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ARM: dts: imx: ventana: add LTC3676 PMIC support
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All of the Gateworks Ventana boards based on the IMX6 SoC except for the
GW54xx use the LTC3676 PMIC. Add a device-tree node with interrupt support
for this PMIC. Additionally remove the simple-bus notation in the regulator
nodes and any fixed regulators that are provided by the PMIC.

Signed-off-by: Tim Harvey <[email protected]>
Signed-off-by: Shawn Guo <[email protected]>
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Gateworks authored and Shawn Guo committed Jan 2, 2017
1 parent b0a5c46 commit 5051bff
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Showing 6 changed files with 630 additions and 190 deletions.
132 changes: 102 additions & 30 deletions arch/arm/boot/dts/imx6qdl-gw51xx.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -56,38 +56,29 @@
status = "okay";
};

regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;

reg_3p3v: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};

reg_5p0v: regulator@1 {
compatible = "regulator-fixed";
reg = <1>;
regulator-name = "5P0V";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
reg_5p0v: regulator-5p0v {
compatible = "regulator-fixed";
regulator-name = "5P0V";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};

reg_usb_otg_vbus: regulator@2 {
compatible = "regulator-fixed";
reg = <2>;
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_usb_otg_vbus: regulator-usb-otg-vbus {
compatible = "regulator-fixed";
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
};

Expand Down Expand Up @@ -158,6 +149,81 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";

ltc3676: pmic@3c {
compatible = "lltc,ltc3676";
reg = <0x3c>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pmic>;
interrupt-parent = <&gpio1>;
interrupts = <8 IRQ_TYPE_EDGE_FALLING>;

regulators {
/* VDD_SOC (1+R1/R2 = 1.635) */
reg_vdd_soc: sw1 {
regulator-name = "vddsoc";
regulator-min-microvolt = <674400>;
regulator-max-microvolt = <1308000>;
lltc,fb-voltage-divider = <127000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_1P8 (1+R1/R2 = 2.505): GPS/VideoIn/ENET-PHY */
reg_1p8v: sw2 {
regulator-name = "vdd1p8";
regulator-min-microvolt = <1033310>;
regulator-max-microvolt = <2004000>;
lltc,fb-voltage-divider = <301000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_ARM (1+R1/R2 = 1.635) */
reg_vdd_arm: sw3 {
regulator-name = "vddarm";
regulator-min-microvolt = <674400>;
regulator-max-microvolt = <1308000>;
lltc,fb-voltage-divider = <127000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_DDR (1+R1/R2 = 2.105) */
reg_vdd_ddr: sw4 {
regulator-name = "vddddr";
regulator-min-microvolt = <868310>;
regulator-max-microvolt = <1684000>;
lltc,fb-voltage-divider = <221000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_2P5 (1+R1/R2 = 3.435): PCIe/ENET-PHY */
reg_2p5v: ldo2 {
regulator-name = "vdd2p5";
regulator-min-microvolt = <2490375>;
regulator-max-microvolt = <2490375>;
lltc,fb-voltage-divider = <487000 200000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_HIGH (1+R1/R2 = 4.17) */
reg_3p0v: ldo4 {
regulator-name = "vdd3p0";
regulator-min-microvolt = <3023250>;
regulator-max-microvolt = <3023250>;
lltc,fb-voltage-divider = <634000 200000>;
regulator-boot-on;
regulator-always-on;
};
};
};
};

&i2c3 {
Expand Down Expand Up @@ -312,6 +378,12 @@
>;
};

pinctrl_pmic: pmicgrp {
fsl,pins = <
MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0001b0b0 /* PMIC_IRQ# */
>;
};

pinctrl_pps: ppsgrp {
fsl,pins = <
MX6QDL_PAD_ENET_RXD1__GPIO1_IO26 0x1b0b1
Expand Down
165 changes: 117 additions & 48 deletions arch/arm/boot/dts/imx6qdl-gw52xx.dtsi
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Original file line number Diff line number Diff line change
Expand Up @@ -71,57 +71,37 @@
status = "okay";
};

regulators {
compatible = "simple-bus";
#address-cells = <1>;
#size-cells = <0>;

reg_1p0v: regulator@0 {
compatible = "regulator-fixed";
reg = <0>;
regulator-name = "1P0V";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-always-on;
};

/* remove this fixed regulator once ltc3676__sw2 driver available */
reg_1p8v: regulator@1 {
compatible = "regulator-fixed";
reg = <1>;
regulator-name = "1P8V";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-always-on;
};
reg_1p0v: regulator-1p0v {
compatible = "regulator-fixed";
regulator-name = "1P0V";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-always-on;
};

reg_3p3v: regulator@2 {
compatible = "regulator-fixed";
reg = <2>;
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};
reg_3p3v: regulator-3p3v {
compatible = "regulator-fixed";
regulator-name = "3P3V";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-always-on;
};

reg_5p0v: regulator@3 {
compatible = "regulator-fixed";
reg = <3>;
regulator-name = "5P0V";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};
reg_5p0v: regulator-5p0v {
compatible = "regulator-fixed";
regulator-name = "5P0V";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
regulator-always-on;
};

reg_usb_otg_vbus: regulator@4 {
compatible = "regulator-fixed";
reg = <4>;
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};
reg_usb_otg_vbus: regulator-usb-otg-vbus {
compatible = "regulator-fixed";
regulator-name = "usb_otg_vbus";
regulator-min-microvolt = <5000000>;
regulator-max-microvolt = <5000000>;
gpio = <&gpio3 22 GPIO_ACTIVE_HIGH>;
enable-active-high;
};

sound {
Expand Down Expand Up @@ -233,6 +213,89 @@
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_i2c2>;
status = "okay";

ltc3676: pmic@3c {
compatible = "lltc,ltc3676";
reg = <0x3c>;
pinctrl-names = "default";
pinctrl-0 = <&pinctrl_pmic>;
interrupt-parent = <&gpio1>;
interrupts = <8 IRQ_TYPE_EDGE_FALLING>;

regulators {
/* VDD_SOC (1+R1/R2 = 1.635) */
reg_vdd_soc: sw1 {
regulator-name = "vddsoc";
regulator-min-microvolt = <674400>;
regulator-max-microvolt = <1308000>;
lltc,fb-voltage-divider = <127000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_1P8 (1+R1/R2 = 2.505): GPS/VideoIn/ENET-PHY */
reg_1p8v: sw2 {
regulator-name = "vdd1p8";
regulator-min-microvolt = <1033310>;
regulator-max-microvolt = <2004000>;
lltc,fb-voltage-divider = <301000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_ARM (1+R1/R2 = 1.635) */
reg_vdd_arm: sw3 {
regulator-name = "vddarm";
regulator-min-microvolt = <674400>;
regulator-max-microvolt = <1308000>;
lltc,fb-voltage-divider = <127000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_DDR (1+R1/R2 = 2.105) */
reg_vdd_ddr: sw4 {
regulator-name = "vddddr";
regulator-min-microvolt = <868310>;
regulator-max-microvolt = <1684000>;
lltc,fb-voltage-divider = <221000 200000>;
regulator-ramp-delay = <7000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_2P5 (1+R1/R2 = 3.435): PCIe/ENET-PHY */
reg_2p5v: ldo2 {
regulator-name = "vdd2p5";
regulator-min-microvolt = <2490375>;
regulator-max-microvolt = <2490375>;
lltc,fb-voltage-divider = <487000 200000>;
regulator-boot-on;
regulator-always-on;
};

/* VDD_AUD_1P8: Audio codec */
reg_aud_1p8v: ldo3 {
regulator-name = "vdd1p8";
regulator-min-microvolt = <1800000>;
regulator-max-microvolt = <1800000>;
regulator-boot-on;
};

/* VDD_HIGH (1+R1/R2 = 4.17) */
reg_3p0v: ldo4 {
regulator-name = "vdd3p0";
regulator-min-microvolt = <3023250>;
regulator-max-microvolt = <3023250>;
lltc,fb-voltage-divider = <634000 200000>;
regulator-boot-on;
regulator-always-on;
};
};
};
};

&i2c3 {
Expand Down Expand Up @@ -467,6 +530,12 @@
>;
};

pinctrl_pmic: pmicgrp {
fsl,pins = <
MX6QDL_PAD_GPIO_8__GPIO1_IO08 0x0001b0b0 /* PMIC_IRQ# */
>;
};

pinctrl_pps: ppsgrp {
fsl,pins = <
MX6QDL_PAD_ENET_RXD1__GPIO1_IO26 0x1b0b1
Expand Down
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