On 20/02/2020 06:34, Sameer Pujar wrote: > The Digital Speaker Controller (DSPK) converts the multi-bit Pulse Code > Modulation (PCM) audio input to oversampled 1-bit Pulse Density Modulation > (PDM) output. From the signal flow perpsective, the DSPK can be viewed as > a PDM transmitter that up-samples the input to the desired sampling rate > by interpolation then converts the oversampled PCM input to the desired > 1-bit output via Delta Sigma Modulation (DSM). > > This patch registers DSPK component with ASoC framework. The component > driver exposes DAPM widgets, routes and kcontrols for the device. The DAI > driver exposes DSPK 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 DSPK devices can be enabled in the DT via > "nvidia,tegra186-dspk" compatible binding. This driver can be used > on Tegra194 chip as well. > > Signed-off-by: Sameer Pujar <spujar@xxxxxxxxxx> > --- > sound/soc/tegra/Kconfig | 13 + > sound/soc/tegra/Makefile | 2 + > sound/soc/tegra/tegra186_dspk.c | 510 ++++++++++++++++++++++++++++++++++++++++ > sound/soc/tegra/tegra186_dspk.h | 73 ++++++ > 4 files changed, 598 insertions(+) > create mode 100644 sound/soc/tegra/tegra186_dspk.c > create mode 100644 sound/soc/tegra/tegra186_dspk.h Aside from Randy's comment ... Reviewed-by: Jon Hunter <jonathanh@xxxxxxxxxx> Cheers Jon -- nvpublic
