Specifying IDM register space in DT is not mendatory for SoCs
where firmware takes care of IDM operations. This patch updates
BGMAC driver's DT binding documentation indicating the same.

Signed-off-by: Abhishek Shah <abhishek.s...@broadcom.com>
Reviewed-by: Ray Jui <ray....@broadcom.com>
Reviewed-by: Oza Oza <oza....@broadcom.com>
Reviewed-by: Scott Branden <scott.bran...@broadcom.com>
---
 Documentation/devicetree/bindings/net/brcm,amac.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/net/brcm,amac.txt 
b/Documentation/devicetree/bindings/net/brcm,amac.txt
index 2fefa1a..ad16c1f 100644
--- a/Documentation/devicetree/bindings/net/brcm,amac.txt
+++ b/Documentation/devicetree/bindings/net/brcm,amac.txt
@@ -11,6 +11,7 @@ Required properties:
  - reg-names:  Names of the registers.
                "amac_base":    Address and length of the GMAC registers
                "idm_base":     Address and length of the GMAC IDM registers
+                               (required for NSP and Northstar2)
                "nicpm_base":   Address and length of the NIC Port Manager
                                registers (required for Northstar2)
  - interrupts: Interrupt number
-- 
2.7.4

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