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From: Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>
To: Tony Lindgren <tony-4v6yS6AI5VpBDgjK7y7TUQ@public.gmane.org>
Cc: Linux OMAP Mailing List
	<linux-omap-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Linux ARM Mailing List
	<linux-arm-kernel-IAPFreCvJWM7uuMidbF8XUB+6BGkLq7r@public.gmane.org>,
	Device Tree Mailing List
	<devicetree-u79uwXL29TY76Z2rM5mHXA@public.gmane.org>,
	Grygorii Strashko
	<grygorii.strashko-l0cyMroinI0@public.gmane.org>,
	Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>
Subject: [PATCH 1/3] ARM: dts: dra71-evm: workaround incorrect DP83867 RX_CTRL pin strap
Date: Tue, 27 Jun 2017 20:36:10 +0530	[thread overview]
Message-ID: <d283da02e13907f87d9b05a605f4114a95524255.1498573382.git.nsekhar@ti.com> (raw)
In-Reply-To: <cover.1498573382.git.nsekhar-l0cyMroinI0@public.gmane.org>

The DRA71 EVM straps the DP83867 GigaBit Ethernet phy's RX_DV/RX_CTRL pin
in mode 1. Unfortunately, the phy data manual disallows this.

Add "ti,dp83867-rxctrl-strap-quirk" property to the phy's device-tree node
to allow kernel to enable software workaround for this incorrect strap
setting. This is as suggested by the phy's datamanual and ensures proper
operation of this PHY.

This needs to be done for both instances of this PHY present on the board.

Signed-off-by: Sekhar Nori <nsekhar-l0cyMroinI0@public.gmane.org>
---
 arch/arm/boot/dts/dra71-evm.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/dra71-evm.dts b/arch/arm/boot/dts/dra71-evm.dts
index 570f06e4f71f..c1a7ee09218f 100644
--- a/arch/arm/boot/dts/dra71-evm.dts
+++ b/arch/arm/boot/dts/dra71-evm.dts
@@ -205,6 +205,7 @@
 		ti,tx-internal-delay = <DP83867_RGMIIDCTL_250_PS>;
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
 		ti,min-output-impedance;
+		ti,dp83867-rxctrl-strap-quirk;
 	};
 
 	dp83867_1: ethernet-phy@3 {
@@ -213,6 +214,7 @@
 		ti,tx-internal-delay = <DP83867_RGMIIDCTL_250_PS>;
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
 		ti,min-output-impedance;
+		ti,dp83867-rxctrl-strap-quirk;
 	};
 };
 
-- 
2.9.0

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WARNING: multiple messages have this Message-ID (diff)
From: nsekhar@ti.com (Sekhar Nori)
To: linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/3] ARM: dts: dra71-evm: workaround incorrect DP83867 RX_CTRL pin strap
Date: Tue, 27 Jun 2017 20:36:10 +0530	[thread overview]
Message-ID: <d283da02e13907f87d9b05a605f4114a95524255.1498573382.git.nsekhar@ti.com> (raw)
In-Reply-To: <cover.1498573382.git.nsekhar@ti.com>

The DRA71 EVM straps the DP83867 GigaBit Ethernet phy's RX_DV/RX_CTRL pin
in mode 1. Unfortunately, the phy data manual disallows this.

Add "ti,dp83867-rxctrl-strap-quirk" property to the phy's device-tree node
to allow kernel to enable software workaround for this incorrect strap
setting. This is as suggested by the phy's datamanual and ensures proper
operation of this PHY.

This needs to be done for both instances of this PHY present on the board.

Signed-off-by: Sekhar Nori <nsekhar@ti.com>
---
 arch/arm/boot/dts/dra71-evm.dts | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/boot/dts/dra71-evm.dts b/arch/arm/boot/dts/dra71-evm.dts
index 570f06e4f71f..c1a7ee09218f 100644
--- a/arch/arm/boot/dts/dra71-evm.dts
+++ b/arch/arm/boot/dts/dra71-evm.dts
@@ -205,6 +205,7 @@
 		ti,tx-internal-delay = <DP83867_RGMIIDCTL_250_PS>;
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
 		ti,min-output-impedance;
+		ti,dp83867-rxctrl-strap-quirk;
 	};
 
 	dp83867_1: ethernet-phy at 3 {
@@ -213,6 +214,7 @@
 		ti,tx-internal-delay = <DP83867_RGMIIDCTL_250_PS>;
 		ti,fifo-depth = <DP83867_PHYCR_FIFO_DEPTH_8_B_NIB>;
 		ti,min-output-impedance;
+		ti,dp83867-rxctrl-strap-quirk;
 	};
 };
 
-- 
2.9.0

  parent reply	other threads:[~2017-06-27 15:06 UTC|newest]

Thread overview: 12+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2017-06-27 15:06 [PATCH 0/3] ARM: dts: omap: workarounds for Ethernet PHY strap on DRA71 and DRA72 EVMs Sekhar Nori
2017-06-27 15:06 ` Sekhar Nori
     [not found] ` <cover.1498573382.git.nsekhar-l0cyMroinI0@public.gmane.org>
2017-06-27 15:06   ` Sekhar Nori [this message]
2017-06-27 15:06     ` [PATCH 1/3] ARM: dts: dra71-evm: workaround incorrect DP83867 RX_CTRL pin strap Sekhar Nori
2017-06-27 15:06   ` [PATCH 2/3] ARM: dts: dra72-evm-revc: " Sekhar Nori
2017-06-27 15:06     ` Sekhar Nori
2017-06-27 15:06   ` [PATCH 3/3] ARM: omap2plus_defconfig: enable DP83867 phy driver Sekhar Nori
2017-06-27 15:06     ` Sekhar Nori
2017-06-28 16:54     ` Grygorii Strashko
2017-06-28 16:54       ` Grygorii Strashko
2017-06-28  5:09   ` [PATCH 0/3] ARM: dts: omap: workarounds for Ethernet PHY strap on DRA71 and DRA72 EVMs Sekhar Nori
2017-06-28  5:09     ` Sekhar Nori

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