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From: Fabio Estevam <festevam@gmail.com>
To: shawnguo@kernel.org
Cc: smoch@web.de, Fabio Estevam <festevam@gmail.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH 1/2] ARM: dts: imx6q-tbs2910: Pass phy-reset-duration
Date: Thu, 25 Jun 2020 08:08:14 -0300	[thread overview]
Message-ID: <20200625110815.8098-1-festevam@gmail.com> (raw)

According to the AR8035 datasheet:

"When using crystal, the clock is generated internally after power is
stable. For a reliable power on reset, suggest to keep asserting the reset
low long enough (10ms) to ensure the clock is stable and clock-to-reset 1ms
requirement is satisfied."

Pass the 'phy-reset-duration' property to meet such requirement.

Signed-off-by: Fabio Estevam <festevam@gmail.com>
---
 arch/arm/boot/dts/imx6q-tbs2910.dts | 1 +
 1 file changed, 1 insertion(+)

diff --git a/arch/arm/boot/dts/imx6q-tbs2910.dts b/arch/arm/boot/dts/imx6q-tbs2910.dts
index bfff87ce2e1f..7b03b2787430 100644
--- a/arch/arm/boot/dts/imx6q-tbs2910.dts
+++ b/arch/arm/boot/dts/imx6q-tbs2910.dts
@@ -100,6 +100,7 @@
 	pinctrl-0 = <&pinctrl_enet>;
 	phy-mode = "rgmii-id";
 	phy-reset-gpios = <&gpio1 25 GPIO_ACTIVE_LOW>;
+	phy-reset-duration = <10>;
 	status = "okay";
 };
 
-- 
2.17.1


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             reply	other threads:[~2020-06-25 11:10 UTC|newest]

Thread overview: 2+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-06-25 11:08 Fabio Estevam [this message]
2020-06-25 11:08 ` [PATCH 2/2] ARM: dts: imx6qdl-sabresd: Add an mdio node Fabio Estevam

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