mediatek: backport recent DTS improvements for MT7622 SoC

Daniel Golle:
 190-arm64-dts-mediatek-mt7622-fix-GICv2-range.patch

Rui Salvaterra:
 191-arm64-dts-mt7622-specify-the-L2-cache-topology.patch
 192-arm64-dts-mt7622-specify-the-number-of-DMA-requests.patch

Signed-off-by: Daniel Golle <daniel@makrotopia.org>

1 files changed, 106 insertions, 0 deletions

diff --git a/target/linux/mediatek/patches-5.15/190-arm64-dts-mediatek-mt7622-fix-GICv2-range.patch b/target/linux/mediatek/patches-5.15/190-arm64-dts-mediatek-mt7622-fix-GICv2-range.patch
new file mode 100644
index 0000000000..39a9770d98
--- /dev/null
+++ b/target/linux/mediatek/patches-5.15/190-arm64-dts-mediatek-mt7622-fix-GICv2-range.patch
@@ -0,0 +1,106 @@
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+Date: Tue, 26 Apr 2022 20:51:36 +0100
+From: Daniel Golle <daniel@makrotopia.org>
+To: devicetree@vger.kernel.org, linux-mediatek@lists.infradead.org,
+ linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org
+Cc: Rob Herring <robh+dt@kernel.org>,
+ Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>,
+ Matthias Brugger <matthias.bgg@gmail.com>
+Subject: [PATCH] arm64: dts: mediatek: mt7622: fix GICv2 range
+Message-ID: <YmhNSLgp/yg8Vr1F@makrotopia.org>
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+
+With the current range specified for the CPU interface there is an
+error message at boot:
+
+GIC: GICv2 detected, but range too small and irqchip.gicv2_force_probe not set
+
+Setting irqchip.gicv2_force_probe=1 in bootargs results in:
+
+GIC: Aliased GICv2 at 0x0000000010320000, trying to find the canonical range over 128kB
+GIC: Adjusting CPU interface base to 0x000000001032f000
+GIC: Using split EOI/Deactivate mode
+
+Using the adjusted CPU interface base and 8K size results in only the
+final line remaining and fully working system as well as /proc/interrupts
+showing additional IPI3,4,5,6:
+
+IPI3:         0          0       CPU stop (for crash dump) interrupts
+IPI4:         0          0       Timer broadcast interrupts
+IPI5:         0          0       IRQ work interrupts
+IPI6:         0          0       CPU wake-up interrupts
+
+Signed-off-by: Daniel Golle <daniel@makrotopia.org>
+---
+ arch/arm64/boot/dts/mediatek/mt7622.dtsi | 2 +-
+ 1 file changed, 1 insertion(+), 1 deletion(-)
+
+--- a/arch/arm64/boot/dts/mediatek/mt7622.dtsi
++++ b/arch/arm64/boot/dts/mediatek/mt7622.dtsi
+@@ -339,7 +339,7 @@
+ 		#interrupt-cells = <3>;
+ 		interrupt-parent = <&gic>;
+ 		reg = <0 0x10310000 0 0x1000>,
+-		      <0 0x10320000 0 0x1000>,
++		      <0 0x1032f000 0 0x2000>,
+ 		      <0 0x10340000 0 0x2000>,
+ 		      <0 0x10360000 0 0x2000>;
+ 	};