From 6a29fa31cdcf9e2ddf74406bd084067b4917edcd Mon Sep 17 00:00:00 2001 From: Linus Walleij Date: Thu, 8 Sep 2016 11:17:14 +0200 Subject: [PATCH] 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 be4f3c8691492934c8ee03dbecb3a3a865ac6cd6 "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 --- arch/arm/boot/dts/Makefile | 1 + arch/arm/boot/dts/arm-realview-eb-bbrevd.dts | 29 ++++++++++++ arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi | 45 +++++++++++++++++++ 3 files changed, 75 insertions(+) create mode 100644 arch/arm/boot/dts/arm-realview-eb-bbrevd.dts create mode 100644 arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi diff --git a/arch/arm/boot/dts/Makefile b/arch/arm/boot/dts/Makefile index faacd52370d2..6d3519fa07c3 100644 --- a/arch/arm/boot/dts/Makefile +++ b/arch/arm/boot/dts/Makefile @@ -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 \ diff --git a/arch/arm/boot/dts/arm-realview-eb-bbrevd.dts b/arch/arm/boot/dts/arm-realview-eb-bbrevd.dts new file mode 100644 index 000000000000..f533c8b49d97 --- /dev/null +++ b/arch/arm/boot/dts/arm-realview-eb-bbrevd.dts @@ -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"; +}; diff --git a/arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi b/arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi new file mode 100644 index 000000000000..a79e1d1d30a7 --- /dev/null +++ b/arch/arm/boot/dts/arm-realview-eb-bbrevd.dtsi @@ -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. + */ +ðernet { + compatible = "smsc,lan9118", "smsc,lan9115"; + phy-mode = "mii"; + smsc,irq-active-high; + smsc,irq-push-pull; + vdd33a-supply = <&veth>; + vddvario-supply = <&veth>; +};