[PATCH net-next v4 0/3] Add the dwmac driver support for T-HEAD TH1520 SoC

[Drew Fustini]

This series adds support for dwmac gigabit ethernet in the T-Head TH1520
RISC-V SoC along with dts patches to enable the ethernet ports on the
BeagleV Ahead and the LicheePi 4A.

The pinctrl-th1520 driver, pinctrl binding, and related dts patches are
in linux-next so there are no longer any prerequisite series that need
to be applied first.

Changes in v4:
 - Rebase on next for pinctrl dependency
 - Add 'net-next' prefix to subject per maintainer-netdev.rst
 - Add clocks, clock-names, interrupts and interrupt-names to binding
 - Simplify driver code by switching from regmap to regualar mmio

Changes in v3:
 - Rebase on v6.12-rc1
 - Remove thead,rx-internal-delay and thead,tx-internal-delay properties
 - Remove unneeded call to thead_dwmac_fix_speed() during probe
 - Fix filename for the yaml file in MAINTAINERS patch
 - Link: https://lore.kernel.org/linux-riscv/20240930-th1520-dwmac-v3-0-ae3e03c225ab@tenstorrent.com/

Changes in v2:
 - Drop the first patch as it is no longer needed due to upstream commit
   d01e0e98de31 ("dt-bindings: net: dwmac: Validate PBL for all IP-cores")
 - Rename compatible from "thead,th1520-dwmac" to "thead,th1520-gmac"
 - Add thead,rx-internal-delay and thead,tx-internal-delay properties
   and check that it does not exceed the maximum value
 - Convert from stmmac_dvr_probe() to devm_stmmac_pltfr_probe() and
   delete the .remove_new hook as it is no longer needed
 - Handle return value of regmap_write() in case it fails
 - Add phy reset delay properties to the BeagleV Ahead device tree
 - Link: https://lore.kernel.org/linux-riscv/20240926-th1520-dwmac-v2-0-f34f28ad1dc9@tenstorrent.com/

Changes in v1:
 - remove thead,gmacapb that references syscon for APB registers
 - add a second memory region to gmac nodes for the APB registers
 - Link: https://lore.kernel.org/all/20240713-thead-dwmac-v1-0-81f04480cd31@tenstorrent.com/

---
Emil Renner Berthing (1):
      riscv: dts: thead: Add TH1520 ethernet nodes

Jisheng Zhang (2):
      dt-bindings: net: Add T-HEAD dwmac support
      net: stmmac: Add glue layer for T-HEAD TH1520 SoC

 .../devicetree/bindings/net/snps,dwmac.yaml        |   1 +
 .../devicetree/bindings/net/thead,th1520-gmac.yaml | 115 +++++++++
 MAINTAINERS                                        |   2 +
 arch/riscv/boot/dts/thead/th1520-beaglev-ahead.dts |  91 +++++++
 .../boot/dts/thead/th1520-lichee-module-4a.dtsi    | 119 +++++++++
 arch/riscv/boot/dts/thead/th1520.dtsi              |  50 ++++
 drivers/net/ethernet/stmicro/stmmac/Kconfig        |  10 +
 drivers/net/ethernet/stmicro/stmmac/Makefile       |   1 +
 drivers/net/ethernet/stmicro/stmmac/dwmac-thead.c  | 268 +++++++++++++++++++++
 9 files changed, 657 insertions(+)
---
base-commit: f2493655d2d3d5c6958ed996b043c821c23ae8d3
change-id: 20241020-th1520-dwmac-e14cc8f8427b

Best regards,
-- 
Drew Fustini <dfustini at tenstorrent.com>