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arm64: dts: qcom: kodiak: avoid EFI overlap for ADSP remote heap

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On KODIAK platforms boot can fail when the DT "adsp-rpc-remote-heap"
reserved-memory region overlaps with firmware allocations (UEFI/EFI
runtime). The kernel then reports failure to reserve the region and
subsequent EFI runtime activity may trigger aborts.

The remote heap node was described as a fixed "no-map" region, which
turns it into a hard carveout. Replace it with a "shared-dma-pool"
reserved memory region with reusable CMA-backed allocation, specifying
alignment and size.

This avoids hard carveouts and reduces the chance of conflicting with
firmware memory maps while keeping an explicit pool for ADSP remote
heap usage.

Fixes: 90a58ffa9c ("arm64: dts: qcom: kodiak: Add memory region for audiopd")
Cc: stable@kernel.org
Signed-off-by: Jianping Li <jianping.li@oss.qualcomm.com>
Reviewed-by: Konrad Dybcio <konrad.dybcio@oss.qualcomm.com>
Link: https://lore.kernel.org/r/20260429073443.2027-1-jianping.li@oss.qualcomm.com
Signed-off-by: Bjorn Andersson <andersson@kernel.org>
This commit is contained in:
Jianping Li 2026-04-29 15:34:43 +08:00 committed by Bjorn Andersson
parent 50c0854e27
commit 9d7d847ff1
1 changed files with 6 additions and 3 deletions
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9
arch/arm64/boot/dts/qcom/kodiak.dtsi
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@ -191,9 +191,12 @@ rmtfs_mem: rmtfs@9c900000 {
qcom,vmid = <QCOM_SCM_VMID_MSS_MSA>;
};
adsp_rpc_remote_heap_mem: adsp-rpc-remote-heap@9cb80000 {
reg = <0x0 0x9cb80000 0x0 0x800000>;
no-map;
adsp_rpc_remote_heap_mem: adsp-rpc-remote-heap {
compatible = "shared-dma-pool";
alloc-ranges = <0x0 0x80000000 0x0 0x80000000>;
reusable;
alignment = <0x0 0x400000>;
size = <0x0 0x800000>;
};
};