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linux-stable-mirror/drivers/net/ethernet/amd
Shyam Sundar S KandGreg Kroah-Hartman e8dabc670c net: amd-xgbe: Toggle PLL settings during rate change
[ Upstream commit daf182d360 ]

For each rate change command submission, the FW has to do a phy
power off sequence internally. For this to happen correctly, the
PLL re-initialization control setting has to be turned off before
sending mailbox commands and re-enabled once the command submission
is complete.

Without the PLL control setting, the link up takes longer time in a
fixed phy configuration.

Fixes: 47f164deab ("amd-xgbe: Add PCI device support")
Co-developed-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Sudheesh Mavila <sudheesh.mavila@amd.com>
Signed-off-by: Shyam Sundar S K <Shyam-sundar.S-k@amd.com>
Acked-by: Tom Lendacky <thomas.lendacky@amd.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Signed-off-by: Sasha Levin <sashal@kernel.org>
2021-11-18 19:16:43 +01:00
..
2021-07-27 20:11:45 +01:00
2021-08-03 13:05:25 +01:00
2021-08-03 13:05:25 +01:00
2021-07-27 20:11:45 +01:00
2021-08-03 13:05:25 +01:00