From patchwork Thu Jul 26 06:53:25 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Oleksij Rempel X-Patchwork-Id: 949502 Return-Path: X-Original-To: incoming-dt@patchwork.ozlabs.org Delivered-To: patchwork-incoming-dt@bilbo.ozlabs.org Authentication-Results: ozlabs.org; spf=none (mailfrom) smtp.mailfrom=vger.kernel.org (client-ip=209.132.180.67; helo=vger.kernel.org; envelope-from=devicetree-owner@vger.kernel.org; receiver=) Authentication-Results: ozlabs.org; dmarc=none (p=none dis=none) header.from=pengutronix.de Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by ozlabs.org (Postfix) with ESMTP id 41bjVh5mVTz9ryn for ; Thu, 26 Jul 2018 16:53:48 +1000 (AEST) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1728939AbeGZIJK (ORCPT ); Thu, 26 Jul 2018 04:09:10 -0400 Received: from metis.ext.pengutronix.de ([85.220.165.71]:46569 "EHLO metis.ext.pengutronix.de" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728779AbeGZIJE (ORCPT ); Thu, 26 Jul 2018 04:09:04 -0400 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 1fia9W-0002FD-Fg; Thu, 26 Jul 2018 08:53:34 +0200 Received: from ore by dude.hi.pengutronix.de with local (Exim 4.91) (envelope-from ) id 1fia9V-0001dR-4L; Thu, 26 Jul 2018 08:53:33 +0200 From: Oleksij Rempel To: Shawn Guo , Fabio Estevam , Rob Herring , Mark Rutland , "A.s. Dong" , Vladimir Zapolskiy , Jassi Brar Cc: Oleksij Rempel , kernel@pengutronix.de, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, dl-linux-imx Subject: [PATCH v7 0/6] add mailbox support for i.MX7D Date: Thu, 26 Jul 2018 08:53:25 +0200 Message-Id: <20180726065331.6186-1-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: devicetree@vger.kernel.org Sender: devicetree-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org 20180626 changes v7: - DT: add i.MX6SX and i.MX7S to the documentation. - imx-mailbox: don't use devm_ functions for startup and shutdown. - imx-mailbox: rename imx_mu_rmw to imx_mu_xcr_rmw and add locks - imx-mailbox: pass of_property_read_bool directly to side_b 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 (4): dt-bindings: mailbox: imx-mu: add generic MU channel support dt-bindings: mailbox: imx-mu: add i.MX6SX and i.MX7S SoCs. 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 | 276 ++++++++++++++++++ 6 files changed, 345 insertions(+), 2 deletions(-) create mode 100644 Documentation/devicetree/bindings/mailbox/fsl,mu.txt create mode 100644 drivers/mailbox/imx-mailbox.c Reviewed-by: Lucas Stach Reviewed-by: Lucas Stach