Documentation/devicetree/bindings/remoteproc/qcom,adsp.txt

   1 Qualcomm ADSP Peripheral Image Loader
   2
   3 This document defines the binding for a component that loads and boots firmware
   4 on the Qualcomm ADSP Hexagon core.
   5
   6 - compatible:
   7         Usage: required
   8         Value type: <string>
   9         Definition: must be one of:
  10                     "qcom,msm8974-adsp-pil"
  11                     "qcom,msm8996-adsp-pil"
  12                     "qcom,msm8996-slpi-pil"
  13
  14 - interrupts-extended:
  15         Usage: required
  16         Value type: <prop-encoded-array>
  17         Definition: must list the watchdog, fatal IRQs ready, handover and
  18                     stop-ack IRQs
  19
  20 - interrupt-names:
  21         Usage: required
  22         Value type: <stringlist>
  23         Definition: must be "wdog", "fatal", "ready", "handover", "stop-ack"
  24
  25 - clocks:
  26         Usage: required
  27         Value type: <prop-encoded-array>
  28         Definition: reference to the xo clock and optionally aggre2 clock to be
  29                     held on behalf of the booting Hexagon core
  30
  31 - clock-names:
  32         Usage: required
  33         Value type: <stringlist>
  34         Definition: must be "xo" and optionally include "aggre2"
  35
  36 - cx-supply:
  37         Usage: required
  38         Value type: <phandle>
  39         Definition: reference to the regulator to be held on behalf of the
  40                     booting Hexagon core
  41
  42 - px-supply:
  43         Usage: required
  44         Value type: <phandle>
  45         Definition: reference to the px regulator to be held on behalf of the
  46                     booting Hexagon core
  47
  48 - memory-region:
  49         Usage: required
  50         Value type: <phandle>
  51         Definition: reference to the reserved-memory for the ADSP
  52
  53 - qcom,smem-states:
  54         Usage: required
  55         Value type: <phandle>
  56         Definition: reference to the smem state for requesting the ADSP to
  57                     shut down
  58
  59 - qcom,smem-state-names:
  60         Usage: required
  61         Value type: <stringlist>
  62         Definition: must be "stop"
  63
  64
  65 = SUBNODES
  66 The adsp node may have an subnode named "smd-edge" that describes the SMD edge,
  67 channels and devices related to the ADSP.  See ../soc/qcom/qcom,smd.txt for
  68 details on how to describe the SMD edge.
  69
  70
  71 = EXAMPLE
  72 The following example describes the resources needed to boot control the
  73 ADSP, as it is found on MSM8974 boards.
  74
  75         adsp {
  76                 compatible = "qcom,msm8974-adsp-pil";
  77
  78                 interrupts-extended = <&intc 0 162 IRQ_TYPE_EDGE_RISING>,
  79                                       <&adsp_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
  80                                       <&adsp_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
  81                                       <&adsp_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
  82                                       <&adsp_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
  83                 interrupt-names = "wdog",
  84                                   "fatal",
  85                                   "ready",
  86                                   "handover",
  87                                   "stop-ack";
  88
  89                 clocks = <&rpmcc RPM_CXO_CLK>;
  90                 clock-names = "xo";
  91
  92                 cx-supply = <&pm8841_s2>;
  93
  94                 memory-region = <&adsp_region>;
  95
  96                 qcom,smem-states = <&adsp_smp2p_out 0>;
  97                 qcom,smem-state-names = "stop";
  98
  99                 smd-edge {
 100                         interrupts = <0 156 IRQ_TYPE_EDGE_RISING>;
 101
 102                         qcom,ipc = <&apcs 8 8>;
 103                         qcom,smd-edge = <1>;
 104                 };
 105         };
 106
 107 The following example describes the resources needed to boot control the
 108 SLPI, as it is found on MSM8996 boards.
 109
 110         slpi {
 111                 compatible = "qcom,msm8996-slpi-pil";
 112                 interrupts-extended = <&intc 0 390 IRQ_TYPE_EDGE_RISING>,
 113                                       <&slpi_smp2p_in 0 IRQ_TYPE_EDGE_RISING>,
 114                                       <&slpi_smp2p_in 1 IRQ_TYPE_EDGE_RISING>,
 115                                       <&slpi_smp2p_in 2 IRQ_TYPE_EDGE_RISING>,
 116                                       <&slpi_smp2p_in 3 IRQ_TYPE_EDGE_RISING>;
 117                 interrupt-names = "wdog",
 118                                   "fatal",
 119                                   "ready",
 120                                   "handover",
 121                                   "stop-ack";
 122
 123                 clocks = <&rpmcc MSM8996_RPM_SMD_XO_CLK_SRC>,
 124                          <&rpmcc MSM8996_RPM_SMD_AGGR2_NOC_CLK>;
 125                 clock-names = "xo", "aggre2";
 126
 127                 cx-supply = <&pm8994_l26>;
 128                 px-supply = <&pm8994_lvs2>;
 129
 130                 memory-region = <&slpi_region>;
 131                 qcom,smem-states = <&slpi_smp2p_out 0>;
 132                 qcom,smem-state-names = "stop";
 133         };