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meba: lan966x: forward PHY SPI register access to board_info accessors#21

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meba: lan966x: forward PHY SPI register access to board_info accessors#21
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@vjardin vjardin commented Jul 9, 2026

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It is a rework of #20 thanks to @HoratiuVultur 's comments.

There is a dependency on #17 that has been imported here since we cannot handle pull request over pull request with github.

vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
meba: lan966x: forward PHY SPI register access to board_info accessors
739211c 
api.meba_phy_spi_read/write: forward to the application-provided
board_info spi_read/spi_write accessors.

Boards without spi accessors get a MESA_RC_NOT_IMPLEMENTED, as before.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
build: Add eds2 25G PHY-slot demo app on the lan966x MEBA
fd8e9fe 
Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)
@vjardin
vjardin force-pushed the vj_eds2_board_v2 branch from b0a44b8 to fd8e9fe Compare July 9, 2026 15:38
@vjardin

vjardin commented Jul 9, 2026

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following a live review with @BlockoS ; this dirty patch of the eds2 board could be avoided by creating a mesa_void board that supports the phy only case (mepa) without any switch.

Please, @HoratiuVultur : would it make a better sense ? Can we propose such mesa_void ?

I'll finalize some few topics and try to propose this alternate by early next week (or sooner if possible).

vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
mesa-demo: runtime PHY-only mode with optional SPI-proxy client
8bb37eb 
Support the MEPA PHYs (LAN80xx) without a switch instance.

It can be used with 2 modes: either thru direct access to a
/dev/spidev or thru a proxy that centralize the access to
the /dev/spidev in order to support many users of the
same MEPA PHY.

Fake few models for the purposes of this phy-only case: the board
conf answers select the EDS2 board (pcb 0x8385) with the LAN8814
plugin module in slot A, so the board comes up with 4 ports (base
port 0) matching the '-P' PHY slot router.

It was tested with a LAN8024 target.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung/sw-mepa#11 (sw-mepa original)
  microchip-ung#17
status: sw-mepa PR microchip-ung#11 closed 2026-07-03 by Microchip (HoratiuVultur):
  "a PR in MESA was open for this, I will add my comments there" --
  review continues on mesa PR microchip-ung#17.

integration (vj_integration_allPR):
  cherry-picked from: vj_shared_phy_only @ 42ad66e
  pull request: microchip-ung#17 (open; also the
    first commit of PR microchip-ung#21's stack)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
meba: lan966x: forward PHY SPI register access to board_info accessors
64a42a5 
api.meba_phy_spi_read/write: forward to the application-provided
board_info spi_read/spi_write accessors.

Boards without spi accessors get a MESA_RC_NOT_IMPLEMENTED, as before.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)

integration (vj_integration_allPR):
  cherry-picked from: vj_eds2_board_v2 @ 739211c
  pull request: microchip-ung#21 (open)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
build: Add eds2 25G PHY-slot demo app on the lan966x MEBA
3eef068 
Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)

integration (vj_integration_allPR):
  cherry-picked from: vj_eds2_board_v2 @ fd8e9fe
  pull request: microchip-ung#21 (open)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
mesa-demo: runtime PHY-only mode with optional SPI-proxy client
7dca9ea 
Support the MEPA PHYs (LAN80xx) without a switch instance.

It can be used with 2 modes: either thru direct access to a
/dev/spidev or thru a proxy that centralize the access to
the /dev/spidev in order to support many users of the
same MEPA PHY.

Fake few models for the purposes of this phy-only case: the board
conf answers select the EDS2 board (pcb 0x8385) with the LAN8814
plugin module in slot A, so the board comes up with 4 ports (base
port 0) matching the '-P' PHY slot router.

It was tested with a LAN8024 target.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung/sw-mepa#11 (sw-mepa original)
  microchip-ung#17
status: sw-mepa PR microchip-ung#11 closed 2026-07-03 by Microchip (HoratiuVultur):
  "a PR in MESA was open for this, I will add my comments there" --
  review continues on mesa PR microchip-ung#17.

integration (vj_integration_allPR):
  cherry-picked from: vj_shared_phy_only @ 42ad66e
  pull request: microchip-ung#17 (open; also the
    first commit of PR microchip-ung#21's stack)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
meba: lan966x: forward PHY SPI register access to board_info accessors
c5e8a2b 
api.meba_phy_spi_read/write: forward to the application-provided
board_info spi_read/spi_write accessors.

Boards without spi accessors get a MESA_RC_NOT_IMPLEMENTED, as before.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)

integration (vj_integration_allPR):
  cherry-picked from: vj_eds2_board_v2 @ 739211c
  pull request: microchip-ung#21 (open)
vjardin added a commit to vjardin/mesa that referenced this pull request Jul 9, 2026
@vjardin
build: Add eds2 25G PHY-slot demo app on the lan966x MEBA
78e4d67 
Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
depends on:
  microchip-ung#17 (runtime PHY-only mode; first
  commit of PR microchip-ung#21's stack)
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)

integration (vj_integration_allPR):
  cherry-picked from: vj_eds2_board_v2 @ fd8e9fe
  pull request: microchip-ung#21 (open)
@vjardin

vjardin commented Jul 9, 2026 •
edited
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implementation notes:

  • meba: board
  • mesa: switch
  • mepa: phy

meba_void -> board with a phy only that sets for instance 4 ports

@vjardin
meba: lan966x: forward PHY SPI register access to board_info accessors
21b1572 
api.meba_phy_spi_read/write: forward to the application-provided
board_info spi_read/spi_write accessors.

Boards without spi accessors get a MESA_RC_NOT_IMPLEMENTED, as before.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)
note: standalone since the 2026-07-10 rework -- this PR no longer stacks on
  PR microchip-ung#17 and no longer carries the eds2 25G demo app (superseded by PR microchip-ung#17's
  void-board PHY-only app). meba_phy_spi_read/write and the board_info
  spi_read/spi_write accessors are stock v2026.06; this commit only wires
  them together on the lan966x MEBA for real EDS2 setups.
@vjardin
vjardin force-pushed the vj_eds2_board_v2 branch from fd8e9fe to 21b1572 Compare July 9, 2026 22:35
@vjardin vjardin changed the title finalize standalone/phy only support and spi proxy with applied case for eds2 board meba: lan966x: forward PHY SPI register access to board_info accessors Jul 9, 2026
@vjardin

vjardin commented Jul 9, 2026

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It is standalone now since the last push and since thesuperseded by the PHY-only application on the
void board, see #17.

This forwarding remains useful on its own for real EDS2 setups running the stock lan966x MEBA with SPI-attached PHYs.

vjardin added a commit to vjardin/mesa that referenced this pull request Jul 10, 2026
@vjardin
meba: lan966x: forward PHY SPI register access to board_info accessors
7468359 
api.meba_phy_spi_read/write: forward to the application-provided
board_info spi_read/spi_write accessors.

Boards without spi accessors get a MESA_RC_NOT_IMPLEMENTED, as before.

Signed-off-by: Vincent Jardin <vjardin@free.fr>

---
misc information:
pushed to:
  microchip-ung#21
supersedes:
  microchip-ung#20 (closed 2026-07-08: rework onto
  meba/src/lan966x requested by Microchip)
note: standalone since the 2026-07-10 rework -- this PR no longer stacks on
  PR microchip-ung#17 and no longer carries the eds2 25G demo app (superseded by PR microchip-ung#17's
  void-board PHY-only app). meba_phy_spi_read/write and the board_info
  spi_read/spi_write accessors are stock v2026.06; this commit only wires
  them together on the lan966x MEBA for real EDS2 setups.

integration (vj_integration_allPR):
  cherry-picked from: vj_eds2_board_v2 @ 21b1572
  pull request: microchip-ung#21 (open)
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