From patchwork Sun Jul 22 06:39:18 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 10539199 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 88B5D14BC for ; Sun, 22 Jul 2018 06:40:16 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 718632793B for ; Sun, 22 Jul 2018 06:40:16 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 65DD9279E0; Sun, 22 Jul 2018 06:40:16 +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 0A57D2793B for ; Sun, 22 Jul 2018 06:40:16 +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: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=qLcl7iRwGSjB5u01AH0UutEKylUh6GfHjYOH+5Q+3oc=; b=FfB 8eavGTwb8Mrl1EDSApHc6w/lZqdzdeHq7ua1u1sLYnbyzfN/43QqWqrzqaICn3PWcGDx+JW1tRtTq tlwwsinZ4beu1UhlCjIniN8eOdNwJp36RsnxPKTfSK0AZ6IzeQhoxj9nTtU1bh9722E89IdAc+eOg U04KkAfRbwYEj8GXt3r7ofGM7WUBzozXB3qGX8SmNtbvF9rzxJyTXnEOUifHGVfjt2PKxCQUVYyl4 h36Rr6iFJ0NRYo4SIDgMk52ohs8wiZTweJhKisKGEWKp2j8bBAJ9T9K9gIjJKGzq7dZxyvNOQdltL nCJKFtRmVcZlhUIwo1Lp+ra/GFbGo5Q==; 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 1fh82N-0002JO-Va; Sun, 22 Jul 2018 06:40:11 +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-0001ho-24 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-0004Wi-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-0007sT-Jo; 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 0/5] add mailbox support for i.MX7D Date: Sun, 22 Jul 2018 08:39:18 +0200 Message-Id: <20180722063923.30222-1-o.rempel@pengutronix.de> X-Mailer: git-send-email 2.18.0 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_DEDB73B4 X-CRM114-Status: GOOD ( 13.49 ) 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 20180622 changes v6: - include one more patch provided by Aisheng - DT: add fall back compatible fsl,imx6sx-mu - imx-mailbox: for now, use only fsl,imx6sx-mu 20180621 changes v5: - DT: revert most of the changes from previous version - imx-mailbox: remove struct imx_mu_cfg - imx-mailbox: remove !! from imx_mu_last_tx_done() 20180618 changes v4: - DT: change fsl,mu-side-a to fsl,mu-side-b - DT: split the patches. - DT: add all currently known SoCs. - imx-mailbox: free allocated irq name on channel shutdown - imx-mailbox: rename *_imx7 functions to *_generic 20180615 changes v3: - DT: remove prosaic part of documentation. It describes software or firmware specific usage and not relevant for HW description. - DT: use -mu instead of -mu- and add fsl,mu-side-a parameter. - DT: add most of know i.MX variants with MU - imx-mailbox: use macros instead of precalculated bit index. - imx-mailbox: remove warning message for clk. - imx-mailbox: use imx_mu_chan[%idx] for devm_request_irq. - imx-mailbox: depend on ARCH_MXC instead of SOX_IMX7 20180615 changes v2: - DT: use mailbox@ instead of mu@ - DT: change interrupts description - clk: use imx_clk_gate4 instead of imx_clk_gate2 - imx-mailbox: remove last_tx_done support - imx-mailbox: fix module description This patches are providing support for mailbox (Messaging Unit) for i.MX7D. Functionality was tested on PHYTEC phyBOARD-Zeta i.MX7D with Linux running on all cores: ARM Cortex-A7 and ARM Cortex-M4. Both parts of i.MX messaging Unit are visible for all CPUs available on i.MX7D. Communication worked independent of MU side in combination with CPU. For example MU-A used on ARM Cortex-A7 and MU-B used on ARM Cortex-M4 or other ways around. Dong Aisheng (2): dt-bindings: mailbox: allow mbox-cells to be equal to 0 dt-bindings: arm: fsl: add mu binding doc Oleksij Rempel (3): dt-bindings: mailbox: imx-mu: add generic MU channel support ARM: dts: imx7s: add i.MX7 messaging unit support mailbox: Add support for i.MX7D messaging unit .../devicetree/bindings/mailbox/fsl,mu.txt | 41 +++ .../devicetree/bindings/mailbox/mailbox.txt | 3 +- arch/arm/boot/dts/imx7s.dtsi | 19 ++ drivers/mailbox/Kconfig | 6 + drivers/mailbox/Makefile | 2 + drivers/mailbox/imx-mailbox.c | 273 ++++++++++++++++++ 6 files changed, 342 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/mailbox/fsl,mu.txt create mode 100644 drivers/mailbox/imx-mailbox.c