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a853c68e29
The sja1105 hardware has a quirk in that some changes require a switch reset, which loses all configuration. When the reset is initiated, everything needs to be reprogrammed, including the MACs and the PCS. This is currently done in sja1105_static_config_reload() - we manually call sja1105_adjust_port_config(), sja1105_sgmii_pcs_config() and sja1105_sgmii_pcs_force_speed() which are all internal functions. There is a desire for sja1105 to use the common xpcs driver, and that means that the equivalents of those functions, xpcs_do_config() and xpcs_link_up() respectively, will no longer be local functions. Forcing phylink to retrigger a resolve somehow, say by doing dev_close() followed by dev_open() is not really an option, because the CPU port might have a PCS as well, and there is no net device which we can close and reopen for that. Additionally, the dev_close/dev_open sequence might force a renegotiation of the copper-side link for SGMII ports connected to a PHY, and this is undesirable as well, because the switch reset is much quicker than a PHY autoneg, so we would have a lot more downtime. The only solution I see is for the sja1105 driver to keep doing what it's doing, and that means we need to export the equivalents from xpcs for sja1105_sgmii_pcs_config and sja1105_sgmii_pcs_force_speed, and call them directly in sja1105_static_config_reload(). This will be done during the conversion patch. Signed-off-by: Vladimir Oltean <vladimir.oltean@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net> |
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| kunit | ||
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| linux | ||
| math-emu | ||
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| misc | ||
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