From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 9EB3BC432C0 for ; Mon, 25 Nov 2019 17:06:32 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 629E920674 for ; Mon, 25 Nov 2019 17:06:32 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="aGCusEgI"; dkim=fail reason="signature verification failed" (2048-bit key) header.d=gerhold.net header.i=@gerhold.net header.b="RKUbQWAb" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 629E920674 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=gerhold.net Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=JhiHOrAd5LR3pcr85u6jBPDvDFMVPV4wOUVdHqgW5/I=; b=aGCusEgIJFckVy EVB2YfmTIpAi9k7wzppi0NLM/8OHoDteZH3TbVlbUaDk53ZiSrM0hgXBPjS0IQ7IIM57CSDd/TMVN SsAI1au+EQHxpXvhIMQiZluaCiED5Pnjv51Lbt6WhpJoOe7eafXSmr0xRb5iBVjm4XZQeE6YTPodE B269IpbfOoJnN+YBxjypv1saUVy8UAMqe9EVR7BMtLO3sBeS9VdhH5msevxhzDYZlsayRTebRCpKm NbOr6oNusRKwM0h5/JAjYDgoFXFKSJ3vk3xKWnzgvKaqdz7eaZTQSlxzoBzOk4zCOLQiSu0S/wWzX 2JK9cou14OjDSJpZe5nQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1iZHog-00046P-4a; Mon, 25 Nov 2019 17:06:26 +0000 Received: from mo6-p00-ob.smtp.rzone.de ([2a01:238:20a:202:5300::5]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1iZHo1-0003W7-U4 for linux-arm-kernel@lists.infradead.org; Mon, 25 Nov 2019 17:05:47 +0000 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; t=1574701543; s=strato-dkim-0002; d=gerhold.net; h=Message-Id:Date:Subject:Cc:To:From:X-RZG-CLASS-ID:X-RZG-AUTH:From: Subject:Sender; bh=53qG48IklGrDeQf7pc+hhg5H/dz6HcMn6cl+jKa+Pn8=; b=RKUbQWAbg2JFurjk+QDKMoGu7iusTeUii4BqMD/cyT/CEpVIRgkJbE9Mtzp1XwWTqX 8+LLQtqs+5kTtacVxMnq5tRW623Nj4fdyeGJ0f+PmOLUXI/Nl9rdNd54xeROmmrEMt4M 1Z6bXQe5jwVDo/BORPfGWE1fJoYPqCNaEYDD8y2j2xfN/tG6x6Ejv2znOUiFHWZqrpBq /1qF2Z9CgrVYrjjW2bhpINvGIFWLfgHQY1/HOUPzJ56Z4ZreDz6w7M+PjFF4kUS95X9u jsrn/yDVKp3lukYoelj8mecvvwAqqAu/glCWnG1DdAi86Fxzues/MGsAJJrRO4tJ+VYz 5TIg== X-RZG-AUTH: ":P3gBZUipdd93FF5ZZvYFPugejmSTVR2nRPhVORvLd4SsytBXQr4OGUPX+1NmWArOmLo=" X-RZG-CLASS-ID: mo00 Received: from localhost.localdomain by smtp.strato.de (RZmta 45.0.2 DYNA|AUTH) with ESMTPSA id 304194vAPH5b2r6 (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (curve secp521r1 with 521 ECDH bits, eq. 15360 bits RSA)) (Client did not present a certificate); Mon, 25 Nov 2019 18:05:37 +0100 (CET) From: Stephan Gerhold To: Linus Walleij Subject: [PATCH 1/4] ARM: dts: ux500: Disable I2C/SPI buses by default Date: Mon, 25 Nov 2019 18:04:25 +0100 Message-Id: <20191125170428.76069-1-stephan@gerhold.net> X-Mailer: git-send-email 2.24.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191125_090546_115171_161D9CAE X-CRM114-Status: GOOD ( 12.67 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , devicetree@vger.kernel.org, Stephan Gerhold , linux-kernel@vger.kernel.org, Rob Herring , linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org At the moment, all 5 I2C and 6 SPI buses are probed and exposed to user-space by default - even if they are not muxed to any pins on the board. This means that user-space sees an I2C/SPI bus that cannot be actually used properly. In some cases this was used to put the corresponding pins into a low power sleep mode - but even then the pins first need to be configured by the board-specific device tree part. Avoid exposing unconfigured devices to user-space by disabling the I2C/SPI buses by default. Enable them in the board device trees when needed. Signed-off-by: Stephan Gerhold --- arch/arm/boot/dts/ste-dbx5x0.dtsi | 22 ++++++++++++++++++++++ arch/arm/boot/dts/ste-href.dtsi | 4 ++++ arch/arm/boot/dts/ste-hrefprev60.dtsi | 1 + arch/arm/boot/dts/ste-snowball.dts | 5 +++++ 4 files changed, 32 insertions(+) diff --git a/arch/arm/boot/dts/ste-dbx5x0.dtsi b/arch/arm/boot/dts/ste-dbx5x0.dtsi index a53657b83288..899368aa6ff7 100644 --- a/arch/arm/boot/dts/ste-dbx5x0.dtsi +++ b/arch/arm/boot/dts/ste-dbx5x0.dtsi @@ -646,6 +646,8 @@ clocks = <&prcc_kclk 3 3>, <&prcc_pclk 3 3>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80122000 { @@ -662,6 +664,8 @@ clocks = <&prcc_kclk 1 2>, <&prcc_pclk 1 2>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80128000 { @@ -678,6 +682,8 @@ clocks = <&prcc_kclk 1 6>, <&prcc_pclk 1 6>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@80110000 { @@ -694,6 +700,8 @@ clocks = <&prcc_kclk 2 0>, <&prcc_pclk 2 0>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; i2c@8012a000 { @@ -710,6 +718,8 @@ clocks = <&prcc_kclk 1 9>, <&prcc_pclk 1 10>; clock-names = "i2cclk", "apb_pclk"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80002000 { @@ -724,6 +734,8 @@ <&dma 8 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80003000 { @@ -738,6 +750,8 @@ <&dma 9 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@8011a000 { @@ -753,6 +767,8 @@ <&dma 0 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80112000 { @@ -768,6 +784,8 @@ <&dma 35 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80111000 { @@ -783,6 +801,8 @@ <&dma 33 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; spi@80129000 { @@ -798,6 +818,8 @@ <&dma 40 0 0x0>; /* Logical - MemToDev */ dma-names = "rx", "tx"; power-domains = <&pm_domains DOMAIN_VAPE>; + + status = "disabled"; }; ux500_serial0: uart@80120000 { diff --git a/arch/arm/boot/dts/ste-href.dtsi b/arch/arm/boot/dts/ste-href.dtsi index 7613a40421d5..5eafd5d8a8cd 100644 --- a/arch/arm/boot/dts/ste-href.dtsi +++ b/arch/arm/boot/dts/ste-href.dtsi @@ -39,18 +39,21 @@ pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c0_a_1_default>; pinctrl-1 = <&i2c0_a_1_sleep>; + status = "okay"; }; i2c@80122000 { pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c1_b_2_default>; pinctrl-1 = <&i2c1_b_2_sleep>; + status = "okay"; }; i2c@80128000 { pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c2_b_2_default>; pinctrl-1 = <&i2c2_b_2_sleep>; + status = "okay"; lp5521@33 { compatible = "national,lp5521"; reg = <0x33>; @@ -98,6 +101,7 @@ pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c3_c_2_default>; pinctrl-1 = <&i2c3_c_2_sleep>; + status = "okay"; }; /* ST6G3244ME level translator for 1.8/2.9 V */ diff --git a/arch/arm/boot/dts/ste-hrefprev60.dtsi b/arch/arm/boot/dts/ste-hrefprev60.dtsi index a036defdf164..937f942f0961 100644 --- a/arch/arm/boot/dts/ste-hrefprev60.dtsi +++ b/arch/arm/boot/dts/ste-hrefprev60.dtsi @@ -58,6 +58,7 @@ */ pinctrl-names = "default"; pinctrl-0 = <&ssp0_hrefprev60_mode>; + status = "okay"; }; // External Micro SD slot diff --git a/arch/arm/boot/dts/ste-snowball.dts b/arch/arm/boot/dts/ste-snowball.dts index 8b80dcdf6e5b..ce136412b6da 100644 --- a/arch/arm/boot/dts/ste-snowball.dts +++ b/arch/arm/boot/dts/ste-snowball.dts @@ -307,18 +307,21 @@ pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c0_a_1_default>; pinctrl-1 = <&i2c0_a_1_sleep>; + status = "okay"; }; i2c@80122000 { pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c1_b_2_default>; pinctrl-1 = <&i2c1_b_2_sleep>; + status = "okay"; }; i2c@80128000 { pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c2_b_2_default>; pinctrl-1 = <&i2c2_b_2_sleep>; + status = "okay"; lsm303dlh@18 { /* Accelerometer */ compatible = "st,lsm303dlh-accel"; @@ -369,11 +372,13 @@ pinctrl-names = "default","sleep"; pinctrl-0 = <&i2c3_c_2_default>; pinctrl-1 = <&i2c3_c_2_sleep>; + status = "okay"; }; spi@80002000 { pinctrl-names = "default"; pinctrl-0 = <&ssp0_snowball_mode>; + status = "okay"; }; prcmu@80157000 { -- 2.24.0 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel