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24e564d327
Kernel 5.4 receives a reduced set, just to make the SFP cage work. While we are at it, move the patches accepted upstream to the 0xx series. Reviewed-by: Noci <noci@noci.work> Reviewed-by: Justin van Steijn <jvs@fsfe.org> Reviewed-by: Nico Rikken <nico@nicorikken.eu> Reviewed-by: Julius Schwartzenberg <julius.schwartzenberg@gmail.com> Signed-off-by: Klaus Kudielka <klaus.kudielka@gmail.com> (cherry picked from commit 8138cb8737d1475e6e8d57393500f30384e75a82)
91 lines
2.9 KiB
Diff
91 lines
2.9 KiB
Diff
From add2d65962977caf23ca2fa21a2457d31b636574 Mon Sep 17 00:00:00 2001
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From: =?UTF-8?q?Marek=20Beh=C3=BAn?= <kabel@kernel.org>
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Date: Mon, 16 Nov 2020 13:24:22 +0100
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Subject: ARM: dts: turris-omnia: add SFP node
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MIME-Version: 1.0
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Content-Type: text/plain; charset=UTF-8
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Content-Transfer-Encoding: 8bit
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Turris Omnia has an SFP cage that, together with WAN PHY, is connected
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to eth2 SerDes via a SerDes multiplexor. When a SFP module is present,
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the multiplexor switches the SerDes signal from PHY to SFP.
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Describe the SFP cage, but leave it disabled. Until phylink has support
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for such configuration, we are leaving it to U-Boot to enable SFP and
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disable WAN PHY at boot time depending on whether a SFP module is
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present.
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Signed-off-by: Marek Behún <kabel@kernel.org>
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Fixes: 26ca8b52d6e1 ("ARM: dts: add support for Turris Omnia")
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Cc: Russell King - ARM Linux admin <linux@armlinux.org.uk>
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Cc: linux-arm-kernel@lists.infradead.org
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Cc: Uwe Kleine-König <uwe@kleine-koenig.org>
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Cc: Jason Cooper <jason@lakedaemon.net>
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Cc: Gregory CLEMENT <gregory.clement@bootlin.com>
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Cc: Andreas Färber <afaerber@suse.de>
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Cc: Rob Herring <robh+dt@kernel.org>
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Cc: devicetree@vger.kernel.org
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Signed-off-by: Gregory CLEMENT <gregory.clement@bootlin.com>
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---
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arch/arm/boot/dts/armada-385-turris-omnia.dts | 30 ++++++++++++++++++++++++++-
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1 file changed, 29 insertions(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/armada-385-turris-omnia.dts
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+++ b/arch/arm/boot/dts/armada-385-turris-omnia.dts
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@@ -82,6 +82,24 @@
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};
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};
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};
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+
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+ sfp: sfp {
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+ compatible = "sff,sfp";
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+ i2c-bus = <&sfp_i2c>;
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+ tx-fault-gpios = <&pcawan 0 GPIO_ACTIVE_HIGH>;
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+ tx-disable-gpios = <&pcawan 1 GPIO_ACTIVE_HIGH>;
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+ rate-select0-gpios = <&pcawan 2 GPIO_ACTIVE_HIGH>;
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+ los-gpios = <&pcawan 3 GPIO_ACTIVE_HIGH>;
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+ mod-def0-gpios = <&pcawan 4 GPIO_ACTIVE_LOW>;
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+ maximum-power-milliwatt = <3000>;
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+
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+ /*
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+ * For now this has to be enabled at boot time by U-Boot when
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+ * a SFP module is present. Read more in the comment in the
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+ * eth2 node below.
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+ */
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+ status = "disabled";
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+ };
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};
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&bm {
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@@ -126,10 +144,20 @@
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/* WAN port */
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ð2 {
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+ /*
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+ * eth2 is connected via a multiplexor to both the SFP cage and to
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+ * ethernet-phy@1. The multiplexor switches the signal to SFP cage when
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+ * a SFP module is present, as determined by the mode-def0 GPIO.
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+ *
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+ * Until kernel supports this configuration properly, in case SFP module
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+ * is present, U-Boot has to enable the sfp node above, remove phy
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+ * handle and add managed = "in-band-status" property.
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+ */
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status = "okay";
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phy-mode = "sgmii";
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phy = <&phy1>;
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phys = <&comphy5 2>;
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+ sfp = <&sfp>;
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buffer-manager = <&bm>;
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bm,pool-long = <2>;
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bm,pool-short = <3>;
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@@ -195,7 +223,7 @@
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/* routed to PCIe2 connector (CN62A) */
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};
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- i2c@4 {
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+ sfp_i2c: i2c@4 {
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#address-cells = <1>;
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#size-cells = <0>;
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reg = <4>;
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