From 0a32f1ff2a2e41404deaba5fb32f8a0d640c0974 Mon Sep 17 00:00:00 2001
From: Michael Walle <michael@walle.cc>
Date: Mon, 20 Apr 2020 20:21:11 +0200
Subject: net: phy: broadcom: add helper to write/read RDB registers

RDB (Register Data Base) registers are used on newer Broadcom PHYs. Add
helper to read, write and modify these registers.

Signed-off-by: Michael Walle <michael@walle.cc>
Reviewed-by: Florian Fainelli <f.fainelli@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
---
 include/linux/brcmphy.h | 3 +++
 1 file changed, 3 insertions(+)

(limited to 'include/linux')

diff --git a/include/linux/brcmphy.h b/include/linux/brcmphy.h
index 7e1d857c8468..897b69309964 100644
--- a/include/linux/brcmphy.h
+++ b/include/linux/brcmphy.h
@@ -115,6 +115,9 @@
 #define MII_BCM54XX_SHD_VAL(x)	((x & 0x1f) << 10)
 #define MII_BCM54XX_SHD_DATA(x)	((x & 0x3ff) << 0)
 
+#define MII_BCM54XX_RDB_ADDR	0x1e
+#define MII_BCM54XX_RDB_DATA	0x1f
+
 /*
  * AUXILIARY CONTROL SHADOW ACCESS REGISTERS.  (PHY REG 0x18)
  */
-- 
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