Re: [PATCH 2/2] arm64: dts: Add Apple SoC GPU
From: Sven Peter <sven@kernel.org>
Date: 2025-06-11 19:12:41
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asahi, dri-devel, linux-devicetree, lkml
Hi, On 11.06.25 19:32, Sasha Finkelstein via B4 Relay wrote:
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From: Sasha Finkelstein <redacted> Add device tree entries for GPUs in M-series SoCs Signed-off-by: Sasha Finkelstein <redacted> --- arch/arm64/boot/dts/apple/t6000.dtsi | 4 ++++ arch/arm64/boot/dts/apple/t6001.dtsi | 4 ++++ arch/arm64/boot/dts/apple/t6002.dtsi | 4 ++++ arch/arm64/boot/dts/apple/t600x-common.dtsi | 34 ++++++++++++++++++++++++++++++++++ arch/arm64/boot/dts/apple/t600x-die0.dtsi | 28 ++++++++++++++++++++++++++++ arch/arm64/boot/dts/apple/t8103.dtsi | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ arch/arm64/boot/dts/apple/t8112.dtsi | 62 ++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++++ 7 files changed, 198 insertions(+)diff --git a/arch/arm64/boot/dts/apple/t6000.dtsi b/arch/arm64/boot/dts/apple/t6000.dtsi index 89c3b211b116e96ee0a5ea0c923c3ab824008307..3b60842045d4c3277e9530a13ef2811774209697 100644 --- a/arch/arm64/boot/dts/apple/t6000.dtsi +++ b/arch/arm64/boot/dts/apple/t6000.dtsi@@ -16,3 +16,7 @@ / { };
[....]
};
+
+ reserved-memory {
+ #address-cells = <2>;
+ #size-cells = <2>;
+ ranges;
+
+ gpu_globals: globals {
+ reg = <0x0 0 0 0>;
+ };
+
+ gpu_hw_cal_a: hw-cal-a {
+ reg = <0x0 0 0 0>;
+ };
+
+ gpu_hw_cal_b: hw-cal-b {
+ reg = <0x0 0 0 0>;
+ };
+
+ uat_handoff: uat-handoff {
+ reg = <0x0 0 0 0>;
+ };
+
+ uat_pagetables: uat-pagetables {
+ reg = <0x0 0 0 0>;
+ };
+
+ uat_ttbs: uat-ttbs {
+ reg = <0x0 0 0 0>;
+ };With W=1 this results in a bunch of new warnings like arch/arm64/boot/dts/apple/t600x-common.dtsi:391.24-394.5: Warning (unit_address_vs_reg): /reserved-memory/globals: node has a reg or ranges property, but no unit name but I'm not sure it's possible to fix that without making up fake addresses that then get overwritten here. Would be nice to fix this some other way but I'm not sure how and so far we don't enforce "no additional W=1 warnings", so: Reviewed-by: Sven Peter <sven@kernel.org> Best, Sven