dt-bindings: net: dsa: Document B53 SRAB interrupts and registers

Document the Broadcom roboswitch Switch Register Access Block interrupt
lines and additional register base addresses for port mux configuration
and SGMII status/configuration registers.
Signed-off-by: Florian Fainelli <f.fainelli@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>

Documentation/devicetree/bindings/net/dsa/b53.txt

@@ -46,6 +46,42 @@ Required properties:
       "brcm,bcm6328-switch"
       "brcm,bcm6368-switch" and the mandatory "brcm,bcm63xx-switch"
 
+Required properties for BCM585xx/586xx/88312 SoCs:
+
+ - reg: a total of 3 register base addresses, the first one must be the
+   Switch Register Access block base, the second is the port 5/4 mux
+   configuration register and the third one is the SGMII configuration
+   and status register base address.
+
+ - interrupts: a total of 13 interrupts must be specified, in the following
+   order: port 0-5, 7-8 link status change, then the integrated PHY interrupt,
+   then the timestamping interrupt and the sleep timer interrupts for ports
+   5,7,8.
+
+Optional properties for BCM585xx/586xx/88312 SoCs:
+
+  - reg-names: a total of 3 names matching the 3 base register address, must
+    be in the following order:
+	"srab"
+	"mux_config"
+	"sgmii_config"
+
+  - interrupt-names: a total of 13 names matching the 13 interrupts specified
+    must be in the following order:
+	"link_state_p0"
+	"link_state_p1"
+	"link_state_p2"
+	"link_state_p3"
+	"link_state_p4"
+	"link_state_p5"
+	"link_state_p7"
+	"link_state_p8"
+	"phy"
+	"ts"
+	"imp_sleep_timer_p5"
+	"imp_sleep_timer_p7"
+	"imp_sleep_timer_p8"
+
 See Documentation/devicetree/bindings/net/dsa/dsa.txt for a list of additional
 required and optional properties.