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Wysocki" , dl-linux-imx , "kernel@pengutronix.de" , Fabio Estevam , "linux-arm-kernel@lists.infradead.org" , Abel Vesa Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Add a nvmem cell on cpu node referencing speed grade and the 1.8 Ghz cpufreq opp. The imx-cpufreq-dt driver will read speed grade and disable higher opps if unsupported. Signed-off-by: Leonard Crestez --- arch/arm64/boot/dts/freescale/imx8mm.dtsi | 23 ++++++++++++++++++++++- 1 file changed, 22 insertions(+), 1 deletion(-) diff --git a/arch/arm64/boot/dts/freescale/imx8mm.dtsi b/arch/arm64/boot/dts/freescale/imx8mm.dtsi index 0b2a585c5844..9154f48e81f4 100644 --- a/arch/arm64/boot/dts/freescale/imx8mm.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mm.dtsi @@ -51,10 +51,12 @@ clock-latency = <61036>; /* two CLK32 periods */ clocks = <&clk IMX8MM_CLK_ARM>; enable-method = "psci"; next-level-cache = <&A53_L2>; operating-points-v2 = <&a53_opp_table>; + nvmem-cells = <&cpu_speed_grade>; + nvmem-cell-names = "speed_grade"; }; A53_1: cpu@1 { device_type = "cpu"; compatible = "arm,cortex-a53"; @@ -95,21 +97,36 @@ a53_opp_table: opp-table { compatible = "operating-points-v2"; opp-shared; + opp-800000000 { + opp-hz = /bits/ 64 <800000000>; + opp-microvolt = <850000>; + opp-supported-hw = <0xf>; + clock-latency-ns = <150000>; + }; + opp-1200000000 { opp-hz = /bits/ 64 <1200000000>; opp-microvolt = <850000>; + opp-supported-hw = <0xe>; clock-latency-ns = <150000>; }; opp-1600000000 { opp-hz = /bits/ 64 <1600000000>; opp-microvolt = <900000>; + opp-supported-hw = <0xc>; + clock-latency-ns = <150000>; + }; + + opp-1800000000 { + opp-hz = /bits/ 64 <1800000000>; + opp-microvolt = <1000000>; + opp-supported-hw = <0x8>; clock-latency-ns = <150000>; - opp-suspend; }; }; memory@40000000 { device_type = "memory"; @@ -317,10 +334,14 @@ reg = <0x30350000 0x10000>; clocks = <&clk IMX8MM_CLK_OCOTP_ROOT>; /* For nvmem subnodes */ #address-cells = <1>; #size-cells = <1>; + + cpu_speed_grade: speed-grade@10 { + reg = <0x10 4>; + }; }; anatop: anatop@30360000 { compatible = "fsl,imx8mm-anatop", "syscon", "simple-bus"; reg = <0x30360000 0x10000>; -- 2.17.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel