net: dsa: provide a switch device device tree node pointer

We might need to fetch additional resources from the device tree node
pointer, such as register ranges or other properties. Keep a device_node
pointer around for this.

Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>

2 files changed, 8 insertions, 0 deletions

diff --git a/include/net/dsa.h b/include/net/dsa.h
index 6e26f1e4d8ce..decc62709acd 100644
--- a/include/net/dsa.h
+++ b/include/net/dsa.h
@@ -15,6 +15,7 @@
 #include <linux/list.h>
 #include <linux/timer.h>
 #include <linux/workqueue.h>
+#include <linux/of.h>
 
 #define DSA_MAX_SWITCHES        4
 #define DSA_MAX_PORTS           12
@@ -26,6 +27,12 @@ struct dsa_chip_data {
         struct device   *mii_bus;
         int             sw_addr;
 
+        /* 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,
diff --git a/net/dsa/dsa.c b/net/dsa/dsa.c
index 92e71d2a2ccd..a28ef432d016 100644
--- a/net/dsa/dsa.c
+++ b/net/dsa/dsa.c
@@ -410,6 +410,7 @@ static int dsa_of_probe(struct platform_device *pdev)
                 chip_index++;
                 cd = &pd->chip[chip_index];
 
+                cd->of_node = child;
                 cd->mii_bus = &mdio_bus->dev;
 
                 sw_addr = of_get_property(child, "reg", NULL);