Re: [PATCH V4 1/2] arm64: dts: freescale: imx8qxp: add cpu opp table
From: Viresh Kumar <viresh.kumar@linaro.org>
Date: 2019-02-14 07:12:42
Also in:
linux-clk, linux-devicetree, lkml
On 14-02-19, 01:54, Anson Huang wrote:
quoted hunk ↗ jump to hunk
Add i.MX8QXP CPU opp table to support cpufreq. Signed-off-by: Anson Huang <redacted> --- No change since V3. --- arch/arm64/boot/dts/freescale/imx8qxp.dtsi | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+)diff --git a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi index 4021f25..593e2db 100644 --- a/arch/arm64/boot/dts/freescale/imx8qxp.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8qxp.dtsi@@ -34,6 +34,10 @@ reg = <0x0 0x0>; enable-method = "psci"; next-level-cache = <&A35_L2>; + clocks = <&clk IMX_A35_CLK>; + clock-latency = <61036>;
Who uses this value ? And why is it different from the one mentioned in the OPP table ?
+ #cooling-cells = <2>;
clocks and cooling-cells must be defined for all the CPUs.
quoted hunk ↗ jump to hunk
+ operating-points-v2 = <&a35_0_opp_table>; }; A35_1: cpu@1 {@@ -42,6 +46,7 @@ reg = <0x0 0x1>; enable-method = "psci"; next-level-cache = <&A35_L2>; + operating-points-v2 = <&a35_0_opp_table>; }; A35_2: cpu@2 {@@ -50,6 +55,7 @@ reg = <0x0 0x2>; enable-method = "psci"; next-level-cache = <&A35_L2>; + operating-points-v2 = <&a35_0_opp_table>; }; A35_3: cpu@3 {@@ -58,6 +64,7 @@ reg = <0x0 0x3>; enable-method = "psci"; next-level-cache = <&A35_L2>; + operating-points-v2 = <&a35_0_opp_table>; }; A35_L2: l2-cache0 {@@ -65,6 +72,24 @@ }; }; + a35_0_opp_table: opp-table { + compatible = "operating-points-v2"; + opp-shared; + + opp-900000000 { + opp-hz = /bits/ 64 <900000000>; + opp-microvolt = <1000000>; + clock-latency-ns = <150000>; + }; + + opp-1200000000 { + opp-hz = /bits/ 64 <1200000000>; + opp-microvolt = <1100000>; + clock-latency-ns = <150000>; + opp-suspend;
You want to go to a higher frequency on suspend ?
+ };
+ };
+
gic: interrupt-controller@51a00000 {
compatible = "arm,gic-v3";
reg = <0x0 0x51a00000 0 0x10000>, /* GIC Dist */
--
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