Am Dienstag, 16. August 2022, 09:49:58 CEST schrieb Jernej Škrabec:

Dne torek, 16. avgust 2022 ob 09:41:45 CEST je Krzysztof Kozlowski napisal(a):

quoted

On 15/08/2022 08:08, Samuel Holland wrote:

quoted

+
+	de: display-engine {
+		compatible = "allwinner,sun20i-d1-display-engine";
+		allwinner,pipelines = <&mixer0>, <&mixer1>;
+		status = "disabled";
+	};
+
+	osc24M: osc24M-clk {

lowercase

quoted

+		compatible = "fixed-clock";
+		clock-frequency = <24000000>;

This is a property of the board, not SoC.

SoC needs 24 MHz oscillator for correct operation, so each and every board has 
it. Having it here simplifies board DT files.

I guess the oscillator is a separate component on each board, right?
And DT obvious is meant to describe the hardware - independently from
implementation-specific choices.

Starting to discuss which exceptions to allow then might lead to even more
exceptions.

Also having to look for a board-component in the soc dtsi also is surprising
if one gets to the party later on :-) .