This adds a DWMAC glue driver for the PRG_ETHERNET registers found in Meson8b and GXBB SoCs. Based on the "old" meson6b-dwmac glue driver the register layout is completely different. Thus I introduced a separate driver. Changes compared to the RFC version: - switch from syscon / regmap to assigning the corresponding register region directly to the driver (like meson6-dwmac does it) - dropped "fix_mac_speed" callback since the reference driver does not implement it (I could not test if it is required due to lack of hardware) - switch to common clock framework now that we know what bits 5:4 (mux clock), 6:5 (250MHz divider) and 10 (configurable 5 or 10 divider) are used for - Removed dts property "amlogic,mp2-clock" because it is now part of the clocks which are registered by the glue driver - Removed dts properties "amlogic,enable-tx-phy-ref-clk" and "amlogic,tx-delay" because it seems we can guess them based on the phy-mode (the original Amlogic dts files only supply two different values: one value for the internal RMII PHY and another one for the external RGMII Gbit PHY). If required we can extend the code in the future to make these configurable. - This means that the only Meson8b / GXBB specific part of the binding is the clkin0 (FCLK_DIV2) clock, as it's needed for the mux clock. Everything else is auto-detected based on the phy-mode (which is already mandatory in stmmac). I have successfully tested this on a Vega S95 Meta clone which comes with a "broken" bootloader (which programs the ethernet registers to "Fast Ethernet / RGMII" mode, while the board has a Realtek Gbit PHY). Before this series stmmac was detected, I got a network interface but no traffic was flowing. Due to lack of hardware I could not test this on a device which uses the internal RMII (Fast Ethernet) PHY. Martin Blumenstingl (3): net: dt-bindings: Document the new Meson8b and GXBB DWMAC bindings net: stmmac: add a glue driver for the Amlogic Meson 8b / GXBB DWMAC ARM64: dts: meson-gxbb: use the new GXBB DWMAC glue driver .../devicetree/bindings/net/meson-dwmac.txt | 43 ++- arch/arm64/boot/dts/amlogic/meson-gxbb.dtsi | 7 +- drivers/net/ethernet/stmicro/stmmac/Makefile | 2 +- .../net/ethernet/stmicro/stmmac/dwmac-meson8b.c | 327 +++++++++++++++++++++ 4 files changed, 367 insertions(+), 12 deletions(-) create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-meson8b.c -- 2.9.3 -- To unsubscribe from this list: send the line "unsubscribe devicetree" in the body of a message to majordomo@xxxxxxxxxxxxxxx More majordomo info at http://vger.kernel.org/majordomo-info.html
