ARM: tegra: apalis/colibri t30: fix on-module 5v0 supplies

Working on Gigabit/PCIe support in U-Boot for Apalis T30 I realised
that the current device tree source includes for our modules only
happen to work due to referencing the on-carrier 5v0 supply from USB
which is not at all available on-module. The modules actually contain
TPS60150 charge pumps to generate the PMIC required 5 volts from the
one and only 3.3 volt module supply. This patch fixes this.

(Note: When back-porting this to v3.16 stable releases, simply drop the
change to tegra30-apalis.dtsi; that file was added in v3.17)

Cc: <stable@vger.kernel.org> #v3.16+
Signed-off-by: Marcel Ziswiler <marcel@ziswiler.com>
Signed-off-by: Stephen Warren <swarren@nvidia.com>
Signed-off-by: Olof Johansson <olof@lixom.net>

diff --git a/arch/arm/boot/dts/tegra30-apalis.dtsi b/arch/arm/boot/dts/tegra30-apalis.dtsi
index 8adaa78..a5446cb 100644 (file)
--- a/arch/arm/boot/dts/tegra30-apalis.dtsi
+++ b/arch/arm/boot/dts/tegra30-apalis.dtsi
@@ -423,7 +423,7 @@
                        vcc4-supply = <&sys_3v3_reg>;
                        vcc5-supply = <&sys_3v3_reg>;
                        vcc6-supply = <&vio_reg>;
-                       vcc7-supply = <&sys_5v0_reg>;
+                       vcc7-supply = <&charge_pump_5v0_reg>;
                        vccio-supply = <&sys_3v3_reg>;
 
                        regulators {
@@ -674,5 +674,14 @@
                        regulator-max-microvolt = <3300000>;
                        regulator-always-on;
                };
+
+               charge_pump_5v0_reg: regulator@101 {
+                       compatible = "regulator-fixed";
+                       reg = <101>;
+                       regulator-name = "5v0";
+                       regulator-min-microvolt = <5000000>;
+                       regulator-max-microvolt = <5000000>;
+                       regulator-always-on;
+               };
        };
 };

diff --git a/arch/arm/boot/dts/tegra30-colibri.dtsi b/arch/arm/boot/dts/tegra30-colibri.dtsi
index bf16f8e..c4ed1be 100644 (file)
--- a/arch/arm/boot/dts/tegra30-colibri.dtsi
+++ b/arch/arm/boot/dts/tegra30-colibri.dtsi
@@ -201,7 +201,7 @@
                        vcc4-supply = <&sys_3v3_reg>;
                        vcc5-supply = <&sys_3v3_reg>;
                        vcc6-supply = <&vio_reg>;
-                       vcc7-supply = <&sys_5v0_reg>;
+                       vcc7-supply = <&charge_pump_5v0_reg>;
                        vccio-supply = <&sys_3v3_reg>;
 
                        regulators {
@@ -373,5 +373,14 @@
                        regulator-max-microvolt = <3300000>;
                        regulator-always-on;
                };
+
+               charge_pump_5v0_reg: regulator@101 {
+                       compatible = "regulator-fixed";
+                       reg = <101>;
+                       regulator-name = "5v0";
+                       regulator-min-microvolt = <5000000>;
+                       regulator-max-microvolt = <5000000>;
+                       regulator-always-on;
+               };
        };
 };