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    Subject[PATCH 5.14 772/849] net: dsa: mv88e6xxx: Dont support >1G speeds on 6191X on ports other than 10
    Date
    From: Marek Behún <kabel@kernel.org>

    [ Upstream commit dc2fc9f03c5c410d8f01c2206b3d529f80b13733 ]

    Model 88E6191X only supports >1G speeds on port 10. Port 0 and 9 are
    only 1G.

    Fixes: de776d0d316f ("net: dsa: mv88e6xxx: add support for mv88e6393x family")
    Signed-off-by: Marek Behún <kabel@kernel.org>
    Cc: Russell King (Oracle) <rmk+kernel@armlinux.org.uk>
    Reviewed-by: Andrew Lunn <andrew@lunn.ch>
    Link: https://lore.kernel.org/r/20211104171747.10509-1-kabel@kernel.org
    Signed-off-by: Jakub Kicinski <kuba@kernel.org>
    Signed-off-by: Sasha Levin <sashal@kernel.org>
    ---
    drivers/net/dsa/mv88e6xxx/chip.c | 5 ++++-
    1 file changed, 4 insertions(+), 1 deletion(-)

    diff --git a/drivers/net/dsa/mv88e6xxx/chip.c b/drivers/net/dsa/mv88e6xxx/chip.c
    index f5b2e5e87da43..55fe83b88737d 100644
    --- a/drivers/net/dsa/mv88e6xxx/chip.c
    +++ b/drivers/net/dsa/mv88e6xxx/chip.c
    @@ -639,7 +639,10 @@ static void mv88e6393x_phylink_validate(struct mv88e6xxx_chip *chip, int port,
    unsigned long *mask,
    struct phylink_link_state *state)
    {
    - if (port == 0 || port == 9 || port == 10) {
    + bool is_6191x =
    + chip->info->prod_num == MV88E6XXX_PORT_SWITCH_ID_PROD_6191X;
    +
    + if (((port == 0 || port == 9) && !is_6191x) || port == 10) {
    phylink_set(mask, 10000baseT_Full);
    phylink_set(mask, 10000baseKR_Full);
    phylink_set(mask, 10000baseCR_Full);
    --
    2.33.0


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