README: update with GW1N-1, ch552 and Sipeed Tang Nano

README.md

@@ -7,10 +7,11 @@ __Current support kits:__
 * Digilent arty Artix xc7a35ti (memory and spi flash)
 * Lattice MachXO3LF Starter Kit LCMX03LF-6900C (memory and flash)
 * [Trenz Gowin LittleBee (TEC0117)](https://shop.trenz-electronic.de/en/TEC0117-01-FPGA-Module-with-GOWIN-LittleBee-and-8-MByte-internal-SDRAM)
+* [Sipeed Tang Nano](https://tangnano.sipeed.com/en/) (memory)
 
 __Supported (tested) FPGA:__
 
-* Gowin [GW1N (GW1NR-9)](https://www.gowinsemi.com/en/product/detail/2/) (SRAM and Flash)
+* Gowin [GW1N (GW1N-1, GW1NR-9)](https://www.gowinsemi.com/en/product/detail/2/) (SRAM and Flash (flash mode only tested with GW1NR-9))
 * Lattice [MachXO3LF](http://www.latticesemi.com/en/Products/FPGAandCPLD/MachXO3.aspx) (SRAM and Flash)
 * Xilinx Artix 7 [xc7a35ti](https://www.xilinx.com/products/silicon-devices/fpga/artix-7.html) (memory and spi flash)
 * Intel Cyclone 10 LP [10CL025](https://www.intel.com/content/www/us/en/products/programmable/fpga/cyclone-10.html)
@@ -19,6 +20,8 @@ __Supported cables:__
 
 * JTAG-HS3: jtag programmer cable from digilent
 * FT2232: generic programmer cable based on Ftdi FT2232
+* Tang Nano USB-JTAG interface: FT2232C clone based on CH552 microcontroler
+  (with some limitations and workaround)
 
 ## compile and install
 
@@ -196,7 +199,7 @@ __file load__:
 openFPGALoader -b machXO3SK impl1/*.bit
 ```
 
-### Trenz GOWIN LittleBee (TEC0117)
+### Trenz GOWIN LittleBee (TEC0117) and Sipeed Tang Nano
 
 *.fs* file is the default format generated by *Gowin IDE*, so nothing
 special must be done to generates this file.
@@ -208,12 +211,16 @@ specify the destination.
 
 with **-m**
 
-__file load__:
+__file load (Trenz)__:
 ```bash
 openFPGALoader -m -b littleBee impl/pnr/*.fs
 ```
+__file load (Tang Nano)__:
+```bash
+openFPGALoader -m -b tangnano impl/pnr/*.fs
+```
 
-#### Flash:
+#### Flash (only with Trenz board):
 
 with **-f**