diff --git a/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.bin b/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.bin
new file mode 100644
index 000000000..63896b607
Binary files /dev/null and b/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.bin differ
diff --git a/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.txt b/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.txt
new file mode 100644
index 000000000..04d6f9218
--- /dev/null
+++ b/package/firmware/linux-firmware/brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.txt
@@ -0,0 +1,125 @@
+# Sample variables file for BCM94356Z NGFF 22x30mm iPA, iLNA board with PCIe for production package
+NVRAMRev=$Rev: 492104 $
+#4356 chip = 4354 A2 chip
+sromrev=11
+boardrev=0x1102
+boardtype=0x073e
+boardflags=0x02400201
+#0x2000 enable 2G spur WAR
+boardflags2=0x00802000
+boardflags3=0x0000000a
+#boardflags3 0x00000100 /* to read swctrlmap from nvram*/
+#define BFL3_5G_SPUR_WAR   0x00080000   /* enable spur WAR in 5G band */
+#define BFL3_AvVim   0x40000000   /* load AvVim from nvram */
+macaddr=00:90:4c:1a:10:01
+ccode=0x5854
+regrev=205
+antswitch=0
+pdgain5g=4
+pdgain2g=4
+tworangetssi2g=0
+tworangetssi5g=0
+paprdis=0
+femctrl=10
+vendid=0x14e4
+devid=0x43ec
+manfid=0x2d0
+#prodid=0x052e
+nocrc=1
+otpimagesize=502
+xtalfreq=37400
+rxgains2gelnagaina0=0
+rxgains2gtrisoa0=7
+rxgains2gtrelnabypa0=0
+rxgains5gelnagaina0=0
+rxgains5gtrisoa0=11
+rxgains5gtrelnabypa0=0
+rxgains5gmelnagaina0=0
+rxgains5gmtrisoa0=13
+rxgains5gmtrelnabypa0=0
+rxgains5ghelnagaina0=0
+rxgains5ghtrisoa0=12
+rxgains5ghtrelnabypa0=0
+rxgains2gelnagaina1=0
+rxgains2gtrisoa1=7
+rxgains2gtrelnabypa1=0
+rxgains5gelnagaina1=0
+rxgains5gtrisoa1=10
+rxgains5gtrelnabypa1=0
+rxgains5gmelnagaina1=0
+rxgains5gmtrisoa1=11
+rxgains5gmtrelnabypa1=0
+rxgains5ghelnagaina1=0
+rxgains5ghtrisoa1=11
+rxgains5ghtrelnabypa1=0
+rxchain=3
+txchain=3
+aa2g=3
+aa5g=3
+agbg0=2
+agbg1=2
+aga0=2
+aga1=2
+tssipos2g=1
+extpagain2g=2
+tssipos5g=1
+extpagain5g=2
+tempthresh=255
+tempoffset=255
+rawtempsense=0x1ff
+pa2ga0=-147,6192,-705
+pa2ga1=-161,6041,-701
+pa5ga0=-194,6069,-739,-188,6137,-743,-185,5931,-725,-171,5898,-715
+pa5ga1=-190,6248,-757,-190,6275,-759,-190,6225,-757,-184,6131,-746
+subband5gver=0x4
+pdoffsetcckma0=0x4
+pdoffsetcckma1=0x4
+pdoffset40ma0=0x0000
+pdoffset80ma0=0x0000
+pdoffset40ma1=0x0000
+pdoffset80ma1=0x0000
+maxp2ga0=76
+maxp5ga0=74,74,74,74
+maxp2ga1=76
+maxp5ga1=74,74,74,74
+cckbw202gpo=0x0000
+cckbw20ul2gpo=0x0000
+mcsbw202gpo=0x99644422
+mcsbw402gpo=0x99644422
+dot11agofdmhrbw202gpo=0x6666
+ofdmlrbw202gpo=0x0022
+mcsbw205glpo=0x88766663
+mcsbw405glpo=0x88666663
+mcsbw805glpo=0xbb666665
+mcsbw205gmpo=0xd8666663
+mcsbw405gmpo=0x88666663
+mcsbw805gmpo=0xcc666665
+mcsbw205ghpo=0xdc666663
+mcsbw405ghpo=0xaa666663
+mcsbw805ghpo=0xdd666665
+mcslr5glpo=0x0000
+mcslr5gmpo=0x0000
+mcslr5ghpo=0x0000
+sb20in40hrpo=0x0
+sb20in80and160hr5glpo=0x0
+sb40and80hr5glpo=0x0
+sb20in80and160hr5gmpo=0x0
+sb40and80hr5gmpo=0x0
+sb20in80and160hr5ghpo=0x0
+sb40and80hr5ghpo=0x0
+sb20in40lrpo=0x0
+sb20in80and160lr5glpo=0x0
+sb40and80lr5glpo=0x0
+sb20in80and160lr5gmpo=0x0
+sb40and80lr5gmpo=0x0
+sb20in80and160lr5ghpo=0x0
+sb40and80lr5ghpo=0x0
+dot11agduphrpo=0x0
+dot11agduplrpo=0x0
+phycal_tempdelta=255
+temps_period=15
+temps_hysteresis=15
+rssicorrnorm_c0=4,4
+rssicorrnorm_c1=4,4
+rssicorrnorm5g_c0=1,2,3,1,2,3,6,6,8,6,6,8
+rssicorrnorm5g_c1=1,2,3,2,2,2,7,7,8,7,7,8
diff --git a/package/firmware/linux-firmware/broadcom.mk b/package/firmware/linux-firmware/broadcom.mk
index 571cb0255..6e0ba7e3a 100644
--- a/package/firmware/linux-firmware/broadcom.mk
+++ b/package/firmware/linux-firmware/broadcom.mk
@@ -128,3 +128,11 @@ define Package/station-p2-firmware/install
 	$(INSTALL_DATA) ./brcm_firmware/ap6275s/nvram_ap6275s.txt $(1)/lib/firmware/brcm/brcmfmac43752-sdio.firefly,rk3568-roc-pc.txt
 endef
 $(eval $(call BuildPackage,station-p2-firmware))
+
+Package/rongpin-king3399-firmware = $(call Package/firmware-default,Broadcom FullMac SDIO firmware)
+define Package/rongpin-king3399-firmware/install
+	$(INSTALL_DIR) $(1)/lib/firmware/brcm
+	$(INSTALL_DATA) ./brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.bin $(1)/lib/firmware/brcm/brcmfmac4356-sdio.rongpin,king3399.bin
+	$(INSTALL_DATA) ./brcm_firmware/ap6356s/brcmfmac4356-sdio.rongpin,king3399.txt $(1)/lib/firmware/brcm/brcmfmac4356-sdio.rongpin,king3399.txt
+endef
+$(eval $(call BuildPackage,rongpin-king3399-firmware))