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ARM: dts: add device tree for the RealView EB Rev D 

The RealView EB baseboard revision D is a special case as it appears
to be undocumented in ARM official documents, while the Linux kernel
still contains special code for handling it.

commit be4f3c8691
"Add RealView/EB support for the LAN9118 Ethernet chip"
adds support for the SMSC LAN9118 chip used on the D revision of
the baseboard, but no other traces of hardware deviations for this
variant can be found.

This creates a separate top-level .dts file especially for this
board version, so that it gets registered with the right type
of ethernet controller. The ethernet controller modifications
are then put into a separate .dtsi file so it can be overlaid
on other EB variants using the revision D baseboard.

Signed-off-by: Linus Walleij <linus.walleij@linaro.org>
This commit is contained in:
Linus Walleij 2016-09-08 11:17:14 +02:00
parent c4ad72560d
commit 6a29fa31cd
3 changed files with 75 additions and 0 deletions
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1
arch/arm/boot/dts/Makefile
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@ -608,6 +608,7 @@ dtb-$(CONFIG_ARCH_REALVIEW) += \
arm-realview-pb1176.dtb \
arm-realview-pb11mp.dtb \
arm-realview-eb.dtb \
arm-realview-eb-bbrevd.dtb \
arm-realview-eb-11mp.dtb \
arm-realview-eb-11mp-revb.dtb \
arm-realview-eb-a9mp.dtb \

29
arch/arm/boot/dts/arm-realview-eb-bbrevd.dts Normal file
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@ -0,0 +1,29 @@
/*
* Copyright 2016 Linaro Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/* This derives from the Realview Baseboard, and overlays the new ethernet */
#include "arm-realview-eb.dts"
#include "arm-realview-eb-bbrevd.dtsi"
/ {
model = "ARM RealView Emulation Baseboard Rev D";
};

45
arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi Normal file
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@ -0,0 +1,45 @@
/*
* Copyright 2016 Linaro Ltd
*
* Permission is hereby granted, free of charge, to any person obtaining a copy
* of this software and associated documentation files (the "Software"), to deal
* in the Software without restriction, including without limitation the rights
* to use, copy, modify, merge, publish, distribute, sublicense, and/or sell
* copies of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
*
* The above copyright notice and this permission notice shall be included in
* all copies or substantial portions of the Software.
*
* THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND, EXPRESS OR
* IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF MERCHANTABILITY,
* FITNESS FOR A PARTICULAR PURPOSE AND NONINFRINGEMENT. IN NO EVENT SHALL
* THE AUTHORS OR COPYRIGHT HOLDERS BE LIABLE FOR ANY CLAIM, DAMAGES OR OTHER
* LIABILITY, WHETHER IN AN ACTION OF CONTRACT, TORT OR OTHERWISE, ARISING FROM,
* OUT OF OR IN CONNECTION WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN
* THE SOFTWARE.
*/
/ {
/* Introduce a fixed regulator for the new ethernet controller */
veth: fixedregulator@0 {
compatible = "regulator-fixed";
regulator-name = "veth";
regulator-min-microvolt = <3300000>;
regulator-max-microvolt = <3300000>;
regulator-boot-on;
};
};
/*
* The revision D has a different ethernet controller that the elder boards:
* the older board uses LAN91C111 but the new one uses LAN9118.
*/
&ethernet {
compatible = "smsc,lan9118", "smsc,lan9115";
phy-mode = "mii";
smsc,irq-active-high;
smsc,irq-push-pull;
vdd33a-supply = <&veth>;
vddvario-supply = <&veth>;
};