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Date: Thu, 26 Feb 2015 16:16:14 -0800
From: Stephen Boyd <sboyd@...eaurora.org>
To: Bjorn Andersson <bjorn.andersson@...ymobile.com>
CC: Bjorn Andersson <bjorn@...o.se>,
Andy Gross <agross@...eaurora.org>,
Rob Herring <robh+dt@...nel.org>,
Pawel Moll <pawel.moll@....com>,
Mark Brown <broonie@...aro.org>,
Mark Rutland <mark.rutland@....com>,
Ian Campbell <ijc+devicetree@...lion.org.uk>,
Kumar Gala <galak@...eaurora.org>,
Lee Jones <lee.jones@...aro.org>,
Srinivas Kandagatla <srinivas.kandagatla@...aro.org>,
"devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
"linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
"linux-arm-msm@...r.kernel.org" <linux-arm-msm@...r.kernel.org>
Subject: Re: [PATCH] regulator: qcom-rpm: Rework for single device
On 02/26/15 16:00, Stephen Boyd wrote:
> The RPM regulators are not individual devices. Creating platform
> devices for each regulator bloats the kernel's runtime memory
> footprint by ~12k. Let's rework this driver to be a single
> platform device for all the RPM regulators. This makes the
> DT match the schematic/datasheet closer too because now the
> regulators node contains a list of supplies at the package level
> for a particular PMIC model.
>
> Signed-off-by: Stephen Boyd <sboyd@...eaurora.org>
> ---
>
This is the RPM node I used for testing so you can see the resulting DT.
rpm@...000 {
compatible = "qcom,rpm-apq8064";
reg = <0x108000 0x1000>;
qcom,ipc = <&l2cc 0x8 2>;
interrupts = <0 19 0>, <0 21 0>, <0 22 0>;
interrupt-names = "ack", "err", "wakeup";
regulators {
compatible = "qcom,rpm-pm8921-regulators";
vin_l1_l2_l12_l18-supply = <&pm8921_s4>;
vin_lvs_1_3_6-supply = <&pm8921_s4>;
vin_lvs_4_5_7-supply = <&pm8921_s4>;
vin_ncp-supply = <&pm8921_l6>;
vin_lvs2-supply = <&pm8921_s4>;
vin_l24-supply = <&pm8921_s1>;
vin_l25-supply = <&pm8921_s1>;
vin_l27-supply = <&pm8921_s7>;
vin_l28-supply = <&pm8921_s7>;
/* Buck SMPS */
pm8921_s1: s1 {
regulator-always-on;
regulator-min-microvolt = <1225000>;
regulator-max-microvolt = <1225000>;
qcom,switch-mode-frequency = <3200000>;
bias-pull-down;
};
pm8921_s2: s2 {
regulator-min-microvolt = <1300000>;
regulator-max-microvolt = <1300000>;
qcom,switch-mode-frequency = <1600000>;
bias-pull-down;
};
pm8921_s3: s3 {
regulator-min-microvolt = <500000>;
regulator-max-microvolt = <1150000>;
qcom,switch-mode-frequency = <4800000>;
bias-pull-down;
};
pm8921_s4: s4 {
regulator-always-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
qcom,switch-mode-frequency = <1600000>;
bias-pull-down;
qcom,force-mode = <QCOM_RPM_FORCE_MODE_AUTO>;
};
pm8921_s7: s7 {
regulator-min-microvolt = <1300000>;
regulator-max-microvolt = <1300000>;
qcom,switch-mode-frequency = <3200000>;
};
pm8921_s8: s8 {
regulator-min-microvolt = <2200000>;
regulator-max-microvolt = <2200000>;
qcom,switch-mode-frequency = <1600000>;
};
/* PMOS LDO */
pm8921_l1: l1 {
regulator-always-on;
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1100000>;
bias-pull-down;
};
pm8921_l2: l2 {
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
bias-pull-down;
};
pm8921_l3: l3 {
regulator-min-microvolt = <3075000>;
regulator-max-microvolt = <3075000>;
bias-pull-down;
};
pm8921_l4: l4 {
regulator-always-on;
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
bias-pull-down;
};
pm8921_l5: l5 {
regulator-min-microvolt = <2950000>;
regulator-max-microvolt = <2950000>;
bias-pull-down;
};
pm8921_l6: l6 {
regulator-min-microvolt = <2950000>;
regulator-max-microvolt = <2950000>;
bias-pull-down;
};
pm8921_l7: l7 {
regulator-min-microvolt = <1850000>;
regulator-max-microvolt = <2950000>;
bias-pull-down;
};
pm8921_l8: l8 {
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
bias-pull-down;
};
pm8921_l9: l9 {
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
bias-pull-down;
};
pm8921_l10: l10 {
regulator-min-microvolt = <2900000>;
regulator-max-microvolt = <2900000>;
bias-pull-down;
};
pm8921_l11: l11 {
regulator-min-microvolt = <3000000>;
regulator-max-microvolt = <3000000>;
bias-pull-down;
};
pm8921_l12: l12 {
regulator-min-microvolt = <1200000>;
regulator-max-microvolt = <1200000>;
bias-pull-down;
};
/*
pm8921_l13: l13 {
regulator-min-microvolt = <2220000>;
regulator-max-microvolt = <2220000>;
};
*/
pm8921_l14: l14 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
bias-pull-down;
};
pm8921_l15: l15 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <2950000>;
bias-pull-down;
};
pm8921_l16: l16 {
regulator-min-microvolt = <2800000>;
regulator-max-microvolt = <2800000>;
bias-pull-down;
};
pm8921_l17: l17 {
regulator-min-microvolt = <2000000>;
regulator-max-microvolt = <2000000>;
bias-pull-down;
};
pm8921_l18: l18 {
regulator-min-microvolt = <1300000>;
regulator-max-microvolt = <1800000>;
bias-pull-down;
};
pm8921_l21: l21 {
regulator-min-microvolt = <1050000>;
regulator-max-microvolt = <1050000>;
bias-pull-down;
};
pm8921_l22: l22 {
regulator-min-microvolt = <2600000>;
regulator-max-microvolt = <2600000>;
bias-pull-down;
};
pm8921_l23: l23 {
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
bias-pull-down;
};
pm8921_l24: l24 {
regulator-min-microvolt = <750000>;
regulator-max-microvolt = <1150000>;
bias-pull-down;
};
pm8921_l25: l25 {
regulator-always-on;
regulator-min-microvolt = <1250000>;
regulator-max-microvolt = <1250000>;
bias-pull-down;
};
pm8921_l27: l27 {
regulator-min-microvolt = <1100000>;
regulator-max-microvolt = <1100000>;
};
pm8921_l28: l28 {
regulator-min-microvolt = <1050000>;
regulator-max-microvolt = <1050000>;
bias-pull-down;
};
pm8921_l29: l29 {
regulator-min-microvolt = <2000000>;
regulator-max-microvolt = <2000000>;
bias-pull-down;
};
/* Low Voltage Switch */
pm8921_lvs1: lvs1 {
bias-pull-down;
};
pm8921_lvs2: lvs2 {
bias-pull-down;
};
pm8921_lvs3: lvs3 {
bias-pull-down;
};
pm8921_lvs4: lvs4 {
bias-pull-down;
};
pm8921_lvs5: lvs5 {
bias-pull-down;
};
pm8921_lvs6: lvs6 {
bias-pull-down;
};
pm8921_lvs7: lvs7 {
bias-pull-down;
};
pm8921_ncp: ncp {
regulator-min-microvolt = <2000000>;
regulator-max-microvolt = <2000000>;
qcom,switch-mode-frequency = <1600000>;
};
};
};
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