1 files changed, 68 insertions, 0 deletions
diff --git a/include/linux/platform_data/dsa.h b/include/linux/platform_data/dsa.h
new file mode 100644
index 000000000000..d4d9bf2060a6
--- /dev/null
+++ b/include/linux/platform_data/dsa.h
@@ -0,0 +1,68 @@
+/* SPDX-License-Identifier: GPL-2.0 */
+#ifndef __DSA_PDATA_H
+#define __DSA_PDATA_H
+
+struct device;
+struct net_device;
+
+#define DSA_MAX_SWITCHES	4
+#define DSA_MAX_PORTS		12
+#define DSA_RTABLE_NONE		-1
+
+struct dsa_chip_data {
+	/*
+	 * How to access the switch configuration registers.
+	 */
+	struct device	*host_dev;
+	int		sw_addr;
+
+	/*
+	 * Reference to network devices
+	 */
+	struct device	*netdev[DSA_MAX_PORTS];
+
+	/* set to size of eeprom if supported by the switch */
+	int		eeprom_len;
+
+	/* Device tree node pointer for this specific switch chip
+	 * used during switch setup in case additional properties
+	 * and resources needs to be used
+	 */
+	struct device_node *of_node;
+
+	/*
+	 * The names of the switch's ports.  Use "cpu" to
+	 * designate the switch port that the cpu is connected to,
+	 * "dsa" to indicate that this port is a DSA link to
+	 * another switch, NULL to indicate the port is unused,
+	 * or any other string to indicate this is a physical port.
+	 */
+	char		*port_names[DSA_MAX_PORTS];
+	struct device_node *port_dn[DSA_MAX_PORTS];
+
+	/*
+	 * An array of which element [a] indicates which port on this
+	 * switch should be used to send packets to that are destined
+	 * for switch a. Can be NULL if there is only one switch chip.
+	 */
+	s8		rtable[DSA_MAX_SWITCHES];
+};
+
+struct dsa_platform_data {
+	/*
+	 * Reference to a Linux network interface that connects
+	 * to the root switch chip of the tree.
+	 */
+	struct device	*netdev;
+	struct net_device *of_netdev;
+
+	/*
+	 * Info structs describing each of the switch chips
+	 * connected via this network interface.
+	 */
+	int		nr_chips;
+	struct dsa_chip_data	*chip;
+};
+
+
+#endif /* __DSA_PDATA_H */