net: renesas: rswitch: align mdio C45 operations with datasheet

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Per rswitch datasheet, software can know that mdio operation completed
either by polling MPSM.PSME bit, or via interrupt.

Instead, the driver currently polls for interrupt status bit. Although
this still provides correct result, it requires additional register
operations to clean the interrupt status bits, and generally looks wrong.

Fix it to poll MPSM.PSME bit, as the datasheet suggests.

Signed-off-by: Nikita Yushchenko <nikita.yoush@cogentembedded.com>
Reviewed-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Tested-by: Yoshihiro Shimoda <yoshihiro.shimoda.uh@renesas.com>
Link: https://patch.msgid.link/20241216071957.2587354-4-nikita.yoush@cogentembedded.com
Signed-off-by: Jakub Kicinski <kuba@kernel.org>

...

This commit is contained in:

Nikita Yushchenko 2024-12-16 12:19:55 +05:00 • committed by Jakub Kicinski

parent da75ba93e3

commit 1ced1b8cac

2 changed files with 3 additions and 15 deletions

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12

drivers/net/ethernet/renesas/rswitch.c

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6

drivers/net/ethernet/renesas/rswitch.h

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