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  12. 30 Jun, 2017 1 commit
    • Caesar Wang's avatar
      rockchip/rk3399: fixes the typo and the WARNINGS during suspend/resume · c3710ee7
      Caesar Wang authored
      
      
      This patch fixes the two things as follows:
      
      1) rk3399_flash_l2_b" seems to be a typo. That's "flush", not "flash".
      
      2) fixes the warnings log.
      We always hit the warnings thing during the suspend, as below log:
      ..
      [   51.022334] CPU5: shutdown
      [   51.025069] psci: CPU5 killed.
      INFO:    sdram_params->ddr_freq = 928000000
      WARNING: rk3399_flash_l2_b:reg 28830380,wait
      
      When the L2 completes the clean and invalidate sequence, it asserts the
      L2FLUSHDONE signal. The SoC can now deassert L2FLUSHREQ signal and then
      the L2 deasserts L2FLUSHDONE.
      
      Then, a loop without a delay isn't really great to measure time. We should
      probably add a udelay(10) or so in there and then maybe replace the WARN()
      after the loop. In the actual tests, the L2 cache will take ~4ms by
      default for big cluster.
      
      In the real world that give 10ms for the enough margin, like the
      ddr/cpu/cci frequency and other factors that will affect it.
      
      Change-Id: I55788c897be232bf72e8c7b0e10cf9b06f7aa50d
      Signed-off-by: default avatarCaesar Wang <wxt@rock-chips.com>
      c3710ee7
  13. 29 Jun, 2017 2 commits