git.openwrt.org Git - openwrt/staging/ldir.git/blob

   1 From b36074357baf2794c825ea1c145de1d22b15380b Mon Sep 17 00:00:00 2001
   2 From: Varadarajan Narayanan <quic_varada@quicinc.com>
   3 Date: Fri, 20 Oct 2023 11:49:39 +0530
   4 Subject: [PATCH] arm64: dts: qcom: ipq9574: populate the opp table based on
   5  the eFuse
   6
   7 IPQ95xx SoCs have different OPPs available for the CPU based on
   8 SoC variant. This can be determined from an eFuse register
   9 present in the silicon.
  10
  11 Add support to read the eFuse and populate the OPPs based on it.
  12
  13 Frequency       1.2GHz  1.8GHz  1.5GHz  No      opp-supported-hw
  14                                         Limit
  15 ------------------------------------------------------------
  16 936000000       1       1       1       1       0xf
  17 1104000000      1       1       1       1       0xf
  18 1200000000      1       1       1       1       0xf
  19 1416000000      0       1       1       1       0x7
  20 1488000000      0       1       1       1       0x7
  21 1800000000      0       1       0       1       0x5
  22 2208000000      0       0       0       1       0x1
  23 -----------------------------------------------------------
  24
  25 Reviewed-by: Konrad Dybcio <konrad.dybcio@linaro.org>
  26 Signed-off-by: Kathiravan T <quic_kathirav@quicinc.com>
  27 Signed-off-by: Varadarajan Narayanan <quic_varada@quicinc.com>
  28 Link: https://lore.kernel.org/r/14ab08b7cfd904433ca6065fac798d4f221c9d95.1697781921.git.quic_varada@quicinc.com
  29 Signed-off-by: Bjorn Andersson <andersson@kernel.org>
  30 ---
  31  arch/arm64/boot/dts/qcom/ipq9574.dtsi | 21 ++++++++++++++++++++-
  32  1 file changed, 20 insertions(+), 1 deletion(-)
  33
  34 diff --git a/arch/arm64/boot/dts/qcom/ipq9574.dtsi b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
  35 index 8a72ad4afd03..d4b7e215fc92 100644
  36 --- a/arch/arm64/boot/dts/qcom/ipq9574.dtsi
  37 +++ b/arch/arm64/boot/dts/qcom/ipq9574.dtsi
  38 @@ -106,42 +106,56 @@ memory@40000000 {
  39         };
  40
  41         cpu_opp_table: opp-table-cpu {
  42 -               compatible = "operating-points-v2";
  43 +               compatible = "operating-points-v2-kryo-cpu";
  44                 opp-shared;
  45 +               nvmem-cells = <&cpu_speed_bin>;
  46
  47                 opp-936000000 {
  48                         opp-hz = /bits/ 64 <936000000>;
  49                         opp-microvolt = <725000>;
  50 +                       opp-supported-hw = <0xf>;
  51                         clock-latency-ns = <200000>;
  52                 };
  53
  54                 opp-1104000000 {
  55                         opp-hz = /bits/ 64 <1104000000>;
  56                         opp-microvolt = <787500>;
  57 +                       opp-supported-hw = <0xf>;
  58 +                       clock-latency-ns = <200000>;
  59 +               };
  60 +
  61 +               opp-1200000000 {
  62 +                       opp-hz = /bits/ 64 <1200000000>;
  63 +                       opp-microvolt = <862500>;
  64 +                       opp-supported-hw = <0xf>;
  65                         clock-latency-ns = <200000>;
  66                 };
  67
  68                 opp-1416000000 {
  69                         opp-hz = /bits/ 64 <1416000000>;
  70                         opp-microvolt = <862500>;
  71 +                       opp-supported-hw = <0x7>;
  72                         clock-latency-ns = <200000>;
  73                 };
  74
  75                 opp-1488000000 {
  76                         opp-hz = /bits/ 64 <1488000000>;
  77                         opp-microvolt = <925000>;
  78 +                       opp-supported-hw = <0x7>;
  79                         clock-latency-ns = <200000>;
  80                 };
  81
  82                 opp-1800000000 {
  83                         opp-hz = /bits/ 64 <1800000000>;
  84                         opp-microvolt = <987500>;
  85 +                       opp-supported-hw = <0x5>;
  86                         clock-latency-ns = <200000>;
  87                 };
  88
  89                 opp-2208000000 {
  90                         opp-hz = /bits/ 64 <2208000000>;
  91                         opp-microvolt = <1062500>;
  92 +                       opp-supported-hw = <0x1>;
  93                         clock-latency-ns = <200000>;
  94                 };
  95         };
  96 @@ -223,6 +237,11 @@ qfprom: efuse@a4000 {
  97                         reg = <0x000a4000 0x5a1>;
  98                         #address-cells = <1>;
  99                         #size-cells = <1>;
 100 +
 101 +                       cpu_speed_bin: cpu-speed-bin@15 {
 102 +                               reg = <0x15 0x2>;
 103 +                               bits = <7 2>;
 104 +                       };
 105                 };
 106
 107                 cryptobam: dma-controller@704000 {
 108 --
 109 2.45.2
 110