@@ -57,6 +57,12 @@ config MDIO_MUX_SANDBOX
This driver is used for testing in test/dm/mdio.c
+config DM_ETH_PHY
+ bool "Enable Driver Model for Ethernet Generic PHY drivers"
+ depends on DM
+ help
+ Enable driver model for Ethernet Generic PHY .
+
menuconfig NETDEVICES
bool "Network device support"
depends on NET
@@ -20,6 +20,7 @@ obj-$(CONFIG_ETH_DESIGNWARE) += designware.o
obj-$(CONFIG_ETH_DESIGNWARE_SOCFPGA) += dwmac_socfpga.o
obj-$(CONFIG_DRIVER_DM9000) += dm9000x.o
obj-$(CONFIG_DNET) += dnet.o
+obj-$(CONFIG_DM_ETH_PHY) += eth-phy-uclass.o
obj-$(CONFIG_E1000) += e1000.o
obj-$(CONFIG_E1000_SPI) += e1000_spi.o
obj-$(CONFIG_EEPRO100) += eepro100.o
new file mode 100644
@@ -0,0 +1,122 @@
+// SPDX-License-Identifier: GPL-2.0+
+/*
+ * Copyright 2020 NXP
+ */
+
+#include <common.h>
+#include <dm.h>
+#include <net.h>
+#include <dm/device-internal.h>
+#include <dm/uclass-internal.h>
+#include <dm/lists.h>
+
+struct eth_phy_device_priv {
+ struct mii_dev *mdio_bus;
+};
+
+int eth_phy_binds_nodes(struct udevice *eth_dev)
+{
+ ofnode mdio_node, phy_node;
+ const char *node_name;
+ int ret;
+
+ mdio_node = dev_read_subnode(eth_dev, "mdio");
+ if (!ofnode_valid(mdio_node)) {
+ debug("%s: %s mdio subnode not found!", __func__,
+ eth_dev->name);
+ return -ENXIO;
+ }
+
+ ofnode_for_each_subnode(phy_node, mdio_node) {
+ node_name = ofnode_get_name(phy_node);
+
+ debug("* Found child node: '%s'\n", node_name);
+
+ ret = device_bind_driver_to_node(eth_dev,
+ "eth_phy_generic_drv",
+ node_name, phy_node, NULL);
+ if (ret) {
+ debug(" - Eth phy binding error: %d\n", ret);
+ continue;
+ }
+
+ debug(" - bound phy device: '%s'\n", node_name);
+ }
+
+ return 0;
+}
+
+int eth_phy_set_mdio_bus(struct udevice *eth_dev, struct mii_dev *mdio_bus)
+{
+ struct udevice *dev;
+ struct eth_phy_device_priv *uc_priv;
+
+ for (uclass_first_device(UCLASS_ETH_PHY, &dev); dev;
+ uclass_next_device(&dev)) {
+ if (dev->parent == eth_dev) {
+ uc_priv = (struct eth_phy_device_priv *)(dev->uclass_priv);
+
+ if (!uc_priv->mdio_bus)
+ uc_priv->mdio_bus = mdio_bus;
+ }
+ }
+
+ return 0;
+}
+
+struct mii_dev *eth_phy_get_mdio_bus(struct udevice *eth_dev)
+{
+ int ret;
+ struct udevice *phy_dev;
+ struct eth_phy_device_priv *uc_priv;
+
+ /* Will probe the parent of phy device, then phy device */
+ ret = uclass_get_device_by_phandle(UCLASS_ETH_PHY, eth_dev,
+ "phy-handle", &phy_dev);
+ if (!ret) {
+ if (eth_dev != phy_dev->parent) {
+ /*
+ * phy_dev is shared and controlled by
+ * other eth controller
+ */
+ uc_priv = (struct eth_phy_device_priv *)(phy_dev->uclass_priv);
+ if (uc_priv->mdio_bus)
+ printf("Get shared mii bus on %s\n", eth_dev->name);
+ else
+ printf("Can't get shared mii bus on %s\n", eth_dev->name);
+
+ return uc_priv->mdio_bus;
+ }
+ } else {
+ printf("FEC: can't find phy-handle\n");
+ }
+
+ return NULL;
+}
+
+int eth_phy_get_addr(struct udevice *dev)
+{
+ struct ofnode_phandle_args phandle_args;
+ int reg;
+
+ if (dev_read_phandle_with_args(dev, "phy-handle", NULL, 0, 0,
+ &phandle_args)) {
+ debug("Failed to find phy-handle");
+ return -ENODEV;
+ }
+
+ reg = ofnode_read_u32_default(phandle_args.node, "reg", 0);
+
+ return reg;
+}
+
+UCLASS_DRIVER(eth_phy_generic) = {
+ .id = UCLASS_ETH_PHY,
+ .name = "eth_phy_generic",
+ .per_device_auto_alloc_size = sizeof(struct eth_phy_device_priv),
+};
+
+U_BOOT_DRIVER(eth_phy_generic_drv) = {
+ .name = "eth_phy_generic_drv",
+ .id = UCLASS_ETH_PHY,
+};
@@ -47,6 +47,7 @@ enum uclass_id {
UCLASS_DMA, /* Direct Memory Access */
UCLASS_EFI, /* EFI managed devices */
UCLASS_ETH, /* Ethernet device */
+ UCLASS_ETH_PHY, /* Ethernet PHY device */
UCLASS_FIRMWARE, /* Firmware */
UCLASS_FS_FIRMWARE_LOADER, /* Generic loader */
UCLASS_GPIO, /* Bank of general-purpose I/O pins */
new file mode 100644
@@ -0,0 +1,17 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2020 NXP
+ */
+
+#ifndef _eth_phy_h_
+#define _eth_phy_h_
+
+#include <dm.h>
+#include <phy.h>
+
+int eth_phy_binds_nodes(struct udevice *eth_dev);
+int eth_phy_set_mdio_bus(struct udevice *eth_dev, struct mii_dev *mdio_bus);
+struct mii_dev *eth_phy_get_mdio_bus(struct udevice *eth_dev);
+int eth_phy_get_addr(struct udevice *dev);
+
+#endif
@@ -13,6 +13,7 @@
#include <dm/uclass-internal.h>
#include <net/pcap.h>
#include "eth_internal.h"
+#include <eth_phy.h>
DECLARE_GLOBAL_DATA_PTR;
@@ -461,6 +462,10 @@ static int eth_post_bind(struct udevice *dev)
return -EINVAL;
}
+#ifdef CONFIG_DM_ETH_PHY
+ eth_phy_binds_nodes(dev);
+#endif
+
return 0;
}