From 577ac8ce8464855cf26644197f57e32cb39c4ff9 Mon Sep 17 00:00:00 2001 From: Roman Kuzmitskii Date: Sun, 1 Nov 2020 20:46:05 +0000 Subject: octeon: honor disabled sgmii device tree nodes adds patch to octeon ethernet driver that lets sgmii interface device tree node to be disabled and that disabled interface won't be unnecessarily initialized. It solves the problem with octeon boards that have 8 sgmii or more ports initialized but have nothing connected to them. Tested-by: Johannes Kimmel Signed-off-by: Roman Kuzmitskii --- .../701-honor_sgmii_node_device_tree_status.patch | 27 ++++++++++++++++++++++ 1 file changed, 27 insertions(+) create mode 100644 target/linux/octeon/patches-5.4/701-honor_sgmii_node_device_tree_status.patch (limited to 'target/linux/octeon') diff --git a/target/linux/octeon/patches-5.4/701-honor_sgmii_node_device_tree_status.patch b/target/linux/octeon/patches-5.4/701-honor_sgmii_node_device_tree_status.patch new file mode 100644 index 0000000000..af223dc314 --- /dev/null +++ b/target/linux/octeon/patches-5.4/701-honor_sgmii_node_device_tree_status.patch @@ -0,0 +1,27 @@ +From: Roman Kuzmitskii +Date: Sun, 01 Nov 2020 19:00:00 +0000 +Subject: [PATCH] staging: octeon: sgmii to honor disabled dt node status + +With this patch, sgmii interface device tree node could be disabled and +that disabled interface will not be unnecessarily initialized. + +It solves the problem with Octeon boards that have 8 sgmii or more ports +initialized but have nothing connected to them. + +Tested-by: Johannes Kimmel +Signed-off-by: Roman Kuzmitskii +--- a/drivers/staging/octeon/ethernet.c ++++ b/drivers/staging/octeon/ethernet.c +@@ -884,8 +884,10 @@ + + case CVMX_HELPER_INTERFACE_MODE_SGMII: + priv->phy_mode = PHY_INTERFACE_MODE_SGMII; +- dev->netdev_ops = &cvm_oct_sgmii_netdev_ops; +- strscpy(dev->name, "eth%d", sizeof(dev->name)); ++ if (of_device_is_available(priv->of_node)) { ++ dev->netdev_ops = &cvm_oct_sgmii_netdev_ops; ++ strscpy(dev->name, "eth%d", sizeof(dev->name)); ++ } + break; + + case CVMX_HELPER_INTERFACE_MODE_SPI: -- cgit v1.2.3