From 5c47a46d5e942ea6b041c8b7727b201817c1ff76 Mon Sep 17 00:00:00 2001 From: Christian Marangi Date: Thu, 7 Jul 2022 03:09:37 +0200 Subject: [PATCH 3/8] ARM: dts: qcom: ipq8064: add specific dtsi with smb208 rpm regulators Add specific ipq8064 dtsi with smb208 rpm regulators. Qcom advise to use this configuration but it's not mandatory and OEM can decide to implement their own regulators. smb208 regulators are used to scale CPU voltage, L2 cache voltage and Ubi32 cores. There regulators are controlled by rpm and to correctly works gsbi4-i2c require to be NEVER disabled or rpm will reject any regulator change request. Signed-off-by: Christian Marangi Tested-by: Jonathan McDowell Signed-off-by: Bjorn Andersson Link: https://lore.kernel.org/r/20220707010943.20857-4-ansuelsmth@gmail.com --- arch/arm/boot/dts/qcom-ipq8064-smb208.dtsi | 37 ++++++++++++++++++++++ 1 file changed, 37 insertions(+) create mode 100644 arch/arm/boot/dts/qcom-ipq8064-smb208.dtsi --- /dev/null +++ b/arch/arm/boot/dts/qcom-ipq8064-smb208.dtsi @@ -0,0 +1,37 @@ +// SPDX-License-Identifier: GPL-2.0 + +#include "qcom-ipq8064.dtsi" + +&rpm { + smb208_regulators: regulators { + compatible = "qcom,rpm-smb208-regulators"; + + smb208_s1a: s1a { + regulator-min-microvolt = <1050000>; + regulator-max-microvolt = <1150000>; + + qcom,switch-mode-frequency = <1200000>; + }; + + smb208_s1b: s1b { + regulator-min-microvolt = <1050000>; + regulator-max-microvolt = <1150000>; + + qcom,switch-mode-frequency = <1200000>; + }; + + smb208_s2a: s2a { + regulator-min-microvolt = < 800000>; + regulator-max-microvolt = <1250000>; + + qcom,switch-mode-frequency = <1200000>; + }; + + smb208_s2b: s2b { + regulator-min-microvolt = < 800000>; + regulator-max-microvolt = <1250000>; + + qcom,switch-mode-frequency = <1200000>; + }; + }; +};