Currently, phy_interface for TSN controller instance is set based on its
PCI Device ID. For SGMII PHY interface, phy_interface default to
PHY_INTERFACE_MODE_SGMII. As C37 AN supports both SGMII and 1000BASE-X
mode, we add support for 'phy-mode' ACPI _DSD for port-specific
and customer platform specific customization.
Thanks to Andrew Lunn's guidance in
https://patchwork.kernel.org/comment/24827101/
Tested-by: Emilio Riva <[email protected]>
Signed-off-by: Ong Boon Leong <[email protected]>
---
drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c | 15 +++++++++++++++
1 file changed, 15 insertions(+)
diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
index 675dfb89b76..e5f3d7deec3 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-intel.c
@@ -442,6 +442,7 @@ static void common_default_data(struct plat_stmmacenet_data *plat)
static int intel_mgbe_common_data(struct pci_dev *pdev,
struct plat_stmmacenet_data *plat)
{
+ struct fwnode_handle *fwnode;
char clk_name[20];
int ret;
int i;
@@ -560,6 +561,20 @@ static int intel_mgbe_common_data(struct pci_dev *pdev,
/* Use the last Rx queue */
plat->vlan_fail_q = plat->rx_queues_to_use - 1;
+ /* For fixed-link setup, we allow phy-mode setting */
+ fwnode = dev_fwnode(&pdev->dev);
+ if (fwnode) {
+ const char *phy_mode;
+
+ if (!fwnode_property_read_string(fwnode, "phy-mode",
+ &phy_mode)) {
+ if (!strcmp(phy_mode, "sgmii"))
+ plat->phy_interface = PHY_INTERFACE_MODE_SGMII;
+ if (!strcmp(phy_mode, "1000base-x"))
+ plat->phy_interface = PHY_INTERFACE_MODE_1000BASEX;
+ }
+ }
+
/* Intel mgbe SGMII interface uses pcs-xcps */
if (plat->phy_interface == PHY_INTERFACE_MODE_SGMII ||
plat->phy_interface == PHY_INTERFACE_MODE_1000BASEX) {
--
2.25.1