On 01/03/16 23:31, Andreas Färber wrote:

Hi,

Am 01.03.2016 um 13:43 schrieb Andre Przywara:

quoted

On 01/03/16 11:18, Andreas Färber wrote:

quoted

Am 01.03.2016 um 12:01 schrieb Andre Przywara:

quoted

On 29/02/16 23:44, Andreas Färber wrote:

quoted

diff --git a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
index 0ae089bd1806..5088ae3ff653 100644
--- a/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi
+++ b/arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi

@@ -117,7 +117,9 @@
 		gic: interrupt-controller@c4301000 {
 			compatible = "arm,cortex-a15-gic", "arm,cortex-a9-gic";

I think "arm,gic-400" is the name to use here these days, especially for
arm64.

I took what /proc/device-tree showed on Android and verified that this
compatible is in use in mainline.

Some vendor Android kernel is not a good reference for mainline work ;-)
Better look at other DTs in arch/arm64/boot/dts.

Yes, that's what "in use in mainline" refers to:

$ git grep "cortex-a15-gic" -- arch/arm64/boot/dts/ | grep -v gic-400
arch/arm64/boot/dts/apm/apm-shadowcat.dtsi: compatible =
"arm,cortex-a15-gic";
arch/arm64/boot/dts/apm/apm-storm.dtsi: compatible = "arm,cortex-a15-gic";
arch/arm64/boot/dts/arm/foundation-v8.dts: compatible =
"arm,cortex-a15-gic", "arm,cortex-a9-gic";
arch/arm64/boot/dts/arm/rtsm_ve-aemv8a.dts: compatible =
"arm,cortex-a15-gic", "arm,cortex-a9-gic";
arch/arm64/boot/dts/nvidia/tegra132.dtsi: compatible = "arm,cortex-a15-gic";

Which is mainly because those DTs predate the introduction of
"arm,gic-400". Other DTs kept the cortex strings in additionally to stay
compatible with older kernels.

quoted

You could keep "arm,cortex-a15-gic" in there if you care about
compatibility with older (vendor) kernels, but I guess there are other
issues which prevent this anyway, so you could drop this as well.

Yeah, I don't care about backwards compatibility with downstream
kernels, they use weird compatible strings with spaces anyway.

So please drop it and use only "arm,gic-400" to be in line with all the
other more recent SoCs.

Thanks!
Andre