linux-kernel - [PATCH v3 0/3] net: stmmac: socfpga: support both stmmaceth-ocp and ahb reset names

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Message-Id: <20260108-remove_ocp-v3-0-ea0190244b4c@kernel.org>
Date: Thu, 08 Jan 2026 07:08:08 -0600
From: Dinh Nguyen <dinguyen@...nel.org>
To: Maxime Chevallier <maxime.chevallier@...tlin.com>, 
 Andrew Lunn <andrew+netdev@...n.ch>, 
 "David S. Miller" <davem@...emloft.net>, Eric Dumazet <edumazet@...gle.com>, 
 Jakub Kicinski <kuba@...nel.org>, Paolo Abeni <pabeni@...hat.com>, 
 Maxime Coquelin <mcoquelin.stm32@...il.com>, 
 Alexandre Torgue <alexandre.torgue@...s.st.com>, 
 Philipp Zabel <p.zabel@...gutronix.de>, Rob Herring <robh@...nel.org>, 
 Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, 
 Mamta Shukla <mamta.shukla@...ca-geosystems.com>, 
 Ahmad Fatoum <a.fatoum@...gutronix.de>
Cc: bsp-development.geo@...ca-geosystems.com, 
 Pengutronix Kernel Team <kernel@...gutronix.de>, netdev@...r.kernel.org, 
 linux-stm32@...md-mailman.stormreply.com, 
 linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org, 
 devicetree@...r.kernel.org, Dinh Nguyen <dinguyen@...nel.org>
Subject: [PATCH v3 0/3] net: stmmac: socfpga: support both stmmaceth-ocp
 and ahb reset names

The dwmac-socfpga stmmac ethernet controller supports 2 standard reset
lines, named "stmmaceth" and "stmmaceth-ocp". At the time of upstreaming
support for the platform, the "stmmaceth-ocp" name was used for the 2nd
reset name. We later realized that the "stmmaceth-ocp" reset name is
the same as the "ahb" name that is used by the standard stmmac driver.
But since the "stmmaceth-ocp" name support has already been introduced
to the wild, it cannot just be removed from the driver, thus we can
modify the driver to support both "stmmaceth-ocp" and "ahb", with the
idea that "ahb" will be used going forward.

This series add the support to call reset assert/de-assert both "abh"
and "stmmaceth-ocp" to the dwmac-socfpga platform driver, then reverts
the patch that uses the DTS "stmmaceth-ocp" reset name.

Signed-off-by: Dinh Nguyen <dinguyen@...nel.org>
---
Changes in v3:
- Edit dt-bindings patch to just remove TODO note
- Link to v2: https://lore.kernel.org/r/20260105-remove_ocp-v2-0-4fa2bda09521@kernel.org

Changes in v2:
- Added a dt-binding patch to mark 'stmmaceth-ocp' as deprecated
- Link to v1: https://lore.kernel.org/r/20251229-remove_ocp-v1-0-594294e04bd4@kernel.org

---
Dinh Nguyen (3):
      net: stmmac: socfpga: add call to assert/deassert ahb reset line
      Revert "arm: dts: socfpga: use reset-name "stmmaceth-ocp" instead of "ahb""
      dt-bindings: net: altr,socfpga-stmmac: remove TODO note

 Documentation/devicetree/bindings/net/altr,socfpga-stmmac.yaml | 2 --
 arch/arm/boot/dts/intel/socfpga/socfpga_arria10.dtsi           | 6 +++---
 drivers/net/ethernet/stmicro/stmmac/dwmac-socfpga.c            | 4 ++++
 3 files changed, 7 insertions(+), 5 deletions(-)
---
base-commit: 8f0b4cce4481fb22653697cced8d0d04027cb1e8
change-id: 20251229-remove_ocp-44786389b052

Best regards,
-- 
Dinh Nguyen <dinguyen@...nel.org>