From 67327f125801f98aec9e2cf5e1df16cf493a065f Mon Sep 17 00:00:00 2001 From: Asahi Lina Date: Wed, 7 Dec 2022 10:43:04 +0900 Subject: [PATCH] arm64: dts: apple: t6002: Fix GPU power domains On t6002 (M1 Ultra), each die contains a self-contained GPU block. However, only the coprocessor and global management circuitry of the first die are used. This is what is represented by the "gpu" PS (the one in die1 is disabled). Nonetheless, this shared component drives the processing blocks in both dies, and therefore depends on the AFR fabric being powered up on both dies. Add an explicit dependency from the GPU block on die0 to AFR on die1, next to the existing die0 AFR dependency. Fixes: fa86294eb355 ("arm64: dts: apple: Add initial t6000/t6001/t6002 DTs") Signed-off-by: Asahi Lina Reviewed-by: Janne Grunau Signed-off-by: Hector Martin --- arch/arm64/boot/dts/apple/t6002.dtsi | 5 +++++ 1 file changed, 5 insertions(+) diff --git a/arch/arm64/boot/dts/apple/t6002.dtsi b/arch/arm64/boot/dts/apple/t6002.dtsi index 15da2c7..a963a50 100644 --- a/arch/arm64/boot/dts/apple/t6002.dtsi +++ b/arch/arm64/boot/dts/apple/t6002.dtsi @@ -294,3 +294,8 @@ }; }; }; + +&ps_gfx { + // On t6002, the die0 GPU power domain needs both AFR power domains + power-domains = <&ps_afr>, <&ps_afr_die1>; +}; -- 2.7.4