min-microvolt = <2952000>;
+			regulator-max-microvolt = <2952000>;
 			regulator-initial-mode = <RPMH_REGULATOR_MODE_HPM>;
 		};
 
@@ -853,6 +854,28 @@
 	};
 };
 
+&ufs_mem_hc {
+	reset-gpios = <&tlmm 175 GPIO_ACTIVE_LOW>;
+
+	vcc-supply = <&vreg_l7b>;
+	vcc-max-microamp = <800000>;
+	/*
+	 * Technically l9b enables an eLDO (supplied by s1b) which then powers
+	 * VCCQ2 of the UFS.
+	 */
+	vccq-supply = <&vreg_l9b>;
+	vccq-max-microamp = <900000>;
+
+	status = "okay";
+};
+
+&ufs_mem_phy {
+	vdda-phy-supply = <&vreg_l10c>;
+	vdda-pll-supply = <&vreg_l6b>;
+
+	status = "okay";
+};
+
 &usb_1 {
 	status = "okay";
 };