Hi Inki, On 03/12/2018 01:48 AM, Inki Dae wrote: > Thanks for explanation. By the way, who binds '#sound-dai-cells' property?. > This patch adds this property to hdmi device node which will be bound by > HDMI driver fo Exynos DRM but I don't see any place to bind > '#sound-dai-cells' > property in this driver. > So I think some driver like Odroid XU3/4 audio > driver(sound/soc/samsung/odroid.c) > or ASoC simple audio card driver(sound/soc/generic/simple-card.c) should > exist > and this property should be placed to such device node.
The *-cells property is supposed to be in a node that a phandle points to, and in this case the phandle entry in 'sound-dai' points to the hdmi node. >From the DT bindings perspective it not that important how Linux parses the bindings, it's more a matter of describing the HW configuration. There is even a related check in dtc: $ grep -n sound scripts/dtc/checks.c 1208:WARNING_PROPERTY_PHANDLE_CELLS(sound_dai, "sound-dai", "#sound-dai-cells"); -- Regards, Sylwester
