From patchwork Sun Jul 22 06:39:19 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539195 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 7EDD8174A for ; Sun, 22 Jul 2018 06:39:54 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 507342793B for ; Sun, 22 Jul 2018 06:39:54 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 41492279E0; Sun, 22 Jul 2018 06:39:54 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 2EA712793B for ; Sun, 22 Jul 2018 06:39:53 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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:List-Owner; bh=gnKZjiw3tUC7gmptwJvLROCQdyGZzqo9JNKbuvW7qXk=; b=R7FfLPE/z/nor5wxq2WjcDc9dH izPZ6T6XCvjzklyQwiEnYaJexRkDBEX9NjRrvj5uvuRhUGc2UAAOrfbboBhRBs0JPgw6vhSoXuLp4 mrc6kcpqXk9AyxDkA996ukLuKics24PzNIvDvMp3AOqdn2OPdLmZ/LkwI0/ZFBkyQTi6LdteSNhmV MV7UNiD7J4NaJLWFqsnNfdECP4+2XLPsgTBqUVrMsOPUxAd/qR0+zBDdY7K0/puVunJ87kZ7LibsX CDgIv0EtIWeKvPdGpLxmk7YWPyqGzfxrztLCdLS1ZyQ4HDm0obtfZRyMuqqE9nYh8YKAGdXPUNqnd I58rfjhQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh821-0001kO-5Y; Sun, 22 Jul 2018 06:39:49 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh81x-0001hz-25 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 06:39:47 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fh81e-0004Wj-QL; Sun, 22 Jul 2018 08:39:26 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fh81d-0007se-Kj; Sun, 22 Jul 2018 08:39:25 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy Subject: [PATCH v6 1/5] dt-bindings: mailbox: allow mbox-cells to be equal to 0 Date: Sun, 22 Jul 2018 08:39:19 +0200 Message-Id: <20180722063923.30222-2-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180722063923.30222-1-o.rempel@pengutronix.de> References: <20180722063923.30222-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180721_233945_793491_FF8627AC X-CRM114-Status: GOOD ( 12.41 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, dl-linux-imx , kernel@pengutronix.de, Sudeep Holla , linux-arm-kernel@lists.infradead.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Dong Aisheng Mailbox devices may have only one channel which means the mbox-cells at least 1 does not make sense for this type devices. Let's remove that limitation to allow the mbox-cells to be equal to 0. Cc: Mark Rutland Cc: Sudeep Holla Cc: devicetree@vger.kernel.org Cc: linux-kernel@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Dong Aisheng --- Documentation/devicetree/bindings/mailbox/mailbox.txt | 3 +-- 1 file changed, 1 insertion(+), 2 deletions(-) diff --git a/Documentation/devicetree/bindings/mailbox/mailbox.txt b/Documentation/devicetree/bindings/mailbox/mailbox.txt index af8ecee2ac68..c2fcd054141a 100644 --- a/Documentation/devicetree/bindings/mailbox/mailbox.txt +++ b/Documentation/devicetree/bindings/mailbox/mailbox.txt @@ -6,8 +6,7 @@ assign appropriate mailbox channel to client drivers. * Mailbox Controller Required property: -- #mbox-cells: Must be at least 1. Number of cells in a mailbox - specifier. +- #mbox-cells: Number of cells in a mailbox specifier. Example: mailbox: mailbox { From patchwork Sun Jul 22 06:39:20 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539205 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1B037112B for ; Sun, 22 Jul 2018 06:41:24 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 0527027968 for ; Sun, 22 Jul 2018 06:41:24 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id ECCD52793B; Sun, 22 Jul 2018 06:41:23 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 8AF472793B for ; Sun, 22 Jul 2018 06:41:23 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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:List-Owner; bh=mYGGbEfjqJJZT0Kp7rnE8q7T6XYq7JwgAc4haXib7gU=; b=DncZrGeaFFpXdHsru6UNG1AKhU 5XemX63LC2ZZv5PAuhLEKlX08CyYorLlhjcXpeGS6n77cdtP5ln+cwS7hBxXhMDY7BzRqPvHwYd5/ 8TjszH6qlPNJJF5T9hRohiLLpaGGnhNGno0jbLd+b5Ub25WvfyQWoyzvULNI1h+xMA+J8fj417L72 fNsky3U9/HblGrzCPisP3cFE0AIPZ+x+BPIsnWGfHq6zICB+sMX8x3frXnxNvC3K6xZ0xZs5RIydQ EJvGXkcrMj7PdnfLAwBDUu60/nmRv/FfaSA4/VuftnlxNbiNwwpIFPzCkIOM4Gfsq6f9LKNDbmJq4 Y36zzRzQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh83P-0004EH-9H; Sun, 22 Jul 2018 06:41:15 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh81x-0001hr-29 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 06:39:48 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fh81e-0004Wk-QQ; Sun, 22 Jul 2018 08:39:26 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fh81d-0007sn-Ld; Sun, 22 Jul 2018 08:39:25 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy Subject: [PATCH v6 2/5] dt-bindings: arm: fsl: add mu binding doc Date: Sun, 22 Jul 2018 08:39:20 +0200 Message-Id: <20180722063923.30222-3-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180722063923.30222-1-o.rempel@pengutronix.de> References: <20180722063923.30222-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180721_233945_801244_1F28F4C4 X-CRM114-Status: GOOD ( 11.21 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sascha Hauer , dl-linux-imx MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP From: Dong Aisheng The Messaging Unit module enables two processors within the SoC to communicate and coordinate by passing messages (e.g. data, status and control) through the MU interface. Cc: Shawn Guo Cc: Sascha Hauer Cc: Fabio Estevam Cc: Mark Rutland Cc: devicetree@vger.kernel.org Reviewed-by: Rob Herring Signed-off-by: Dong Aisheng --- .../devicetree/bindings/mailbox/fsl,mu.txt | 34 +++++++++++++++++++ 1 file changed, 34 insertions(+) create mode 100644 Documentation/devicetree/bindings/mailbox/fsl,mu.txt diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt new file mode 100644 index 000000000000..90e4905dfc69 --- /dev/null +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt @@ -0,0 +1,34 @@ +NXP i.MX Messaging Unit (MU) +-------------------------------------------------------------------- + +The Messaging Unit module enables two processors within the SoC to +communicate and coordinate by passing messages (e.g. data, status +and control) through the MU interface. The MU also provides the ability +for one processor to signal the other processor using interrupts. + +Because the MU manages the messaging between processors, the MU uses +different clocks (from each side of the different peripheral buses). +Therefore, the MU must synchronize the accesses from one side to the +other. The MU accomplishes synchronization using two sets of matching +registers (Processor A-facing, Processor B-facing). + +Messaging Unit Device Node: +============================= + +Required properties: +------------------- +- compatible : should be "fsl,-mu", the supported chips include + imx8qxp, imx8qm. +- reg : Should contain the registers location and length +- interrupts : Interrupt number. The interrupt specifier format depends + on the interrupt controller parent. +- #mbox-cells: Must be 0. Number of cells in a mailbox + +Examples: +-------- +lsio_mu0: mailbox@5d1b0000 { + compatible = "fsl,imx8qxp-mu"; + reg = <0x0 0x5d1b0000 0x0 0x10000>; + interrupts = ; + #mbox-cells = <0>; +}; From patchwork Sun Jul 22 06:39:21 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539197 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 1C5DF174A for ; Sun, 22 Jul 2018 06:40:02 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F1E5A279E0 for ; Sun, 22 Jul 2018 06:40:01 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E4AD127B2F; Sun, 22 Jul 2018 06:40:01 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 920D9279E0 for ; Sun, 22 Jul 2018 06:40:01 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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:List-Owner; bh=TE2xITDwGwqi1LO4epXOjvHT/SWyXWOkFrUBwAhAqGg=; b=QwuT4IBR6EdS6YG+OtOp2GuUeM X8eHryAg8vTlZztOlWk1N5jWpLzVDy9lnQQ0ogd3TcthccDHQwrxs0mZobwl1la/KBxuHoF9SIrZP e/9YfbqFD0o7VB+KWvA+pzWw0HQCTwcztgyNtsLWdbo/SoyOebVq8SVITC/mbII9qoNpoW1ESXdPb ZYTeh2kWm9kc3MeMnQNGFVQVt/uVLRVhbcyUc09vxCIdoaFCWMXYhku9cvrkEb0fBVAZNLn/jxIwQ 7fUqMCg4Z8Vqu1jK1sTpBpDooQXxcPnf3agi9zW6Vjc+8UsBmhchbqflPSI5vSqmPx1qq6AFlhfe3 42uGH7Fw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh828-0001u0-OJ; Sun, 22 Jul 2018 06:39:56 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh81x-0001hq-28 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 06:39:47 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fh81e-0004Wl-QN; Sun, 22 Jul 2018 08:39:26 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fh81d-0007sw-MU; Sun, 22 Jul 2018 08:39:25 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy Subject: [PATCH v6 3/5] dt-bindings: mailbox: imx-mu: add generic MU channel support Date: Sun, 22 Jul 2018 08:39:21 +0200 Message-Id: <20180722063923.30222-4-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180722063923.30222-1-o.rempel@pengutronix.de> References: <20180722063923.30222-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180721_233945_791770_8E7F1509 X-CRM114-Status: UNSURE ( 9.54 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oleksij Rempel , dl-linux-imx , linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, devicetree@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Each MU has four pairs of rx/tx data register with four rx/tx interrupts which can also be used as a separate channel. Reviewed-by: Dong Aisheng Signed-off-by: Oleksij Rempel Reviewed-by: Rob Herring --- Documentation/devicetree/bindings/mailbox/fsl,mu.txt | 9 ++++++++- 1 file changed, 8 insertions(+), 1 deletion(-) diff --git a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt index 90e4905dfc69..113d6ab931ef 100644 --- a/Documentation/devicetree/bindings/mailbox/fsl,mu.txt +++ b/Documentation/devicetree/bindings/mailbox/fsl,mu.txt @@ -22,7 +22,14 @@ Required properties: - reg : Should contain the registers location and length - interrupts : Interrupt number. The interrupt specifier format depends on the interrupt controller parent. -- #mbox-cells: Must be 0. Number of cells in a mailbox +- #mbox-cells: Must be: + 0 - for single channel mode. i.MX8* SCU protocol specific. + 1 - for multichannel (generic) mode. + +Optional properties: +------------------- +- clocks : phandle to the input clock. +- fsl,mu-side-b : Should be set for side B MU. Examples: -------- From patchwork Sun Jul 22 06:39:22 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539201 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id BD15517EC for ; Sun, 22 Jul 2018 06:40:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id A8B862793B for ; Sun, 22 Jul 2018 06:40:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9BD85279E0; Sun, 22 Jul 2018 06:40:57 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 487CF2793B for ; Sun, 22 Jul 2018 06:40:57 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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:List-Owner; bh=5HRxkmjAirjQyF1Atr/r1+bSs8LhVm47ha35pIUErHs=; b=qjxvsbYYXadH+NQgJFRxrxkh2D 9D/kNCNAg5cVRDvof5Aj+CckRbh8mMPEBTX3TfdTAmSB2TccHrIB5Ms7QOreB/y4jZt/DlvCd09nX OPy3Qx8o1mp+Tt+SQ3ogjYDbXgY1m2NhrPXVrcp80zbREk1kctukU/P+/fBwXPpqbPx2RfAPDvZoI Re5mqafmhag/cgrYv2LEd/aSikHSG630A2PU5k5ftVbg3kvR1u36oTnEWGi3Irr03emHGbeq7zcne hx9AdlTkLBA++t232RUfSWxPB1hs6WPP0fI1LQMk5C5MVi+eKpd9t94ImhrtckeDuFyyFFbK8c1rf 1OPpxdEg==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh832-0003ai-30; Sun, 22 Jul 2018 06:40:52 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh81x-0001hn-27 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 06:39:48 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fh81e-0004Wm-QP; Sun, 22 Jul 2018 08:39:26 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fh81d-0007t5-NJ; Sun, 22 Jul 2018 08:39:25 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy Subject: [PATCH v6 4/5] ARM: dts: imx7s: add i.MX7 messaging unit support Date: Sun, 22 Jul 2018 08:39:22 +0200 Message-Id: <20180722063923.30222-5-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180722063923.30222-1-o.rempel@pengutronix.de> References: <20180722063923.30222-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180721_233945_798031_28337537 X-CRM114-Status: GOOD ( 10.39 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oleksij Rempel , dl-linux-imx , linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, devicetree@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP Define the Messaging Unit (MU) for i.MX7 in the processor's dtsi. The respective driver is added in the next commit. Reviewed-by: Dong Aisheng Signed-off-by: Oleksij Rempel --- arch/arm/boot/dts/imx7s.dtsi | 19 +++++++++++++++++++ 1 file changed, 19 insertions(+) diff --git a/arch/arm/boot/dts/imx7s.dtsi b/arch/arm/boot/dts/imx7s.dtsi index ce85b3ca1a55..191a0286fa3b 100644 --- a/arch/arm/boot/dts/imx7s.dtsi +++ b/arch/arm/boot/dts/imx7s.dtsi @@ -1001,6 +1001,25 @@ status = "disabled"; }; + mu0a: mailbox@30aa0000 { + compatible = "fsl,imx7s-mu", "fsl,imx6sx-mu"; + reg = <0x30aa0000 0x10000>; + interrupts = ; + clocks = <&clks IMX7D_MU_ROOT_CLK>; + #mbox-cells = <1>; + status = "disabled"; + }; + + mu0b: mailbox@30ab0000 { + compatible = "fsl,imx7s-mu", "fsl,imx6sx-mu"; + reg = <0x30ab0000 0x10000>; + interrupts = ; + clocks = <&clks IMX7D_MU_ROOT_CLK>; + #mbox-cells = <1>; + fsl,mu-side-b; + status = "disabled"; + }; + usbotg1: usb@30b10000 { compatible = "fsl,imx7d-usb", "fsl,imx27-usb"; reg = <0x30b10000 0x200>; From patchwork Sun Jul 22 06:39:23 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539203 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id C14C9112B for ; Sun, 22 Jul 2018 06:41:06 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id AC5D32793B for ; Sun, 22 Jul 2018 06:41:06 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 9FFB8279E0; Sun, 22 Jul 2018 06:41:06 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-2.9 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id 07F642793B for ; Sun, 22 Jul 2018 06:41:05 +0000 (UTC) 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:MIME-Version:Cc:List-Subscribe: List-Help:List-Post:List-Archive:List-Unsubscribe:List-Id:References: In-Reply-To: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:List-Owner; bh=/5IvX3zjnjO27Gv4M7H70NxUilX1cE86S7WBHStFyG8=; b=b91ypeM7pP6d5dDeZIUDIRHHA6 11j02DD/6kSZbu2gls2nqEmMF3hPkSuHw+6Ug/DTXDRLPW0b8Pv0D6aJXkUfuRz6y9cm1nXMZb5q7 hr/5vIp0YlKxC+E9wnY/9Q7YlKWjdbnYnwgH+qCE8oB2mjmQ/midDB/XalObnCekFQf92KXzJeGVN +T5ZzKfKOXfkWTrZliUWZ4ZtGJRZdbBD0wa2ofgKan0t7QlV2JEEMnUwjJXcRqEE/zYSLhWemmrVF 6VC3BTZPu0MJRVBCYZWHArCVgHVdmr85drH8iM+BfLYr7TAVg7PaBsCfOzAqyGUjBZRRMNFE47hIu RP/+XWzQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh83C-0003rY-CW; Sun, 22 Jul 2018 06:41:02 +0000 Received: from metis.ext.pengutronix.de ([2001:67c:670:201:290:27ff:fe1d:cc33]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1fh81x-0001hp-26 for linux-arm-kernel@lists.infradead.org; Sun, 22 Jul 2018 06:39:49 +0000 Received: from dude.hi.pengutronix.de ([2001:67c:670:100:1d::7]) by metis.ext.pengutronix.de with esmtps (TLS1.2:ECDHE_RSA_AES_256_GCM_SHA384:256) (Exim 4.89) (envelope-from ) id 1fh81e-0004Wn-QM; Sun, 22 Jul 2018 08:39:26 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fh81d-0007tF-O6; Sun, 22 Jul 2018 08:39:25 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy Subject: [PATCH v6 5/5] mailbox: Add support for i.MX7D messaging unit Date: Sun, 22 Jul 2018 08:39:23 +0200 Message-Id: <20180722063923.30222-6-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 In-Reply-To: <20180722063923.30222-1-o.rempel@pengutronix.de> References: <20180722063923.30222-1-o.rempel@pengutronix.de> X-SA-Exim-Connect-IP: 2001:67c:670:100:1d::7 X-SA-Exim-Mail-From: ore@pengutronix.de X-SA-Exim-Scanned: No (on metis.ext.pengutronix.de); SAEximRunCond expanded to false X-PTX-Original-Recipient: linux-arm-kernel@lists.infradead.org X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20180721_233945_797038_E911F6A7 X-CRM114-Status: GOOD ( 19.57 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Oleksij Rempel , dl-linux-imx , linux-arm-kernel@lists.infradead.org, kernel@pengutronix.de, devicetree@vger.kernel.org MIME-Version: 1.0 Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org X-Virus-Scanned: ClamAV using ClamSMTP The Mailbox controller is able to send messages (up to 4 32 bit words) between the endpoints. This driver was tested using the mailbox-test driver sending messages between the Cortex-A7 and the Cortex-M4. Reviewed-by: Dong Aisheng Signed-off-by: Oleksij Rempel Reviewed-by: Vladimir Zapolskiy --- drivers/mailbox/Kconfig | 6 + drivers/mailbox/Makefile | 2 + drivers/mailbox/imx-mailbox.c | 273 ++++++++++++++++++++++++++++++++++ 3 files changed, 281 insertions(+) create mode 100644 drivers/mailbox/imx-mailbox.c diff --git a/drivers/mailbox/Kconfig b/drivers/mailbox/Kconfig index a2bb27446dce..79060ddc380d 100644 --- a/drivers/mailbox/Kconfig +++ b/drivers/mailbox/Kconfig @@ -15,6 +15,12 @@ config ARM_MHU The controller has 3 mailbox channels, the last of which can be used in Secure mode only. +config IMX_MBOX + tristate "i.MX Mailbox" + depends on ARCH_MXC || COMPILE_TEST + help + Mailbox implementation for i.MX Messaging Unit (MU). + config PLATFORM_MHU tristate "Platform MHU Mailbox" depends on OF diff --git a/drivers/mailbox/Makefile b/drivers/mailbox/Makefile index cc23c3a43fcd..ba2fe1b6dd62 100644 --- a/drivers/mailbox/Makefile +++ b/drivers/mailbox/Makefile @@ -7,6 +7,8 @@ obj-$(CONFIG_MAILBOX_TEST) += mailbox-test.o obj-$(CONFIG_ARM_MHU) += arm_mhu.o +obj-$(CONFIG_IMX_MBOX) += imx-mailbox.o + obj-$(CONFIG_PLATFORM_MHU) += platform_mhu.o obj-$(CONFIG_PL320_MBOX) += pl320-ipc.o diff --git a/drivers/mailbox/imx-mailbox.c b/drivers/mailbox/imx-mailbox.c new file mode 100644 index 000000000000..29cf2876db01 --- /dev/null +++ b/drivers/mailbox/imx-mailbox.c @@ -0,0 +1,273 @@ +// SPDX-License-Identifier: GPL-2.0 +/* + * Copyright (c) 2018 Pengutronix, Oleksij Rempel + */ + +#include +#include +#include +#include +#include +#include +#include + +/* Transmit Register */ +#define IMX_MU_xTRn(x) (0x00 + 4 * (x)) +/* Receive Register */ +#define IMX_MU_xRRn(x) (0x10 + 4 * (x)) +/* Status Register */ +#define IMX_MU_xSR 0x20 +#define IMX_MU_xSR_TEn(x) BIT(20 + (3 - (x))) +#define IMX_MU_xSR_RFn(x) BIT(24 + (3 - (x))) +#define IMX_MU_xSR_BRDIP BIT(9) + +/* Control Register */ +#define IMX_MU_xCR 0x24 +/* Transmit Interrupt Enable */ +#define IMX_MU_xCR_TIEn(x) BIT(20 + (3 - (x))) +/* Receive Interrupt Enable */ +#define IMX_MU_xCR_RIEn(x) BIT(24 + (3 - (x))) + +#define IMX_MU_CHANS 4u + +struct imx_mu_con_priv { + int irq; + unsigned int idx; + char *irq_desc; +}; + +struct imx_mu_priv { + struct device *dev; + void __iomem *base; + + struct mbox_controller mbox; + struct mbox_chan mbox_chans[IMX_MU_CHANS]; + + struct imx_mu_con_priv con_priv[IMX_MU_CHANS]; + struct clk *clk; + + bool side_b; +}; + +static struct imx_mu_priv *to_imx_mu_priv(struct mbox_controller *mbox) +{ + return container_of(mbox, struct imx_mu_priv, mbox); +} + +static void imx_mu_write(struct imx_mu_priv *priv, u32 val, u32 offs) +{ + iowrite32(val, priv->base + offs); +} + +static u32 imx_mu_read(struct imx_mu_priv *priv, u32 offs) +{ + return ioread32(priv->base + offs); +} + +static u32 imx_mu_rmw(struct imx_mu_priv *priv, u32 offs, u32 set, u32 clr) +{ + u32 val; + + val = imx_mu_read(priv, offs); + val &= ~clr; + val |= set; + imx_mu_write(priv, val, offs); + + return val; +} + +static irqreturn_t imx_mu_isr(int irq, void *p) +{ + struct mbox_chan *chan = p; + struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); + struct imx_mu_con_priv *cp = chan->con_priv; + u32 val, ctrl, dat; + + ctrl = imx_mu_read(priv, IMX_MU_xCR); + val = imx_mu_read(priv, IMX_MU_xSR); + val &= IMX_MU_xSR_TEn(cp->idx) | IMX_MU_xSR_RFn(cp->idx); + val &= ctrl & (IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); + if (!val) + return IRQ_NONE; + + if (val & IMX_MU_xSR_TEn(cp->idx)) { + imx_mu_rmw(priv, IMX_MU_xCR, 0, IMX_MU_xCR_TIEn(cp->idx)); + mbox_chan_txdone(chan, 0); + } + + if (val & IMX_MU_xSR_RFn(cp->idx)) { + dat = imx_mu_read(priv, IMX_MU_xRRn(cp->idx)); + mbox_chan_received_data(chan, (void *)&dat); + } + + return IRQ_HANDLED; +} + +static bool imx_mu_last_tx_done(struct mbox_chan *chan) +{ + struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); + struct imx_mu_con_priv *cp = chan->con_priv; + u32 val; + + val = imx_mu_read(priv, IMX_MU_xSR); + /* test if transmit register is empty */ + return val & IMX_MU_xSR_TEn(cp->idx); +} + +static int imx_mu_send_data(struct mbox_chan *chan, void *data) +{ + struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); + struct imx_mu_con_priv *cp = chan->con_priv; + u32 *arg = data; + + if (!imx_mu_last_tx_done(chan)) + return -EBUSY; + + imx_mu_write(priv, *arg, IMX_MU_xTRn(cp->idx)); + imx_mu_rmw(priv, IMX_MU_xCR, IMX_MU_xSR_TEn(cp->idx), 0); + + return 0; +} + +static int imx_mu_startup(struct mbox_chan *chan) +{ + struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); + struct imx_mu_con_priv *cp = chan->con_priv; + int ret; + + cp->irq_desc = devm_kasprintf(priv->dev, GFP_KERNEL, "imx_mu_chan[%i]", + cp->idx); + if (!cp->irq_desc) + return -ENOMEM; + + ret = devm_request_irq(priv->dev, cp->irq, imx_mu_isr, + IRQF_SHARED, cp->irq_desc, chan); + if (ret) { + dev_err(priv->dev, + "Unable to acquire IRQ %d\n", cp->irq); + return ret; + } + + imx_mu_rmw(priv, IMX_MU_xCR, IMX_MU_xCR_RIEn(cp->idx), 0); + + return 0; +} + +static void imx_mu_shutdown(struct mbox_chan *chan) +{ + struct imx_mu_priv *priv = to_imx_mu_priv(chan->mbox); + struct imx_mu_con_priv *cp = chan->con_priv; + + imx_mu_rmw(priv, IMX_MU_xCR, 0, + IMX_MU_xCR_TIEn(cp->idx) | IMX_MU_xCR_RIEn(cp->idx)); + + devm_free_irq(priv->dev, cp->irq, chan); + devm_kfree(priv->dev, cp->irq_desc); +} + +static const struct mbox_chan_ops imx_mu_ops = { + .send_data = imx_mu_send_data, + .startup = imx_mu_startup, + .shutdown = imx_mu_shutdown, +}; + +static void imx_mu_init_generic(struct imx_mu_priv *priv) +{ + if (priv->side_b) + return; + + /* Set default MU configuration */ + imx_mu_write(priv, 0, IMX_MU_xCR); +} + +static int imx_mu_probe(struct platform_device *pdev) +{ + struct device *dev = &pdev->dev; + struct device_node *np = dev->of_node; + struct resource *iomem; + struct imx_mu_priv *priv; + unsigned int i; + int irq, ret; + + priv = devm_kzalloc(dev, sizeof(*priv), GFP_KERNEL); + if (!priv) + return -ENOMEM; + + priv->dev = dev; + + iomem = platform_get_resource(pdev, IORESOURCE_MEM, 0); + priv->base = devm_ioremap_resource(&pdev->dev, iomem); + if (IS_ERR(priv->base)) + return PTR_ERR(priv->base); + + irq = platform_get_irq(pdev, 0); + if (irq < 0) + return irq; + + priv->clk = devm_clk_get(dev, NULL); + if (IS_ERR(priv->clk)) { + if (PTR_ERR(priv->clk) != -ENOENT) + return PTR_ERR(priv->clk); + + priv->clk = NULL; + } + + ret = clk_prepare_enable(priv->clk); + if (ret) { + dev_err(dev, "Failed to enable clock\n"); + return ret; + } + + for (i = 0; i < IMX_MU_CHANS; i++) { + struct imx_mu_con_priv *cp = &priv->con_priv[i]; + + cp->idx = i; + cp->irq = irq; + priv->mbox_chans[i].con_priv = cp; + } + + if (of_property_read_bool(np, "fsl,mu-side-b")) + priv->side_b = true; + + priv->mbox.dev = dev; + priv->mbox.ops = &imx_mu_ops; + priv->mbox.chans = priv->mbox_chans; + priv->mbox.num_chans = IMX_MU_CHANS; + priv->mbox.txdone_irq = true; + + platform_set_drvdata(pdev, priv); + + imx_mu_init_generic(priv); + + return mbox_controller_register(&priv->mbox); +} + +static int imx_mu_remove(struct platform_device *pdev) +{ + struct imx_mu_priv *priv = platform_get_drvdata(pdev); + + mbox_controller_unregister(&priv->mbox); + clk_disable_unprepare(priv->clk); + + return 0; +} + +static const struct of_device_id imx_mu_dt_ids[] = { + { .compatible = "fsl,imx6sx-mu" }, + { }, +}; +MODULE_DEVICE_TABLE(of, imx_mu_dt_ids); + +static struct platform_driver imx_mu_driver = { + .probe = imx_mu_probe, + .remove = imx_mu_remove, + .driver = { + .name = "imx_mu", + .of_match_table = imx_mu_dt_ids, + }, +}; +module_platform_driver(imx_mu_driver); + +MODULE_AUTHOR("Oleksij Rempel "); +MODULE_DESCRIPTION("Message Unit driver for i.MX"); +MODULE_LICENSE("GPL v2");