diff --git a/target/linux/mediatek/patches-5.4/1662-trng-Add-trng-support-for-mt7988.patch b/target/linux/mediatek/patches-5.4/1662-trng-Add-trng-support-for-mt7988.patch
new file mode 100644
index 0000000..a8f1dfe
--- /dev/null
+++ b/target/linux/mediatek/patches-5.4/1662-trng-Add-trng-support-for-mt7988.patch
@@ -0,0 +1,38 @@
+From cbd37bfc8221c1a81d235ddfb1898536a821c650 Mon Sep 17 00:00:00 2001
+From: "mingming.su" <Mingming.Su@mediatek.com>
+Date: Wed, 7 Sep 2022 15:44:46 +0800
+Subject: [PATCH] trng: Add trng support for mt7988
+
+Add trng support for mt7988.
+
+Signed-off-by: mingming.su <Mingming.Su@mediatek.com>
+---
+ drivers/char/hw_random/mtk-rng.c | 5 +++++
+ 1 file changed, 5 insertions(+)
+
+diff --git a/drivers/char/hw_random/mtk-rng.c b/drivers/char/hw_random/mtk-rng.c
+index 75fca4cef..878170c15 100644
+--- a/drivers/char/hw_random/mtk-rng.c
++++ b/drivers/char/hw_random/mtk-rng.c
+@@ -231,6 +231,10 @@ static const struct mtk_rng_of_data mt7986_rng_data = {
+ 	.rng_version = 1,
+ };
+ 
++static const struct mtk_rng_of_data mt7988_rng_data = {
++	.rng_version = 2,
++};
++
+ static const struct mtk_rng_of_data mt7623_rng_data = {
+ 	.rng_version = 1,
+ };
+@@ -238,6 +242,7 @@ static const struct mtk_rng_of_data mt7623_rng_data = {
+ static const struct of_device_id mtk_rng_match[] = {
+ 	{ .compatible = "mediatek,mt7981-rng", .data = &mt7981_rng_data },
+ 	{ .compatible = "mediatek,mt7986-rng", .data = &mt7986_rng_data },
++	{ .compatible = "mediatek,mt7988-rng", .data = &mt7988_rng_data },
+ 	{ .compatible = "mediatek,mt7623-rng", .data = &mt7623_rng_data },
+ 	{},
+ };
+-- 
+2.18.0
+