• Sameer Pujar's avatar
    arm64: tegra: Add power-domain for Tegra210 HDA · 1e0ca546
    Sameer Pujar authored
    HDA initialization is failing occasionally on Tegra210 and following
    print is observed in the boot log. Because of this probe() fails and
    no sound card is registered.
    
      [16.800802] tegra-hda 70030000.hda: no codecs found!
    
    Codecs request a state change and enumeration by the controller. In
    failure cases this does not seem to happen as STATETS register reads 0.
    
    The problem seems to be related to the HDA codec dependency on SOR
    power domain. If it is gated during HDA probe then the failure is
    observed. Building Tegra HDA driver into kernel image avoids this
    failure but does not completely address the dependency part. Fix this
    problem by adding 'power-domains' DT property for Tegra210 HDA. Note
    that Tegra186 and Tegra194 HDA do this already.
    
    Fixes: 742af7e7 ("arm64: tegra: Add Tegra210 support")
    Depends-on: 96d1f078 ("arm64: tegra: Add SOR power-domain for Tegra210")
    Cc: <stable@vger.kernel.org>
    Signed-off-by: default avatarSameer Pujar <spujar@nvidia.com>
    Acked-by: default avatarJon Hunter <jonathanh@nvidia.com>
    Signed-off-by: default avatarThierry Reding <treding@nvidia.com>
    1e0ca546
tegra210.dtsi 50.4 KB