ARM: dt: tegra: seaboard: add regulators

Seaboard uses a TPS6586x regulator. Instantiate this, and hook up a
couple of fixed GPIO-controlled regulators too.

Two data sources were used for the data encoded here:
* The HW defaults, as extracted from real HW.
* The schematic, which specifies a voltage for each LDO rail.

In most cases these sources matched. The only differences is:

ldo6: The HW default on Springbank is 2.85v. The HW default on Seaboard
is 1.8v. The schematics for both Springbank and Seaboard match at 2.85v.
However, internal research indicates that the schematics are incorrectly
labelled, and 1.8v is correct. The ChromeOS kernel also uses 1.8v.

Note that these settings don't entirely match those in the ChromeOS
kernel found at the URL below. However, the selected values generally
cause no behavior change in the kernel, and so were picked to avoid
regressions.

repo http://git.chromium.org/chromiumos/third_party/kernel.git
branch chromeos-3.2
file arch/arm/mach-tegra/board-seaboard-power.c

Portions based on work by Laxman Dewangan <ldewangan@nvidia.com>

Signed-off-by: Stephen Warren <swarren@nvidia.com>

diff --git a/arch/arm/boot/dts/tegra20-seaboard.dts b/arch/arm/boot/dts/tegra20-seaboard.dts
index 85e621ab2968d2947bf0b6dac96a305d5afbf614..92deb36ae03cd0a4f0dc6bbc02c9429ebb94d74c 100644 (file)
--- a/arch/arm/boot/dts/tegra20-seaboard.dts
+++ b/arch/arm/boot/dts/tegra20-seaboard.dts
@@ -374,6 +374,152 @@
                status = "okay";
                clock-frequency = <400000>;
 
+               pmic: tps6586x@34 {
+                       compatible = "ti,tps6586x";
+                       reg = <0x34>;
+                       interrupts = <0 86 0x4>;
+
+                       #gpio-cells = <2>;
+                       gpio-controller;
+
+                       sys-supply = <&vdd_5v0_reg>;
+                       vin-sm0-supply = <&sys_reg>;
+                       vin-sm1-supply = <&sys_reg>;
+                       vin-sm2-supply = <&sys_reg>;
+                       vinldo01-supply = <&sm2_reg>;
+                       vinldo23-supply = <&sm2_reg>;
+                       vinldo4-supply = <&sm2_reg>;
+                       vinldo678-supply = <&sm2_reg>;
+                       vinldo9-supply = <&sm2_reg>;
+
+                       regulators {
+                               #address-cells = <1>;
+                               #size-cells = <0>;
+
+                               sys_reg: regulator@0 {
+                                       reg = <0>;
+                                       regulator-compatible = "sys";
+                                       regulator-name = "vdd_sys";
+                                       regulator-always-on;
+                               };
+
+                               regulator@1 {
+                                       reg = <1>;
+                                       regulator-compatible = "sm0";
+                                       regulator-name = "vdd_sm0,vdd_core";
+                                       regulator-min-microvolt = <1300000>;
+                                       regulator-max-microvolt = <1300000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@2 {
+                                       reg = <2>;
+                                       regulator-compatible = "sm1";
+                                       regulator-name = "vdd_sm1,vdd_cpu";
+                                       regulator-min-microvolt = <1125000>;
+                                       regulator-max-microvolt = <1125000>;
+                                       regulator-always-on;
+                               };
+
+                               sm2_reg: regulator@3 {
+                                       reg = <3>;
+                                       regulator-compatible = "sm2";
+                                       regulator-name = "vdd_sm2,vin_ldo*";
+                                       regulator-min-microvolt = <3700000>;
+                                       regulator-max-microvolt = <3700000>;
+                                       regulator-always-on;
+                               };
+
+                               /* LDO0 is not connected to anything */
+
+                               regulator@5 {
+                                       reg = <5>;
+                                       regulator-compatible = "ldo1";
+                                       regulator-name = "vdd_ldo1,avdd_pll*";
+                                       regulator-min-microvolt = <1100000>;
+                                       regulator-max-microvolt = <1100000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@6 {
+                                       reg = <6>;
+                                       regulator-compatible = "ldo2";
+                                       regulator-name = "vdd_ldo2,vdd_rtc";
+                                       regulator-min-microvolt = <1200000>;
+                                       regulator-max-microvolt = <1200000>;
+                               };
+
+                               regulator@7 {
+                                       reg = <7>;
+                                       regulator-compatible = "ldo3";
+                                       regulator-name = "vdd_ldo3,avdd_usb*";
+                                       regulator-min-microvolt = <3300000>;
+                                       regulator-max-microvolt = <3300000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@8 {
+                                       reg = <8>;
+                                       regulator-compatible = "ldo4";
+                                       regulator-name = "vdd_ldo4,avdd_osc,vddio_sys";
+                                       regulator-min-microvolt = <1800000>;
+                                       regulator-max-microvolt = <1800000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@9 {
+                                       reg = <9>;
+                                       regulator-compatible = "ldo5";
+                                       regulator-name = "vdd_ldo5,vcore_mmc";
+                                       regulator-min-microvolt = <2850000>;
+                                       regulator-max-microvolt = <2850000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@10 {
+                                       reg = <10>;
+                                       regulator-compatible = "ldo6";
+                                       regulator-name = "vdd_ldo6,avdd_vdac,vddio_vi,vddio_cam";
+                                       regulator-min-microvolt = <1800000>;
+                                       regulator-max-microvolt = <1800000>;
+                               };
+
+                               regulator@11 {
+                                       reg = <11>;
+                                       regulator-compatible = "ldo7";
+                                       regulator-name = "vdd_ldo7,avdd_hdmi,vdd_fuse";
+                                       regulator-min-microvolt = <3300000>;
+                                       regulator-max-microvolt = <3300000>;
+                               };
+
+                               regulator@12 {
+                                       reg = <12>;
+                                       regulator-compatible = "ldo8";
+                                       regulator-name = "vdd_ldo8,avdd_hdmi_pll";
+                                       regulator-min-microvolt = <1800000>;
+                                       regulator-max-microvolt = <1800000>;
+                               };
+
+                               regulator@13 {
+                                       reg = <13>;
+                                       regulator-compatible = "ldo9";
+                                       regulator-name = "vdd_ldo9,avdd_2v85,vdd_ddr_rx";
+                                       regulator-min-microvolt = <2850000>;
+                                       regulator-max-microvolt = <2850000>;
+                                       regulator-always-on;
+                               };
+
+                               regulator@14 {
+                                       reg = <14>;
+                                       regulator-compatible = "ldo_rtc";
+                                       regulator-name = "vdd_rtc_out,vdd_cell";
+                                       regulator-min-microvolt = <3300000>;
+                                       regulator-max-microvolt = <3300000>;
+                                       regulator-always-on;
+                               };
+                       };
+               };
+
                temperature-sensor@4c {
                        compatible = "nct1008";
                        reg = <0x4c>;
@@ -387,6 +533,10 @@
                };
        };
 
+       pmc {
+               nvidia,invert-interrupt;
+       };
+
        memory-controller@0x7000f400 {
                emc-table@190000 {
                        reg = <190000>;
@@ -473,6 +623,40 @@
                };
        };
 
+       regulators {
+               compatible = "simple-bus";
+               #address-cells = <1>;
+               #size-cells = <0>;
+
+               vdd_5v0_reg: regulator@0 {
+                       compatible = "regulator-fixed";
+                       reg = <0>;
+                       regulator-name = "vdd_5v0";
+                       regulator-min-microvolt = <5000000>;
+                       regulator-max-microvolt = <5000000>;
+                       regulator-always-on;
+               };
+
+               regulator@1 {
+                       compatible = "regulator-fixed";
+                       reg = <1>;
+                       regulator-name = "vdd_1v5";
+                       regulator-min-microvolt = <1500000>;
+                       regulator-max-microvolt = <1500000>;
+                       gpio = <&pmic 0 0>;
+               };
+
+               regulator@2 {
+                       compatible = "regulator-fixed";
+                       reg = <2>;
+                       regulator-name = "vdd_1v2";
+                       regulator-min-microvolt = <1200000>;
+                       regulator-max-microvolt = <1200000>;
+                       gpio = <&pmic 1 0>;
+                       enable-active-high;
+               };
+       };
+
        sound {
                compatible = "nvidia,tegra-audio-wm8903-seaboard",
                             "nvidia,tegra-audio-wm8903";