drivers/qe/fdt.c

   1 // SPDX-License-Identifier: GPL-2.0+
   2 /*
   3  * Copyright 2008 Freescale Semiconductor, Inc.
   4  *
   5  * (C) Copyright 2000
   6  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   7  */
   8
   9 #include <common.h>
  10 #include <linux/libfdt.h>
  11 #include <fdt_support.h>
  12 #include <fsl_qe.h>
  13
  14 #ifdef CONFIG_QE
  15 DECLARE_GLOBAL_DATA_PTR;
  16
  17 /*
  18  * If a QE firmware has been uploaded, then add the 'firmware' node under
  19  * the 'qe' node.
  20  */
  21 void fdt_fixup_qe_firmware(void *blob)
  22 {
  23         struct qe_firmware_info *qe_fw_info;
  24         int node, ret;
  25
  26         qe_fw_info = qe_get_firmware_info();
  27         if (!qe_fw_info)
  28                 return;
  29
  30         node = fdt_path_offset(blob, "/qe");
  31         if (node < 0)
  32                 return;
  33
  34         /* We assume the node doesn't exist yet */
  35         node = fdt_add_subnode(blob, node, "firmware");
  36         if (node < 0)
  37                 return;
  38
  39         ret = fdt_setprop(blob, node, "extended-modes",
  40                 &qe_fw_info->extended_modes, sizeof(u64));
  41         if (ret < 0)
  42                 goto error;
  43
  44         ret = fdt_setprop_string(blob, node, "id", qe_fw_info->id);
  45         if (ret < 0)
  46                 goto error;
  47
  48         ret = fdt_setprop(blob, node, "virtual-traps", qe_fw_info->vtraps,
  49                 sizeof(qe_fw_info->vtraps));
  50         if (ret < 0)
  51                 goto error;
  52
  53         return;
  54
  55 error:
  56         fdt_del_node(blob, node);
  57 }
  58
  59 void ft_qe_setup(void *blob)
  60 {
  61         do_fixup_by_prop_u32(blob, "device_type", "qe", 4,
  62                 "bus-frequency", gd->arch.qe_clk, 1);
  63         do_fixup_by_prop_u32(blob, "device_type", "qe", 4,
  64                 "brg-frequency", gd->arch.brg_clk, 1);
  65         do_fixup_by_compat_u32(blob, "fsl,qe",
  66                 "clock-frequency", gd->arch.qe_clk, 1);
  67         do_fixup_by_compat_u32(blob, "fsl,qe",
  68                 "bus-frequency", gd->arch.qe_clk, 1);
  69         do_fixup_by_compat_u32(blob, "fsl,qe",
  70                 "brg-frequency", gd->arch.brg_clk, 1);
  71         do_fixup_by_compat_u32(blob, "fsl,qe-gtm",
  72                 "clock-frequency", gd->arch.qe_clk / 2, 1);
  73         fdt_fixup_qe_firmware(blob);
  74 }
  75 #endif