src/soc/mediatek/mt8183/md_ctrl.c

   1 /*
   2  *
   3  * This program is free software: you can redistribute it and/or modify
   4  * it under the terms of the GNU General Public License version 2 as
   5  * published by the Free Software Foundation.
   6  *
   7  * This program is distributed in the hope that it will be useful,
   8  * but WITHOUT ANY WARRANTY; without even the implied warranty of
   9  * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
  10  * GNU General Public License for more details.
  11  */
  12
  13 #include <device/mmio.h>
  14 #include <soc/addressmap.h>
  15 #include <soc/infracfg.h>
  16 #include <soc/pll.h>
  17 #include <soc/md_ctrl.h>
  18
  19 #define TOPCKGEN_CLK_MODE_MD_32K     (1 << 8)
  20 #define TOPCKGEN_CLK_MODE_MD_26M     (1 << 9)
  21 #define INFRA_MISC2_SRCCLKENA_RELEASE (0xFF)
  22
  23 static void internal_md_power_down(void)
  24 {
  25         /* Gating MD clock */
  26         setbits32(&mtk_topckgen->clk_mode,
  27                 TOPCKGEN_CLK_MODE_MD_32K | TOPCKGEN_CLK_MODE_MD_26M);
  28         /* Release SRCCLKENA */
  29         clrbits32(&mt8183_infracfg->infra_misc2,
  30                 INFRA_MISC2_SRCCLKENA_RELEASE);
  31 }
  32
  33 void mtk_md_early_init(void)
  34 {
  35         internal_md_power_down();
  36 }