From: Abhinav Parihar <abhinav.parihar@oss.qualcomm.com>
To: srinivas.kandagatla@linaro.org, linux-arm-msm@vger.kernel.org
Cc: Abhinav Parihar <abhinav.parihar@oss.qualcomm.com>,
gregkh@linuxfoundation.org, quic_bkumar@quicinc.com,
ekansh.gupta@oss.qualcomm.com, linux-kernel@vger.kernel.org,
quic_chennak@quicinc.com, dri-devel@lists.freedesktop.org,
arnd@arndb.de
Subject: [PATCH v1] arm64: dts: qcom: Remove FastRPC compute CB9 entries
Date: Fri, 16 Oct 2026 10:50:42 +0530 [thread overview]
Message-ID: <20261016052042.3755352-1-abhinav.parihar@oss.qualcomm.com> (raw)
Context bank 9 is reserved for secure use cases and must not be exposed
as a FastRPC compute context bank for non-secure offloading.
Remove the compute-cb@9 nodes from the Lemans and Monaco device trees to
prevent clients from selecting a secure context bank for normal FastRPC
workloads.
Secure use case support is not currently implemented upstream.
Signed-off-by: Abhinav Parihar <abhinav.parihar@oss.qualcomm.com>
---
arch/arm64/boot/dts/qcom/lemans.dtsi | 16 ----------------
arch/arm64/boot/dts/qcom/monaco.dtsi | 7 -------
2 files changed, 23 deletions(-)
diff --git a/arch/arm64/boot/dts/qcom/lemans.dtsi b/arch/arm64/boot/dts/qcom/lemans.dtsi
index 695eae1b7256..5481dfb73454 100644
--- a/arch/arm64/boot/dts/qcom/lemans.dtsi
+++ b/arch/arm64/boot/dts/qcom/lemans.dtsi
@@ -7861,14 +7861,6 @@ compute-cb@8 {
dma-coherent;
};
- compute-cb@9 {
- compatible = "qcom,fastrpc-compute-cb";
- reg = <9>;
- iommus = <&apps_smmu 0x2149 0x04a0>,
- <&apps_smmu 0x2189 0x0400>;
- dma-coherent;
- };
-
compute-cb@11 {
compatible = "qcom,fastrpc-compute-cb";
reg = <11>;
@@ -8000,14 +7992,6 @@ compute-cb@8 {
dma-coherent;
};
- compute-cb@9 {
- compatible = "qcom,fastrpc-compute-cb";
- reg = <9>;
- iommus = <&apps_smmu 0x2949 0x04a0>,
- <&apps_smmu 0x2989 0x0400>;
- dma-coherent;
- };
-
compute-cb@10 {
compatible = "qcom,fastrpc-compute-cb";
reg = <10>;
diff --git a/arch/arm64/boot/dts/qcom/monaco.dtsi b/arch/arm64/boot/dts/qcom/monaco.dtsi
index cfe39f923224..e73a735f2f13 100644
--- a/arch/arm64/boot/dts/qcom/monaco.dtsi
+++ b/arch/arm64/boot/dts/qcom/monaco.dtsi
@@ -7822,13 +7822,6 @@ compute-cb@8 {
dma-coherent;
};
- compute-cb@9 {
- compatible = "qcom,fastrpc-compute-cb";
- reg = <9>;
- iommus = <&apps_smmu 0x19c9 0x0400>;
- dma-coherent;
- };
-
compute-cb@11 {
compatible = "qcom,fastrpc-compute-cb";
reg = <0xb>;
--
2.34.1
next reply other threads:[~2026-10-16 5:20 UTC|newest]
Thread overview: 3+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-10-16 5:20 Abhinav Parihar [this message]
2026-10-16 8:45 ` Konrad Dybcio
2026-10-16 10:03 ` Ekansh Gupta
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