net: SYS_RX_ETH_BUFFER defaults to 8 when CONFIG_FSL_ENETC=y

drivers/net/fsl_enetc.h specifies ENETC_BD_CNT "buffer descriptors count
must be a multiple of 8". This constant is set to
CONFIG_SYS_RX_ETH_BUFFER which defaults to 4.

All defconfigs enabling CONFIG_FSL_ENETC fortunately have it set to 8,
according to
./tools/qconfig.py -l -f CONFIG_FSL_ENETC '~CONFIG_SYS_RX_ETH_BUFFER=8'.

Let's make sure the default is sane by having it set to 8 when this
driver is enabled. Note that originally[1] it was said EEPRO100 and 405
EMAC should be 8 or higher. 405 (PPC405?) support seems to have been
dropped in commit b5e7c84f72ee ("ppc4xx: remove ASH405 board"), 11 years
ago. Maybe there's something we can do for EEPRO100 though?

Start all lines with a tab instead of spaces.

Specify limitation for FSL_ENETC in the help text.

[1] commit 53cf9435ccf9 ("- CFG_RX_ETH_BUFFER added.")
Reviewed-by: Simon Glass <[email protected]>
Signed-off-by: Quentin Schulz <[email protected]>

0 files changed, 0 insertions, 0 deletions