Lex 3I380A/CW (Atom E3845) motherboards are equipped with dual Intel I211
based 1Gbps copper ethernet:
http://www.lex.com.tw/products/pdf/3I380A&3I380CW.pdf
This patch is to fix the issue with broken "LAN2" port. Before the
patch, only one ethernet port is initialized:
igb 0000:01:00.0: added PHC on eth0
igb 0000:01:00.0: Intel(R) Gigabit Ethernet Network Connection
igb 0000:01:00.0: eth0: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e4
igb 0000:01:00.0: eth0: PBA No: FFFFFF-0FF
igb 0000:01:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s)
igb: probe of 0000:02:00.0 failed with error -2
With this patch, both ethernet ports are available:
igb 0000:01:00.0: added PHC on eth0
igb 0000:01:00.0: Intel(R) Gigabit Ethernet Network Connection
igb 0000:01:00.0: eth0: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e4
igb 0000:01:00.0: eth0: PBA No: FFFFFF-0FF
igb 0000:01:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s)
igb 0000:02:00.0: added PHC on eth1
igb 0000:02:00.0: Intel(R) Gigabit Ethernet Network Connection
igb 0000:02:00.0: eth1: (PCIe:2.5Gb/s:Width x1) 4c:02:89:10:02:e5
igb 0000:02:00.0: eth1: PBA No: FFFFFF-0FF
igb 0000:02:00.0: Using MSI-X interrupts. 2 rx queue(s), 2 tx queue(s)
The issue was observed at 3I380A board with BIOS version "A4 01/15/2016"
and 3I380CW board with BIOS version "A3 09/29/2014".
Reference: https://lore.kernel.org/netdev/08c744e6-385b-8fcf-ecdf-1292b5869f94@xxxxxxxxxx/
Fixes: 648e921888ad ("clk: x86: Stop marking clocks as CLK_IS_CRITICAL")
Cc: <stable@xxxxxxxxxxxxxxx> # v4.19+
Signed-off-by: Matwey V. Kornilov <matwey@xxxxxxxxxx>
---
drivers/platform/x86/pmc_atom.c | 18 ++++++++++++++++++
1 file changed, 18 insertions(+)
diff --git a/drivers/platform/x86/pmc_atom.c b/drivers/platform/x86/pmc_atom.c
index b8b1ed1406de..5dc82667907b 100644
--- a/drivers/platform/x86/pmc_atom.c
+++ b/drivers/platform/x86/pmc_atom.c
@@ -388,6 +388,24 @@ static const struct dmi_system_id critclk_systems[] = {
DMI_MATCH(DMI_PRODUCT_NAME, "CEC10 Family"),
},
},
+ {
+ /* pmc_plt_clk* - are used for ethernet controllers */
+ .ident = "Lex 3I380A",
+ .callback = dmi_callback,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Lex BayTrail"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "3I380A"),
+ },
+ },
+ {
+ /* pmc_plt_clk* - are used for ethernet controllers */
+ .ident = "Lex 3I380CW",
+ .callback = dmi_callback,
+ .matches = {
+ DMI_MATCH(DMI_SYS_VENDOR, "Lex BayTrail"),
+ DMI_MATCH(DMI_PRODUCT_NAME, "3I380CW"),
+ },
+ },
{
/* pmc_plt_clk0 - 3 are used for the 4 ethernet controllers */
.ident = "Lex 3I380D",
--
2.35.3
