On Sun 19 Dec 2021 at 10:56, Alexander Stein <alexander.stein@xxxxxxxxxxx> wrote: > Am Samstag, 18. Dezember 2021, 16:03:16 CET schrieb Jerome Brunet: >> >> On Sat 18 Dec 2021 at 15:26, Alexander Stein <alexander.stein@xxxxxxxxxxx> wrote: >> >> > dtschema expects a 'clocks' property if 'assigned-clocks' is used, but >> > 'sound' node does not. >> > So move the MPLL[0-2] clock settings &clkc_audio which actually use them. >> >> No, this does not make sense. >> The sound card needs the clocks set in such way - nothing else >> The clock controller work just as well regarless of the clock rate >> >> Having a clock property or not does not change that Also the documentation of assigned does not mandate that. > > Well, I checked what others did to fix this warning. So I did the same as in [1]. > Despite that, IMHO if you split 'assigned-clocks' for the same clock ´all > over users who is gonna win? 1. This is explicitly forbidden by the assigned-clock binding documentation 2. Like other interfaces, it is likely a last write wins The fact the ID assigned by the card and the one claimed controller are the same is merely a coincidence. The ID assigned could very well have been internal to the audio controller. > Because the sound card needs the clocks set > his way it is set, it is done in the same file. If I push this logic further, I may as well put everything at root of DT, or anywhere else, as long as it is in the same file and there is a clock property for the schema. We could put it with uart, that would work ;) (just kidding) The cards needs these rate because of rate family we choose to support, and how we choose to support them. This is where the assignment makes sense. > > Best regards, > Alexander > > [1] https://git.kernel.org/pub/scm/linux/kernel/git/torvalds/linux.git/commit/?id=4afb06afd76855932a2d19c983c013105f1cfb9a > >> > This fixes the dtschema warning: >> > arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dt.yaml: sound: 'clocks' is a dependency of 'assigned-clocks' >> > >> >> Then the schema needs fixing IMO >> >> > Signed-off-by: Alexander Stein <alexander.stein@xxxxxxxxxxx> >> > --- >> > .../boot/dts/amlogic/meson-g12b-odroid-n2.dtsi | 15 +++++++-------- >> > 1 file changed, 7 insertions(+), 8 deletions(-) >> > >> > diff --git a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi >> > index 9c05c83453f5..85257507206c 100644 >> > --- a/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi >> > +++ b/arch/arm64/boot/dts/amlogic/meson-g12b-odroid-n2.dtsi >> > @@ -252,14 +252,6 @@ sound { >> > "U19 INR", "ACODEC LORP", >> > "Lineout", "U19 OUTL", >> > "Lineout", "U19 OUTR"; >> > - >> > - assigned-clocks = <&clkc CLKID_MPLL2>, >> > - <&clkc CLKID_MPLL0>, >> > - <&clkc CLKID_MPLL1>; >> > - assigned-clock-parents = <0>, <0>, <0>; >> > - assigned-clock-rates = <294912000>, >> > - <270950400>, >> > - <393216000>; >> > status = "okay"; >> > >> > dai-link-0 { >> > @@ -365,6 +357,13 @@ &cecb_AO { >> > }; >> > >> > &clkc_audio { >> > + assigned-clocks = <&clkc CLKID_MPLL2>, >> > + <&clkc CLKID_MPLL0>, >> > + <&clkc CLKID_MPLL1>; >> > + assigned-clock-parents = <0>, <0>, <0>; >> > + assigned-clock-rates = <294912000>, >> > + <270950400>, >> > + <393216000>; >> > status = "okay"; >> > }; >> >>
