arm64: dts: qcom: ipq9574: Add SMPA1 regulator node

Add support for SMPA1 regulator node in IPQ9574.

Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
Co-developed-by: Praveenkumar I <quic_ipkumar@quicinc.com>
Signed-off-by: Praveenkumar I <quic_ipkumar@quicinc.com>
Signed-off-by: Devi Priya <quic_devipriy@quicinc.com>
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
Link: https://lore.kernel.org/r/20230517172527.1968-3-quic_devipriy@quicinc.com

diff --git a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
index 2ce8e09..2b3ed8d 100644 (file)
--- a/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
+++ b/arch/arm64/boot/dts/qcom/ipq9574-rdp433.dts
@@ -29,6 +29,25 @@
        status = "okay";
 };
 
+&rpm_requests {
+       regulators {
+               compatible = "qcom,rpm-mp5496-regulators";
+
+               ipq9574_s1: s1 {
+               /*
+                * During kernel bootup, the SoC runs at 800MHz with 875mV set by the bootloaders.
+                * During regulator registration, kernel not knowing the initial voltage,
+                * considers it as zero and brings up the regulators with minimum supported voltage.
+                * Update the regulator-min-microvolt with SVS voltage of 725mV so that
+                * the regulators are brought up with 725mV which is sufficient for all the
+                * corner parts to operate at 800MHz
+                */
+                       regulator-min-microvolt = <725000>;
+                       regulator-max-microvolt = <1075000>;
+               };
+       };
+};
+
 &sdhc_1 {
        pinctrl-0 = <&sdc_default_state>;
        pinctrl-names = "default";