linux-kernel - [PATCH 1/5] arm64: dts: ti: k3-j722s-ti-ipc-firmware: Add memory pool for DSP i/o buffers

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-Id: <20260113-thames-v1-1-99390026937c@tomeuvizoso.net>
Date: Tue, 13 Jan 2026 18:44:35 +0100
From: Tomeu Vizoso <tomeu@...euvizoso.net>
To: Nishanth Menon <nm@...com>, "Andrew F. Davis" <afd@...com>, 
 Randolph Sapp <rs@...com>, Jonathan Humphreys <j-humphreys@...com>, 
 Andrei Aldea <a-aldea@...com>, Chirag Shilwant <c-shilwant@...com>, 
 Vignesh Raghavendra <vigneshr@...com>, Tero Kristo <kristo@...nel.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Oded Gabbay <ogabbay@...nel.org>, 
 Jonathan Corbet <corbet@....net>, Sumit Semwal <sumit.semwal@...aro.org>, 
 Christian König <christian.koenig@....com>
Cc: linux-arm-kernel@...ts.infradead.org, devicetree@...r.kernel.org, 
 linux-kernel@...r.kernel.org, dri-devel@...ts.freedesktop.org, 
 linux-doc@...r.kernel.org, linux-media@...r.kernel.org, 
 linaro-mm-sig@...ts.linaro.org, Tomeu Vizoso <tomeu@...euvizoso.net>
Subject: [PATCH 1/5] arm64: dts: ti: k3-j722s-ti-ipc-firmware: Add memory
 pool for DSP i/o buffers

This memory region is used by the DRM/accel driver to allocate addresses
for buffers that are used for communication with the DSP cores and for
their intermediate results.

Signed-off-by: Tomeu Vizoso <tomeu@...euvizoso.net>
---
 arch/arm64/boot/dts/ti/k3-j722s-ti-ipc-firmware.dtsi | 11 +++++++++--
 1 file changed, 9 insertions(+), 2 deletions(-)

diff --git a/arch/arm64/boot/dts/ti/k3-j722s-ti-ipc-firmware.dtsi b/arch/arm64/boot/dts/ti/k3-j722s-ti-ipc-firmware.dtsi
index 3fbff927c4c08bce741555aa2753a394b751144f..b80d2a5a157ad59eaed8e57b22f1f4bce4765a85 100644
--- a/arch/arm64/boot/dts/ti/k3-j722s-ti-ipc-firmware.dtsi
+++ b/arch/arm64/boot/dts/ti/k3-j722s-ti-ipc-firmware.dtsi
@@ -42,6 +42,11 @@ c7x_0_memory_region: memory@...00000 {
 		no-map;
 	};

+	c7x_iova_pool: iommu-pool@...00000 {
+		reg = <0x00 0xa7000000 0x00 0x18200000>;
+		no-map;
+	};
+
 	c7x_1_dma_memory_region: memory@...00000 {
 		compatible = "shared-dma-pool";
 		reg = <0x00 0xa4000000 0x00 0x100000>;
@@ -151,13 +156,15 @@ &main_r5fss0_core0 {
 &c7x_0 {
 	mboxes = <&mailbox0_cluster2 &mbox_c7x_0>;
 	memory-region = <&c7x_0_dma_memory_region>,
-			<&c7x_0_memory_region>;
+			<&c7x_0_memory_region>,
+			<&c7x_iova_pool>;
 	status = "okay";
 };

 &c7x_1 {
 	mboxes = <&mailbox0_cluster3 &mbox_c7x_1>;
 	memory-region = <&c7x_1_dma_memory_region>,
-			<&c7x_1_memory_region>;
+			<&c7x_1_memory_region>,
+			<&c7x_iova_pool>;
 	status = "okay";
 };

-- 
2.52.0