drivers/qe/fdt.c

   1 /*
   2  * Copyright 2008 Freescale Semiconductor, Inc.
   3  *
   4  * (C) Copyright 2000
   5  * Wolfgang Denk, DENX Software Engineering, wd@denx.de.
   6  *
   7  * See file CREDITS for list of people who contributed to this
   8  * project.
   9  *
  10  * This program is free software; you can redistribute it and/or
  11  * modify it under the terms of the GNU General Public License as
  12  * published by the Free Software Foundation; either version 2 of
  13  * the License, or (at your option) any later version.
  14  *
  15  * This program is distributed in the hope that it will be useful,
  16  * but WITHOUT ANY WARRANTY; without even the implied warranty of
  17  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the
  18  * GNU General Public License for more details.
  19  *
  20  * You should have received a copy of the GNU General Public License
  21  * along with this program; if not, write to the Free Software
  22  * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
  23  * MA 02111-1307 USA
  24  */
  25
  26 #include <common.h>
  27 #include <libfdt.h>
  28 #include <fdt_support.h>
  29 #include "qe.h"
  30
  31 DECLARE_GLOBAL_DATA_PTR;
  32
  33 /*
  34  * If a QE firmware has been uploaded, then add the 'firmware' node under
  35  * the 'qe' node.
  36  */
  37 void fdt_fixup_qe_firmware(void *blob)
  38 {
  39         struct qe_firmware_info *qe_fw_info;
  40         int node, ret;
  41
  42         qe_fw_info = qe_get_firmware_info();
  43         if (!qe_fw_info)
  44                 return;
  45
  46         node = fdt_path_offset(blob, "/qe");
  47         if (node < 0)
  48                 return;
  49
  50         /* We assume the node doesn't exist yet */
  51         node = fdt_add_subnode(blob, node, "firmware");
  52         if (node < 0)
  53                 return;
  54
  55         ret = fdt_setprop(blob, node, "extended-modes",
  56                 &qe_fw_info->extended_modes, sizeof(u64));
  57         if (ret < 0)
  58                 goto error;
  59
  60         ret = fdt_setprop_string(blob, node, "id", qe_fw_info->id);
  61         if (ret < 0)
  62                 goto error;
  63
  64         ret = fdt_setprop(blob, node, "virtual-traps", qe_fw_info->vtraps,
  65                 sizeof(qe_fw_info->vtraps));
  66         if (ret < 0)
  67                 goto error;
  68
  69         return;
  70
  71 error:
  72         fdt_del_node(blob, node);
  73 }
  74
  75 void ft_qe_setup(void *blob)
  76 {
  77 #ifdef CONFIG_QE
  78         do_fixup_by_prop_u32(blob, "device_type", "qe", 4,
  79                 "bus-frequency", gd->qe_clk, 1);
  80         do_fixup_by_prop_u32(blob, "device_type", "qe", 4,
  81                 "brg-frequency", gd->brg_clk, 1);
  82         do_fixup_by_compat_u32(blob, "fsl,qe",
  83                 "clock-frequency", gd->qe_clk, 1);
  84         do_fixup_by_compat_u32(blob, "fsl,qe",
  85                 "bus-frequency", gd->qe_clk, 1);
  86         do_fixup_by_compat_u32(blob, "fsl,qe",
  87                 "brg-frequency", gd->brg_clk, 1);
  88         do_fixup_by_compat_u32(blob, "fsl,qe-gtm",
  89                 "clock-frequency", gd->qe_clk / 2, 1);
  90         fdt_fixup_qe_firmware(blob);
  91 #endif
  92 }