Hi Philippe, On Thursday, 19 April 2018 12:31:15 EEST Philippe CORNU wrote: > On 04/19/2018 10:11 AM, Laurent Pinchart wrote: > > On Tuesday, 10 April 2018 08:19:26 EEST Philippe Cornu wrote: > > > >> Add the 3 optional power supplies using the exact description > >> found in the document named > >> "SiI9022A/SiI9024A HDMI Transmitter Data Sheet (August 2016)". > >> > >> Signed-off-by: Philippe Cornu <philippe.cornu@xxxxxx> > >> --- > >> > >> Documentation/devicetree/bindings/display/bridge/sii902x.txt | 3 +++ > >> 1 file changed, 3 insertions(+) > >> > >> diff --git > >> a/Documentation/devicetree/bindings/display/bridge/sii902x.txt > >> b/Documentation/devicetree/bindings/display/bridge/sii902x.txt index > >> 56a3e68ccb80..cf53678fe574 100644 > >> --- a/Documentation/devicetree/bindings/display/bridge/sii902x.txt > >> +++ b/Documentation/devicetree/bindings/display/bridge/sii902x.txt > >> @@ -8,6 +8,9 @@ Optional properties: > >> - interrupts-extended or interrupt-parent + interrupts: describe > >> the interrupt line used to inform the host about hotplug events. > >> - reset-gpios: OF device-tree gpio specification for RST_N pin. > >> + - iovcc-supply: I/O supply voltage (1.8V or 3.3V, host-dependent). > >> + - avcc12-supply: TMDS analog supply voltage (1.2V). > >> + - cvcc12-supply: Digital core supply voltage (1.2V). > > > > It seems that the AVCC12 and CVCC12 power supplies are usually derived > > from the same source. How about starting with one DT property for both, > > and adding a second one later if needed ? > > Well, I do not know what is the best. Here I took the description from > the documentation, and to allow all possible board configurations, I > added these supplies as "optional" properties: if there is only one 1v2 > regulator on the board, the dt will contain only avcc12 or cvcc12 and > everything will work fine (we will have a dummy regulator for the > missing optional 1v2 reg), if both regulators are there for any reasons > (stability, noise, whatever...) then both entries will be in the dt. > > If you confirm you prefer a single 1v2 supply (named for instance > "vcc12-supply") then I will do :-) Please see https://lists.freedesktop.org/archives/dri-devel/2018-April/ 172400.html (and the messages that lead to it) and https:// lists.freedesktop.org/archives/dri-devel/2018-March/170763.html. > >> Optional subnodes: > >> - video input: this subnode can contain a video input port node -- Regards, Laurent Pinchart -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
