[v5,00/16] Add support for Synopsis DWMAC IP on NXP Automotive SoCs S32G2xx/S32G3xx/S32R45

Message

Jan Petrous via B4 Relay Nov. 19, 2024, 3 p.m. UTC

The SoC series S32G2xx and S32G3xx feature one DWMAC instance,
the SoC S32R45 has two instances. The devices can use RGMII/RMII/MII
interface over Pinctrl device or the output can be routed
to the embedded SerDes for SGMII connectivity.

The provided stmmac glue code implements only basic functionality,
interface support is restricted to RGMII only. More, including
SGMII/SerDes support will come later.

This patchset adds stmmac glue driver based on downstream NXP git [0].

[0] https://github.com/nxp-auto-linux/linux

v5:
- yaml: refactored compatible string to use fallback
- yaml: fix indention in example
- fix xmas tree formating in local variable declarations
- removed lazy rx clk setup
- drop PTP clock reading patch and replace it with stmmac_platform fix

v4:
- fixed empty commit messages for rgmi_clock() helper patches
- fixed yaml path in MAINTAINERS
- switched to platform_driver::remove() as suggested Uwe
- yaml: returned back all compatibility sting values
- added better commit description for rgmii_clock() helper
- Link to v3: https://lore.kernel.org/r/[e-mail]

v3:
- switched to b4 WoW to overcome threading issue with b4
- extracted the hunk with the typo fix from v2 patch#1 to separate patch
  as Jacob suggested
- removed dead code for RMII/MII support, which will be added alter
- used new rgmii_clock() helper in other stmmac:dwmac glue drivers
- yaml: compatible strings compressed to simple one "nxp,s32-dwmac",
  removed duplicated required properties, already defined in snps,dwmac,
  fixed example

v2:
- send to wider audience as first version missed many maintainers
- created rgmi_clk() helper as Russell suggested (see patch#4)
- address Andrew's, Russell's, Serge's and Simon's comments

Message-ID: <[e-mail]>

Cc: 

Signed-off-by: Jan Petrous (OSS) <[e-mail]>
---
Changes in v5:
- EDITME: describe what is new in this series revision.
- EDITME: use bulletpoints and terse descriptions.
- Link to v4: https://lore.kernel.org/r/[e-mail]

---
Jan Petrous (OSS) (16):
      net: driver: stmmac: Fix CSR divider comment
      net: driver: stmmac: Extend CSR calc support
      net: stmmac: Fix clock rate variables size
      net: phy: Add helper for mapping RGMII link speed to clock rate
      net: dwmac-dwc-qos-eth: Use helper rgmii_clock
      net: dwmac-imx: Use helper rgmii_clock
      net: dwmac-intel-plat: Use helper rgmii_clock
      net: dwmac-rk: Use helper rgmii_clock
      net: dwmac-starfive: Use helper rgmii_clock
      net: macb: Use helper rgmii_clock
      net: xgene_enet: Use helper rgmii_clock
      net: dwmac-sti: Use helper rgmii_clock
      dt-bindings: net: Add DT bindings for DWMAC on NXP S32G/R SoCs
      net: stmmac: dwmac-s32: add basic NXP S32G/S32R glue driver
      MAINTAINERS: Add Jan Petrous as the NXP S32G/R DWMAC driver maintainer
      net: stmmac: platform: Fix PTP clock rate reading

 .../devicetree/bindings/net/nxp,s32-dwmac.yaml     | 105 +++++++++++
 .../devicetree/bindings/net/snps,dwmac.yaml        |   3 +
 MAINTAINERS                                        |   7 +
 drivers/net/ethernet/apm/xgene/xgene_enet_hw.c     |  16 +-
 drivers/net/ethernet/cadence/macb_main.c           |  14 +-
 drivers/net/ethernet/stmicro/stmmac/Kconfig        |  12 ++
 drivers/net/ethernet/stmicro/stmmac/Makefile       |   1 +
 drivers/net/ethernet/stmicro/stmmac/common.h       |   2 +
 .../ethernet/stmicro/stmmac/dwmac-dwc-qos-eth.c    |  11 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac-imx.c    |  15 +-
 .../net/ethernet/stmicro/stmmac/dwmac-intel-plat.c |  20 +-
 .../ethernet/stmicro/stmmac/dwmac-qcom-ethqos.c    |   2 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac-rk.c     |  30 +--
 drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c    | 204 +++++++++++++++++++++
 .../net/ethernet/stmicro/stmmac/dwmac-starfive.c   |  19 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac-sti.c    |  18 +-
 drivers/net/ethernet/stmicro/stmmac/dwmac4_core.c  |   2 +-
 drivers/net/ethernet/stmicro/stmmac/stmmac_main.c  |   6 +-
 .../net/ethernet/stmicro/stmmac/stmmac_platform.c  |   4 +-
 include/linux/phy.h                                |  23 +++
 include/linux/stmmac.h                             |  10 +-
 21 files changed, 404 insertions(+), 120 deletions(-)
---
base-commit: 158f238aa69d91ad74e535c73f552bd4b025109c
change-id: 20240923-upstream_s32cc_gmac-6891eb75b126

Best regards,

Comments

Russell King (Oracle) Nov. 19, 2024, 4:40 p.m. UTC | #1

Hi,

On Tue, Nov 19, 2024 at 04:00:06PM +0100, Jan Petrous via B4 Relay wrote:
> The SoC series S32G2xx and S32G3xx feature one DWMAC instance,
> the SoC S32R45 has two instances. The devices can use RGMII/RMII/MII
> interface over Pinctrl device or the output can be routed
> to the embedded SerDes for SGMII connectivity.
> 
> The provided stmmac glue code implements only basic functionality,
> interface support is restricted to RGMII only. More, including
> SGMII/SerDes support will come later.
> 
> This patchset adds stmmac glue driver based on downstream NXP git [0].

A few things for the overall series:

1. Note that net-next is closed due to the merge window, so patches should
   be sent as RFC.

2. The formatting of the subject line should include the tree to which
   you wish the patches to be applied - that being net-next for
   development work.

For more information, see:

https://kernel.org/doc/html/v6.12/process/maintainer-netdev.html#netdev-faq