From: mugunthanvnm@ti.com (Mugunthan V N)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH v3 1/4] net: phy: dp83867: Add documentation for optional impedance control
Date: Thu, 6 Oct 2016 10:43:52 +0530 [thread overview]
Message-ID: <20161006051355.15947-2-mugunthanvnm@ti.com> (raw)
In-Reply-To: <20161006051355.15947-1-mugunthanvnm@ti.com>
Add documention of ti,impedance-control which can be used to
correct MAC impedance mismatch using phy extended registers.
Signed-off-by: Mugunthan V N <mugunthanvnm@ti.com>
---
Documentation/devicetree/bindings/net/ti,dp83867.txt | 12 ++++++++++++
1 file changed, 12 insertions(+)
diff --git a/Documentation/devicetree/bindings/net/ti,dp83867.txt b/Documentation/devicetree/bindings/net/ti,dp83867.txt
index 5d21141..85bf945 100644
--- a/Documentation/devicetree/bindings/net/ti,dp83867.txt
+++ b/Documentation/devicetree/bindings/net/ti,dp83867.txt
@@ -9,6 +9,18 @@ Required properties:
- ti,fifo-depth - Transmitt FIFO depth- see dt-bindings/net/ti-dp83867.h
for applicable values
+Optional property:
+ - ti,min-output-impedance - MAC Interface Impedance control to set
+ the programmable output impedance to
+ minimum value (35 ohms).
+ - ti,max-output-impedance - MAC Interface Impedance control to set
+ the programmable output impedance to
+ maximum value (70 ohms).
+
+Note: ti,min-output-impedance and ti,max-output-impedance are mutually
+ exclusive. When both properties are present ti,max-output-impedance
+ takes precedence.
+
Default child nodes are standard Ethernet PHY device
nodes as described in Documentation/devicetree/bindings/net/phy.txt
--
2.10.0.372.g6fe1b14
next prev parent reply other threads:[~2016-10-06 5:13 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-10-06 5:13 [PATCH v3 0/4] add support for impedance control for TI dp83867 phy and fix 2nd ethernet on dra72 rev C evm Mugunthan V N
2016-10-06 5:13 ` Mugunthan V N [this message]
2016-10-10 13:18 ` [PATCH v3 1/4] net: phy: dp83867: Add documentation for optional impedance control Rob Herring
2016-10-12 8:13 ` Mugunthan V N
2016-10-06 5:13 ` [PATCH v3 2/4] net: phy: dp83867: add support for MAC impedance configuration Mugunthan V N
2016-10-06 5:13 ` [PATCH v3 3/4] ARM: dts: dra72-evm-revc: add phy impedance settings Mugunthan V N
2016-10-06 5:13 ` [PATCH v3 4/4] ARM: dts: dra72-evm-revc: fix correct phy delay Mugunthan V N
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