70 lines
2.3 KiB
Diff
70 lines
2.3 KiB
Diff
From 4f11095a4ae00b2fe4cebb21e36ee37cc62f5e1a 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, 1 Jul 2024 13:30:09 +0200
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Subject: [PATCH 07/11] ARM: dts: turris-omnia: Add MCU system-controller 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's MCU provides various features that can be configured over
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I2C at address 0x2a. Add device-tree node.
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This does not carry a Fixes tag - we do not want this to get backported
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to stable kernels for the following reason: U-Boot since v2022.10
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inserts a phy-reset-gpio property into the WAN ethernet node pointing to
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the MCU node if it finds the MCU node with a cznic,turris-omnia-mcu
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compatible. Thus if this change got backported to a stable kernel, the
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WAN interface driver would defer probe indefinitely (since it would wait
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for the turris-omnia-mcu driver which would not be present).
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Signed-off-by: Marek Behún <kabel@kernel.org>
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Reviewed-by: Andrew Lunn <andrew@lunn.ch>
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Reviewed-by: Andy Shevchenko <andy@kernel.org>
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Reviewed-by: Conor Dooley <conor.dooley@microchip.com>
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Acked-by: Bartosz Golaszewski <bartosz.golaszewski@linaro.org>
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Acked-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
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Link: https://lore.kernel.org/r/20240701113010.16447-8-kabel@kernel.org
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Signed-off-by: Arnd Bergmann <arnd@arndb.de>
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---
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.../dts/marvell/armada-385-turris-omnia.dts | 22 ++++++++++++++++++-
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1 file changed, 21 insertions(+), 1 deletion(-)
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--- a/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts
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+++ b/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts
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@@ -218,7 +218,22 @@
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#size-cells = <0>;
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reg = <0>;
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- /* STM32F0 command interface at address 0x2a */
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+ mcu: system-controller@2a {
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+ compatible = "cznic,turris-omnia-mcu";
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+ reg = <0x2a>;
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+
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+ pinctrl-names = "default";
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+ pinctrl-0 = <&mcu_pins>;
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+
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+ interrupt-parent = <&gpio1>;
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+ interrupts = <11 IRQ_TYPE_NONE>;
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+
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+ gpio-controller;
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+ #gpio-cells = <3>;
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+
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+ interrupt-controller;
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+ #interrupt-cells = <2>;
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+ };
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led-controller@2b {
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compatible = "cznic,turris-omnia-leds";
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@@ -503,6 +518,11 @@
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};
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&pinctrl {
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+ mcu_pins: mcu-pins {
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+ marvell,pins = "mpp43";
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+ marvell,function = "gpio";
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+ };
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+
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pcawan_pins: pcawan-pins {
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marvell,pins = "mpp46";
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marvell,function = "gpio";
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