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