leandrof/u-boot
1
0
Fork 0
Code Issues Pull Requests Packages Projects Releases Wiki Activity

ARM: zynq: DT: Add a fixed regulator for CPU voltage

Browse Source 
To silence the warning
   cpufreq_cpu0: failed to get cpu0 regulator: -19
from the cpufreq driver regarding a missing regulator,
add a fixed regulator to the DT.
Zynq does not support voltage scaling and the CPU rail should always be
supplied with 1 V, hence it is added in the SOC-level dtsi.

Signed-off-by: Soren Brinkmann <soren.brinkmann@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
This commit is contained in:
Michal Simek 2015-07-22 10:38:45 +02:00
parent fb1a5061f0
commit bece06ce0c
1 changed files with 10 additions and 0 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
arch/arm/dts/zynq-7000.dtsi
View File

@ -21,6 +21,7 @@
reg = <0>;
clocks = <&clkc 3>;
clock-latency = <1000>;
cpu0-supply = <&regulator_vccpint>;
operating-points = <
/* kHz uV */
666667 1000000
@ -44,6 +45,15 @@
reg = < 0xf8891000 0x1000 0xf8893000 0x1000 >;
};
regulator_vccpint: fixedregulator@0 {
compatible = "regulator-fixed";
regulator-name = "VCCPINT";
regulator-min-microvolt = <1000000>;
regulator-max-microvolt = <1000000>;
regulator-boot-on;
regulator-always-on;
};
amba {
compatible = "simple-bus";
#address-cells = <1>;