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 ---
Sync with mainline kernel
--- arch/arm/dts/zynq-7000.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+)
diff --git a/arch/arm/dts/zynq-7000.dtsi b/arch/arm/dts/zynq-7000.dtsi index fc5dd4d4a38e..326ab6766c56 100644 --- a/arch/arm/dts/zynq-7000.dtsi +++ b/arch/arm/dts/zynq-7000.dtsi @@ -21,6 +21,7 @@ reg = <0>; clocks = <&clkc 3>; clock-latency = <1000>; + cpu0-supply = <®ulator_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>;