From: Rasmus Villemoes <linux@rasmusvillemoes.dk>
To: Shawn Guo <shawnguo@kernel.org>, Li Yang <leoyang.li@nxp.com>,
Rob Herring <robh+dt@kernel.org>,
Mark Rutland <mark.rutland@arm.com>
Cc: Vladimir Oltean <olteanv@gmail.com>,
Marc Zyngier <maz@kernel.org>,
netdev@vger.kernel.org, Andrew Lunn <andrew@lunn.ch>,
Rasmus Villemoes <linux@rasmusvillemoes.dk>,
linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org,
linux-kernel@vger.kernel.org
Subject: [PATCH v2 2/2] ARM: dts: ls1021a-tsn: Use interrupts for the SGMII PHYs
Date: Thu, 14 Nov 2019 12:02:53 +0100 [thread overview]
Message-ID: <20191114110254.32171-3-linux@rasmusvillemoes.dk> (raw)
In-Reply-To: <20191114110254.32171-1-linux@rasmusvillemoes.dk>
From: Vladimir Oltean <olteanv@gmail.com>
On the LS1021A-TSN board, the 2 Atheros AR8031 PHYs for eth0 and eth1
have interrupt lines connected to the shared IRQ2_B LS1021A pin.
Switching to interrupts offloads the PHY library from the task of
polling the MDIO status and AN registers (1, 4, 5) every second.
Unfortunately, the BCM5464R quad PHY connected to the switch does not
appear to have an interrupt line routed to the SoC.
Signed-off-by: Vladimir Oltean <olteanv@gmail.com>
Signed-off-by: Rasmus Villemoes <linux@rasmusvillemoes.dk>
---
arch/arm/boot/dts/ls1021a-tsn.dts | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm/boot/dts/ls1021a-tsn.dts b/arch/arm/boot/dts/ls1021a-tsn.dts
index 5b7689094b70..9d8f0c2a8aba 100644
--- a/arch/arm/boot/dts/ls1021a-tsn.dts
+++ b/arch/arm/boot/dts/ls1021a-tsn.dts
@@ -203,11 +203,15 @@
/* AR8031 */
sgmii_phy1: ethernet-phy@1 {
reg = <0x1>;
+ /* SGMII1_PHY_INT_B: connected to IRQ2, active low */
+ interrupts-extended = <&extirq 2 IRQ_TYPE_LEVEL_LOW>;
};
/* AR8031 */
sgmii_phy2: ethernet-phy@2 {
reg = <0x2>;
+ /* SGMII2_PHY_INT_B: connected to IRQ2, active low */
+ interrupts-extended = <&extirq 2 IRQ_TYPE_LEVEL_LOW>;
};
/* BCM5464 quad PHY */
--
2.23.0
next prev parent reply other threads:[~2019-11-14 11:03 UTC|newest]
Thread overview: 7+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-11-14 11:02 [PATCH v2 0/2] ARM: dts: ls1021a: define and use external interrupt lines Rasmus Villemoes
2019-11-14 11:02 ` [PATCH v2 1/2] ARM: dts: ls1021a: add node describing " Rasmus Villemoes
2019-11-14 11:02 ` Rasmus Villemoes [this message]
2019-11-14 15:28 ` [PATCH v2 2/2] ARM: dts: ls1021a-tsn: Use interrupts for the SGMII PHYs Andrew Lunn
2019-11-14 21:39 ` [PATCH v2 0/2] ARM: dts: ls1021a: define and use external interrupt lines David Miller
2019-11-14 21:53 ` Vladimir Oltean
2019-12-04 13:14 ` Shawn Guo
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