From: Biju Das <biju.das@xxxxxxxxxxxxxx>
Add needed information inside CPU0 for the generic cpufreq-cpu0 driver.
- clock-latency = 300 us
Approximate worst-case latency to do clock transition for every
OPPs. Using an arbitrary safe value similar to r8a7791(R-Car M2) Soc.
- operating-points = < kHz - uV >
List of 6 operating points. All of them are using the same voltage
since DVS is not supported in RZ/G1 Soc.
Note:This also fixes the below errors seen on kernel logs
[ 0.876877] cpu cpu0: dev_pm_opp_get_opp_count: OPP table not found (-19)
[ 0.883727] cpu cpu1: cpufreq_init: failed to get clk: -2
Signed-off-by: Biju Das <biju.das@xxxxxxxxxxxxxx>
Signed-off-by: Simon Horman <horms+renesas@xxxxxxxxxxxx>
---
arch/arm/boot/dts/r8a7743.dtsi | 9 +++++++++
1 file changed, 9 insertions(+)
diff --git a/arch/arm/boot/dts/r8a7743.dtsi b/arch/arm/boot/dts/r8a7743.dtsi
index ec9db0fcffc6..14222c72f0e0 100644
--- a/arch/arm/boot/dts/r8a7743.dtsi
+++ b/arch/arm/boot/dts/r8a7743.dtsi
@@ -38,8 +38,17 @@
reg = <0>;
clock-frequency = <1500000000>;
clocks = <&cpg CPG_CORE R8A7743_CLK_Z>;
+ clock-latency = <300000>; /* 300 us */
power-domains = <&sysc R8A7743_PD_CA15_CPU0>;
next-level-cache = <&L2_CA15>;
+
+ /* kHz - uV - OPPs unknown yet */
+ operating-points = <1500000 1000000>,
+ <1312500 1000000>,
+ <1125000 1000000>,
+ < 937500 1000000>,
+ < 750000 1000000>,
+ < 375000 1000000>;
};
cpu1: cpu@1 {
--
2.1.4
