linux-kernel - [PATCH 1/1] arm64: dts: tqmls1046a: Move BMAN/QMAN buffers to DRAM1 area

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Message-ID: <20251201070333.6804-1-alexander.stein@ew.tq-group.com>
Date: Mon,  1 Dec 2025 08:03:33 +0100
From: Alexander Stein <alexander.stein@...tq-group.com>
To: Shawn Guo <shawnguo@...nel.org>,
	Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>
Cc: Alexander Stein <alexander.stein@...tq-group.com>,
	linux@...tq-group.com,
	linux-arm-kernel@...ts.infradead.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org
Subject: [PATCH 1/1] arm64: dts: tqmls1046a: Move BMAN/QMAN buffers to DRAM1 area

DRAM1 is only 2GiB in size (0x00_8000_0000 - 0x01_0000_0000) which is
already used by Linux kernel, etc. Move the allocation area of BMAN and
QMAN to DRAM1 region. This frees the complete DRAM2 area for e.g. CMA.

Signed-off-by: Alexander Stein <alexander.stein@...tq-group.com>
---
There is a project which needs the upper 2GiB as CMA memory, so these
buffers needs to move. This range also works for 1GiB RAM module
variants.

 .../boot/dts/freescale/fsl-ls1046a-tqmls1046a.dtsi   | 12 ++++++++++++
 1 file changed, 12 insertions(+)

diff --git a/arch/arm64/boot/dts/freescale/fsl-ls1046a-tqmls1046a.dtsi b/arch/arm64/boot/dts/freescale/fsl-ls1046a-tqmls1046a.dtsi
index fa543db99def6..7059ab8bc9d46 100644
--- a/arch/arm64/boot/dts/freescale/fsl-ls1046a-tqmls1046a.dtsi
+++ b/arch/arm64/boot/dts/freescale/fsl-ls1046a-tqmls1046a.dtsi
@@ -10,6 +10,18 @@
 #include "fsl-ls1046a.dtsi"
 #include "tqmls10xxa.dtsi"
 
+&bman_fbpr {
+	alloc-ranges = <0 0x88000000 1 0x00000000>;
+};
+
+&qman_fqd {
+	alloc-ranges = <0 0x88000000 1 0x00000000>;
+};
+
+&qman_pfdr {
+	alloc-ranges = <0 0x88000000 1 0x00000000>;
+};
+
 &qspi {
 	num-cs = <2>;
 	status = "okay";
-- 
2.43.0