• Sameer Pujar's avatar
    ASoC: tegra: Add Tegra210 based DMIC driver · 8c8ff982
    Sameer Pujar authored
    The Digital MIC (DMIC) Controller is used to interface with Pulse Density
    Modulation (PDM) input devices. The DMIC controller implements a converter
    to convert PDM signals to Pulse Code Modulation (PCM) signals. From signal
    flow perspective, the DMIC can be viewed as a PDM receiver.
    
    This patch registers DMIC component with ASoC framework. The component
    driver exposes DAPM widgets, routes and kcontrols for the device. The DAI
    driver exposes DMIC interfaces, which can be used to connect different
    components in the ASoC layer. Makefile and Kconfig support is added to
    allow to build the driver. The DMIC devices can be enabled in the DT via
    "nvidia,tegra210-dmic" compatible string. This driver can be used for
    Tegra186 and Tegra194 chips as well.
    Signed-off-by: default avatarSameer Pujar <spujar@nvidia.com>
    Link: https://lore.kernel.org/r/1595134890-16470-4-git-send-email-spujar@nvidia.comSigned-off-by: default avatarMark Brown <broonie@kernel.org>
    8c8ff982
Kconfig 5.03 KB