From: Jernej Skrabec <jernej.skrabec@siol.net>
To: mripard@kernel.org, wens@csie.org
Cc: mark.rutland@arm.com, devicetree@vger.kernel.org,
Ondrej Jirman <megous@megous.com>,
linux-kernel@vger.kernel.org, linux-sunxi@googlegroups.com,
robh+dt@kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH] arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay
Date: Sun, 25 Aug 2019 15:03:36 +0200 [thread overview]
Message-ID: <20190825130336.14154-1-jernej.skrabec@siol.net> (raw)
Depending on kernel and bootloader configuration, it's possible that
Realtek ethernet PHY isn't powered on properly. It needs some time
before it can be used.
Fix that by adding 100ms ramp delay to regulator responsible for
powering PHY.
Fixes: 94dcfdc77fc5 ("arm64: allwinner: pine64-plus: Enable dwmac-sun8i")
Suggested-by: Ondrej Jirman <megous@megous.com>
Signed-off-by: Jernej Skrabec <jernej.skrabec@siol.net>
---
arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts | 4 ++++
1 file changed, 4 insertions(+)
diff --git a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
index 24f1aac366d6..9612a34c1762 100644
--- a/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
+++ b/arch/arm64/boot/dts/allwinner/sun50i-a64-pine64-plus.dts
@@ -63,3 +63,7 @@
reg = <1>;
};
};
+
+®_dc1sw {
+ regulator-enable-ramp-delay = <100000>;
+};
--
2.23.0
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next reply other threads:[~2019-08-25 13:04 UTC|newest]
Thread overview: 4+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-08-25 13:03 Jernej Skrabec [this message]
2019-08-27 13:34 ` [PATCH] arm64: dts: allwinner: a64: pine64-plus: Add PHY regulator delay Maxime Ripard
2019-08-27 13:48 ` Ondřej Jirman
2019-09-02 11:38 ` Maxime Ripard
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