From patchwork Tue Apr 30 11:51:10 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Marek_Beh=C3=BAn?= X-Patchwork-Id: 13648839 X-Patchwork-Delegate: arnd@arndb.de Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.lore.kernel.org (Postfix) with ESMTPS id 3F13CC10F16 for ; Tue, 30 Apr 2024 11:51:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) id 26527C4AF1B; Tue, 30 Apr 2024 11:51:46 +0000 (UTC) Received: by smtp.kernel.org (Postfix) with ESMTPSA id 227A3C4AF48; Tue, 30 Apr 2024 11:51:42 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1714477906; bh=vBYPRi70YCGps6qezEgrv7Y9Q+Vd7ZSEkDa9qU0m+gY=; h=From:List-Id:To:Cc:Subject:Date:In-Reply-To:References:From; b=Ml5540ygqH9dwe+xOEq49VQJHFHZunKiL91F8qHCUxGLrwPUpyxSLfpqN4fg+WP0q 7a9oGCTPfP8WI2ibSeEEQYioFyCxvfIAzNsSfXYTEjnfeYu8J9lXRjSttiXoFxiZW0 q3SMS31zej/eSpL39HUTCsNVTERl6bLk1uONAmATgIues0OcHlvmSm6bur2I7FWcoQ VxI7xFt1wxry8u8JZk72yuuvp/qQOAwSS1jeFfG2X/klIGNPf52AsbRYfe9RkOwUe4 VEuPoP1jg6oKuKNcsQanRDhAicjGYv3dYXzZouBk2utXyZ/Z1+kUej4dgYA/rRVD2F hyvKdlouzvaig== From: =?utf-8?q?Marek_Beh=C3=BAn?= List-Id: To: Gregory CLEMENT , Arnd Bergmann , soc@kernel.org, arm@kernel.org, Andy Shevchenko , Hans de Goede , =?utf-8?q?Ilpo_J=C3=A4rvinen?= Cc: =?utf-8?q?Marek_Beh=C3=BAn?= , Andrew Lunn , Sebastian Hesselbarth , Rob Herring , Krzysztof Kozlowski , Conor Dooley , =?utf-8?q?Uwe_Kleine-K=C3=B6nig?= , devicetree@vger.kernel.org Subject: [PATCH v8 8/9] ARM: dts: turris-omnia: Add MCU system-controller node Date: Tue, 30 Apr 2024 13:51:10 +0200 Message-ID: <20240430115111.3453-9-kabel@kernel.org> X-Mailer: git-send-email 2.43.2 In-Reply-To: <20240430115111.3453-1-kabel@kernel.org> References: <20240430115111.3453-1-kabel@kernel.org> MIME-Version: 1.0 Turris Omnia's MCU provides various features that can be configured over I2C at address 0x2a. Add device-tree node. This does not carry a Fixes tag - we do not want this to get backported to stable kernels for the following reason: U-Boot since v2022.10 inserts a phy-reset-gpio property into the WAN ethernet node pointing to the MCU node if it finds the MCU node with a cznic,turris-omnia-mcu compatible. Thus if this change got backported to a stable kernel, the WAN interface driver would defer probe indefinitely (since it would wait for the turris-omnia-mcu driver which would not be present). Signed-off-by: Marek Behún --- .../dts/marvell/armada-385-turris-omnia.dts | 22 ++++++++++++++++++- 1 file changed, 21 insertions(+), 1 deletion(-) diff --git a/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts b/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts index 7b755bb4e4e7..59079d63fe27 100644 --- a/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts +++ b/arch/arm/boot/dts/marvell/armada-385-turris-omnia.dts @@ -218,7 +218,22 @@ i2c@0 { #size-cells = <0>; reg = <0>; - /* STM32F0 command interface at address 0x2a */ + mcu: system-controller@2a { + compatible = "cznic,turris-omnia-mcu"; + reg = <0x2a>; + + pinctrl-names = "default"; + pinctrl-0 = <&mcu_pins>; + + interrupt-parent = <&gpio1>; + interrupts = <11 IRQ_TYPE_NONE>; + + gpio-controller; + #gpio-cells = <3>; + + interrupt-controller; + #interrupt-cells = <2>; + }; led-controller@2b { compatible = "cznic,turris-omnia-leds"; @@ -501,6 +516,11 @@ fixed-link { }; &pinctrl { + mcu_pins: mcu-pins { + marvell,pins = "mpp43"; + marvell,function = "gpio"; + }; + pcawan_pins: pcawan-pins { marvell,pins = "mpp46"; marvell,function = "gpio";