[PATCH net-next v5 00/14] macb usrio/tsu patches

Conor Dooley
2026-03-25T16:28:50Z

Hey folks,

At the very least, it'd be good of the soc vendor folks could check
their platforms and see if their usrio stuff actually lines up with what
the driver currently calls "macb_default_usrio". Ours didn't and it was
a nasty surprise.

Ryan and I figured out that the sama7g5 stuff is not actually using the
same usrio bits as earlier devices, so there's now more patches in this
series to split them apart. I've not tested the split or the new
property due to lack of hardware, but Ryan has.

Marking this stuff net-next, because although they're fixes I don't see
any particular urgency, and it avoids creating some dependencies between
cleanup items and the fixes.

Cheers,
Conor.

v5:
- rebase on net-next
- revert one of the commits that landed in net-next in the meantime

v4:
- deprecate instead of remove existing devicetree property
- pick up Theo's patches

v3:
- reorder patches
- fix smatch issue reported by Simon
- add patches reworking usrio handling of clken/refclk (and remove the
issue the llm reported in the process)
- add a new devicetree property for refclk selection, replacing the
existing one.
- drop the dts patch

CC: Valentina.FernandezAlanis@microchip.com
CC: Andrew Lunn <andrew+netdev@lunn.ch>
CC: David S. Miller <davem@davemloft.net>
CC: Eric Dumazet <edumazet@google.com>
CC: Jakub Kicinski <kuba@kernel.org>
CC: Paolo Abeni <pabeni@redhat.com>
CC: Rob Herring <robh@kernel.org>
CC: Krzysztof Kozlowski <krzk+dt@kernel.org>
CC: Conor Dooley <conor+dt@kernel.org>
CC: Daire McNamara <daire.mcnamara@microchip.com>
CC: Paul Walmsley <pjw@kernel.org>
CC: Palmer Dabbelt <palmer@dabbelt.com>
CC: Albert Ou <aou@eecs.berkeley.edu>
CC: Alexandre Ghiti <alex@ghiti.fr>
CC: Nicolas Ferre <nicolas.ferre@microchip.com>
CC: Claudiu Beznea <claudiu.beznea@tuxon.dev>
CC: Richard Cochran <richardcochran@gmail.com>
CC: Samuel Holland <samuel.holland@sifive.com>
CC: netdev@vger.kernel.org
CC: devicetree@vger.kernel.org
CC: linux-kernel@vger.kernel.org
CC: linux-riscv@lists.infradead.org
CC: Dave Stevenson <dave.stevenson@raspberrypi.com>
CC: Sean Anderson <sean.anderson@linux.dev>
CC: Vineeth Karumanchi <vineeth.karumanchi@amd.com>
CC: Abin Joseph <abin.joseph@amd.com>
CC: Théo Lebrun <theo.lebrun@bootlin.com>
CC: Ryan.Wanner@microchip.com
CC: Kevin Hao <haokexin@gmail.com>

Conor Dooley (11):
Revert "net: macb: Clean up the .usrio settings in macb_config
instances"
net: macb: rename macb_default_usrio to at91_default_usrio as not all
platforms have mii mode control in usrio
net: macb: split USRIO_HAS_CLKEN capability in two
dt-bindings: net: cdns,macb: replace cdns,refclk-ext with
cdns,refclk-source
net: macb: rework usrio refclk selection code
net: macb: np4 doesn't need a usrio pointer
net: macb: add mpfs specific usrio configuration
net: macb: warn on pclk use as a tsu_clk fallback
net: macb: clean up tsu clk rate acquisition
dt-bindings: net: macb: add property indicating timer adjust mode
net: macb: timer adjust mode is not supported

Théo Lebrun (3):
net: macb: runtime detect MACB_CAPS_USRIO_DISABLED
net: macb: set MACB_CAPS_USRIO_DISABLED if no usrio config is provided
net: macb: drop usrio pointer on EyeQ5 config

.../devicetree/bindings/net/cdns,macb.yaml | 71 ++++++-
drivers/net/ethernet/cadence/macb.h | 8 +
drivers/net/ethernet/cadence/macb_main.c | 187 +++++++++++++-----
3 files changed, 212 insertions(+), 54 deletions(-)

--
2.53.0