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Date:   Mon, 31 Oct 2022 18:10:47 +0800
From:   Chester Lin <>
To:     Giuseppe Cavallaro <>,
        Alexandre Torgue <>,
        Jose Abreu <>,
        "David S. Miller" <>,
        Eric Dumazet <>,
        Jakub Kicinski <>,
        Paolo Abeni <>,
        Rob Herring <>,
        Krzysztof Kozlowski <>,
        Jan Petrous <>,
        Ondrej Spacek <>,
        Ghennadi Procopciuc <>
Cc:     Chester Lin <>,,,,,,
        Andreas Färber <>,
        Matthias Brugger <>
Subject: [PATCH 0/5] Add GMAC support for S32 SoC family


Here I want to introduce a new patch series, which aims to support GMAC
functions on S32 SoCs, such as S32G2. This series is originally from NXP's
implementation on CodeAurora[1] and it will be required by upstream kernel
to configure platform settings at the DWMAC glue layer before activating
the DWMAC core on different S32G boards. In this patchset I also introduce
more register fields needed by S32 SoCs, such as higher CSR clock ranges
and cache coherency settings. For more information please see NXP's
GMACSUBSYS Reference Manual[2].

Currently, the whole architecture relies on FDTs offered by ATF[3] on
CodeAurora to keep the flexibility of handling multiple S32 platforms since
now S32 clks can be triggered via the ARM SCMI clock protocol and clk IDs/
settings can vary according to different board designs. To ensure that the
driver can work properly, the dt-binding schemas in this patchset is still
required as a reference.



Chester Lin (5):
  dt-bindings: net: snps, dwmac: add NXP S32CC support
  dt-bindings: net: add schema for NXP S32CC dwmac glue driver
  net: stmmac: Add CSR clock 500Mhz/800Mhz support
  net: stmmac: Add AXI4 ACE control support
  net: stmmac: Add NXP S32 SoC family support

 .../bindings/net/nxp,s32cc-dwmac.yaml         | 145 ++++++++
 .../devicetree/bindings/net/snps,dwmac.yaml   |   5 +-
 drivers/net/ethernet/stmicro/stmmac/Kconfig   |  13 +
 drivers/net/ethernet/stmicro/stmmac/Makefile  |   1 +
 drivers/net/ethernet/stmicro/stmmac/common.h  |   2 +
 .../net/ethernet/stmicro/stmmac/dwmac-s32cc.c | 318 ++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.c  |  10 +
 .../net/ethernet/stmicro/stmmac/dwmac4_dma.h  |   4 +-
 drivers/net/ethernet/stmicro/stmmac/hwif.h    |   5 +
 .../net/ethernet/stmicro/stmmac/stmmac_main.c |   7 +
 include/linux/stmmac.h                        |   9 +
 11 files changed, 516 insertions(+), 3 deletions(-)
 create mode 100644 Documentation/devicetree/bindings/net/nxp,s32cc-dwmac.yaml
 create mode 100644 drivers/net/ethernet/stmicro/stmmac/dwmac-s32cc.c


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