mediatek: add support for trng on mt7988a

Add support for trng on mt7988a.

Tested on Banana Pi BPI-R4.

Signed-off-by: Marcos Alano <marcoshalano@gmail.com>

diff --git a/target/linux/mediatek/patches-6.12/965-dts-mt7988a-add-trng-support.patch b/target/linux/mediatek/patches-6.12/965-dts-mt7988a-add-trng-support.patch
new file mode 100644 (file)
index 0000000..b6671fe
--- /dev/null
+++ b/target/linux/mediatek/patches-6.12/965-dts-mt7988a-add-trng-support.patch
@@ -0,0 +1,14 @@
+diff --git a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+index aa728331e876..9da783f6412c 100644
+--- a/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
++++ b/arch/arm64/boot/dts/mediatek/mt7988a.dtsi
+@@ -221,4 +221,8 @@ timer {
+                            <GIC_PPI 11 IRQ_TYPE_LEVEL_LOW>,
+                            <GIC_PPI 10 IRQ_TYPE_LEVEL_LOW>;
+       };
++
++      trng {
++              compatible = "mediatek,mt7988-rng";
++      };
+ };
+