diff --git a/FunKey/board/funkey/patches/linux/0018_SPI_DMA_in_dtsi.patch b/FunKey/board/funkey/patches/linux/0018_SPI_DMA_in_dtsi.patch
new file mode 100644
index 0000000..58ab1a6
--- /dev/null
+++ b/FunKey/board/funkey/patches/linux/0018_SPI_DMA_in_dtsi.patch
@@ -0,0 +1,55 @@
+From 3b489a63e4e05489411a032cb60d8939a81f14b7 Mon Sep 17 00:00:00 2001
+From: vincent <vbusoenseirb@gmail.com>
+Date: Tue, 5 Nov 2019 18:53:47 +0100
+Subject: [PATCH] added SPI DMA declaration in device tree and bigger tx_buf
+ size in fbtft (1 byte more to support start byte)
+
+---
+ arch/arm/boot/dts/sun8i-v3s-funkey.dts | 3 ++-
+ arch/arm/boot/dts/sun8i-v3s.dtsi       | 2 ++
+ drivers/staging/fbtft/fbtft-core.c     | 2 +-
+ 3 files changed, 5 insertions(+), 2 deletions(-)
+
+diff --git a/arch/arm/boot/dts/sun8i-v3s-funkey.dts b/arch/arm/boot/dts/sun8i-v3s-funkey.dts
+index 78f4d6a..19062fc 100644
+--- a/arch/arm/boot/dts/sun8i-v3s-funkey.dts
++++ b/arch/arm/boot/dts/sun8i-v3s-funkey.dts
+@@ -176,7 +176,8 @@
+                compatible = "sitronix,st7789v";
+                reg = <0>;
+                spi-max-frequency = <50000000>;
+-               txbuflen = <115200>;
++               txbuflen = <115202>;
++//               txbuflen = <0>;
+                rotate = <0>;
+                fps = <50>;
+                buswidth = <8>;
+diff --git a/arch/arm/boot/dts/sun8i-v3s.dtsi b/arch/arm/boot/dts/sun8i-v3s.dtsi
+index 02f6c84..f5ca5a5 100644
+--- a/arch/arm/boot/dts/sun8i-v3s.dtsi
++++ b/arch/arm/boot/dts/sun8i-v3s.dtsi
+@@ -539,6 +539,8 @@
+ 			interrupts = <GIC_SPI 65 IRQ_TYPE_LEVEL_HIGH>;
+ 			clocks = <&ccu CLK_BUS_SPI0>, <&ccu CLK_SPI0>;
+ 			clock-names = "ahb", "mod";
++			dmas = <&dma 23>, <&dma 23>;
++			dma-names = "rx", "tx";
+ 			pinctrl-names = "default";
+ 			pinctrl-0 = <&spi0_pins>;
+ 			resets = <&ccu RST_BUS_SPI0>;
+diff --git a/drivers/staging/fbtft/fbtft-core.c b/drivers/staging/fbtft/fbtft-core.c
+index 7fbf92e..7dce967 100755
+--- a/drivers/staging/fbtft/fbtft-core.c
++++ b/drivers/staging/fbtft/fbtft-core.c
+@@ -840,7 +840,7 @@ struct fb_info *fbtft_framebuffer_alloc(struct fbtft_display *display,
+ 	/* Transmit buffer */
+ 	if (txbuflen == -1)
+ 		txbuflen = vmem_size + 2; /* add in case startbyte is used */
+-	if (txbuflen >= vmem_size + 2)
++	if (txbuflen > vmem_size + 2)
+ 		txbuflen = 0;
+ 
+ #ifdef __LITTLE_ENDIAN
+-- 
+1.9.1
+