TH1520 SoC integrates two MAC controllers based on Designware IP that could operate at 1 Gbps. This series ports the MAC glue driver from Linux, and then enables networking on the TH1520-based Lichee Pi 4A board.
The driver could send and receive data correctly under link speed of 10Mbps, 100Mbps and 1Gbps. Under 1Gbps, tftp could transfer data at more than 10MiB/s. Note the bug fixed by the first patch doesn't cause any problem with existing supported peripherals, thus the fix isn't urgent. Yao Zi (5): clk: thead: th1520-ap: Correctly handle flags for dividers riscv: cpu: th1520: Limit upper RAM boundary to 4 GiB drivers: net: Add T-Head DWMAC glue layer riscv: dts: th1520: Describe GMACs and enable them on Lichee Pi 4A configs: th1520_lpi4a: Enable network support MAINTAINERS | 1 + arch/riscv/cpu/th1520/dram.c | 16 ++ arch/riscv/dts/th1520-lichee-module-4a.dtsi | 119 ++++++++ arch/riscv/dts/th1520.dtsi | 42 +++ configs/th1520_lpi4a_defconfig | 7 +- drivers/clk/thead/clk-th1520-ap.c | 4 +- drivers/net/Kconfig | 8 + drivers/net/Makefile | 1 + drivers/net/dwmac_thead.c | 288 ++++++++++++++++++++ 9 files changed, 484 insertions(+), 2 deletions(-) create mode 100644 drivers/net/dwmac_thead.c -- 2.50.0
