ARM: dts: OMAP3: use twl4030 vdd1 regulator for CPU

Define VDD1 regulator in twl4030 DT and mark it as the supply for the
various OMAP34xx/35xx/36xx/37xx platforms (all use TWL4030 variants with
VDD1 supplying the CPU).

NOTE: This currently will use I2C1 bus communication path to set the
voltage in device tree boot. In the legacy non device tree boot, we
continue to use twl-common.c which bypasses I2C1 bus communication path
and uses I2C4 bus path using OMAP voltage libraries. We should
eventually be able to use I2C4 path once we have voltage regulator for
OMAP which is capable of using the voltage controller/voltage processor
IP blocks.

Signed-off-by: Nishanth Menon <nm@ti.com>
Cc: Kevin Hilman <khilman@deeprootsystems.com>
Cc: Jon Hunter <jon-hunter@ti.com>
Cc: Santosh Shilimkar <santosh.shilimkar@ti.com>
Cc: Shawn Guo <shawn.guo@linaro.org>
Cc: Keerthy <j-keerthy@ti.com>
Signed-off-by: Benoit Cousson <benoit.cousson@linaro.org>

diff --git a/arch/arm/boot/dts/omap3-beagle-xm.dts b/arch/arm/boot/dts/omap3-beagle-xm.dts
index 1177ff63334a8ee0475f67379cd2d7822a67f03f..5a31964ae3396e0fa34ad632003ad8d1306f355b 100644 (file)
--- a/arch/arm/boot/dts/omap3-beagle-xm.dts
+++ b/arch/arm/boot/dts/omap3-beagle-xm.dts
@@ -13,6 +13,12 @@
        model = "TI OMAP3 BeagleBoard xM";
        compatible = "ti,omap3-beagle-xm, ti,omap3-beagle", "ti,omap3";
 
+       cpus {
+               cpu@0 {
+                       cpu0-supply = <&vcc>;
+               };
+       };
+
        memory {
                device_type = "memory";
                reg = <0x80000000 0x20000000>; /* 512 MB */

diff --git a/arch/arm/boot/dts/omap3-beagle.dts b/arch/arm/boot/dts/omap3-beagle.dts
index 2231f29ec54f66cf3263d3ec0438503aa647a09f..6eec69997607563e948575ade339b4f1aef3fd2b 100644 (file)
--- a/arch/arm/boot/dts/omap3-beagle.dts
+++ b/arch/arm/boot/dts/omap3-beagle.dts
@@ -13,6 +13,12 @@
        model = "TI OMAP3 BeagleBoard";
        compatible = "ti,omap3-beagle", "ti,omap3";
 
+       cpus {
+               cpu@0 {
+                       cpu0-supply = <&vcc>;
+               };
+       };
+
        memory {
                device_type = "memory";
                reg = <0x80000000 0x10000000>; /* 256 MB */

diff --git a/arch/arm/boot/dts/omap3-evm.dts b/arch/arm/boot/dts/omap3-evm.dts
index f14370e6f0e8f0326e3aa9951063ba74312cd500..05f51e10ddd6730fcccc83a594f74cb550e7f181 100644 (file)
--- a/arch/arm/boot/dts/omap3-evm.dts
+++ b/arch/arm/boot/dts/omap3-evm.dts
@@ -13,6 +13,12 @@
        model = "TI OMAP3 EVM (OMAP3530, AM/DM37x)";
        compatible = "ti,omap3-evm", "ti,omap3";
 
+       cpus {
+               cpu@0 {
+                       cpu0-supply = <&vcc>;
+               };
+       };
+
        memory {
                device_type = "memory";
                reg = <0x80000000 0x10000000>; /* 256 MB */

diff --git a/arch/arm/boot/dts/twl4030.dtsi b/arch/arm/boot/dts/twl4030.dtsi
index 23c0cdd6172b98da54bc8080c25ab209e2decac9..b3034da00a37bfe6a5361420bc2fb8d99101fb5a 100644 (file)
--- a/arch/arm/boot/dts/twl4030.dtsi
+++ b/arch/arm/boot/dts/twl4030.dtsi
@@ -23,6 +23,12 @@
                compatible = "ti,twl4030-wdt";
        };
 
+       vcc: regulator-vdd1 {
+               compatible = "ti,twl4030-vdd1";
+               regulator-min-microvolt = <600000>;
+               regulator-max-microvolt = <1450000>;
+       };
+
        vdac: regulator-vdac {
                compatible = "ti,twl4030-vdac";
                regulator-min-microvolt = <1800000>;