From patchwork Tue Dec 7 16:58:27 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Massot X-Patchwork-Id: 12662287 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 vger.kernel.org (vger.kernel.org [23.128.96.18]) by smtp.lore.kernel.org (Postfix) with ESMTP id 04350C433F5 for ; Tue, 7 Dec 2021 16:58:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S239690AbhLGRCT (ORCPT ); Tue, 7 Dec 2021 12:02:19 -0500 Received: from mail.iot.bzh ([51.75.236.24]:30667 "EHLO frontal.iot.bzh" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231156AbhLGRCT (ORCPT ); Tue, 7 Dec 2021 12:02:19 -0500 Received: from frontal.iot.bzh (localhost [127.0.0.1]) by frontal.iot.bzh (Proxmox) with ESMTP id 0985F45603; Tue, 7 Dec 2021 17:58:47 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=iot.bzh; h=cc:cc :content-transfer-encoding:date:from:from:message-id :mime-version:reply-to:subject:subject:to:to; s=iot.bzh; bh=J//L RnmrEV9XzQJLWe6jbFb/lrFqth3Hxb1+UlGEHl8=; b=SjVMf6wPHeFnE87V6NR3 GhDTjLuaCJa8ecjcTepQrdQyEsESqyr0o/ElifQPwNutIzmBRmsfRynikZQ39rHj N1L1aS+m391DdeGHO3Ihjo6FYnrbIRw+LqUqwOOfq9wVSCR9aQ01UXcJqTtGKvJQ FpoXSgg9qUQC3+pNxCxMSg8cV6ecCiXguW04IYCYA4pOhH5q2zXFuKRI7QzX1k0v YMdh5L2MZZwxRvpLicu9/MFJ3YYn5VZ65L/cXGIAW9fBbVJzgCBYKZLc4erdjj3F 3tkfgn3nLPh/ZK+RMiqp/paHpSxTSRYbdTGzuctklyjTvkAOq7lXiVdGkcNz6XBx Bw== From: Julien Massot To: bjorn.andersson@linaro.org, mathieu.poirier@linaro.org, robh+dt@kernel.org, geert+renesas@glider.be Cc: linux-renesas-soc@vger.kernel.org, linux-remoteproc@vger.kernel.org, devicetree@vger.kernel.org, Julien Massot Subject: [PATCH v3 0/2] Initial Renesas R-Car remoteproc support Date: Tue, 7 Dec 2021 17:58:27 +0100 Message-Id: <20211207165829.195537-1-julien.massot@iot.bzh> X-Mailer: git-send-email 2.33.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-remoteproc@vger.kernel.org Most of the SoCs in the R-Car gen3 SoC series such as H3,M3 and E3 have an 'Arm Realtime Core'. This Realtime core is an Arm Cortex-R7 clocked at 800MHz. This series adds initial support to load a firmware and start this remote processor through the remoteproc subsystem. This series depends on https://patchwork.kernel.org/project/linux-renesas-soc/patch/20211022122101.66998-1-julien.massot@iot.bzh/ to be able to set the Cortex-R7 boot address. One of the way to test this driver is to use the zephyr upstream support for h3ulcb board 'blinky' demo is my favorite testing firmware. To generate a firmware with the zephyr project. follow this starting guide https://docs.zephyrproject.org/2.7.0/getting_started/index.html Then compile your zephyr demo west build -b rcar_h3ulcb_cr7 zephyr/samples/basic/blinky \ -DCONFIG_KERNEL_ENTRY=\"_vector_table\" \ --build-dir h3-blinky Then you can use h3-blinky/zephyr/zephyr.elf as a testing firmware. Patch 1/2 adds the dt-bindings Patch 2/2 is a small driver to cover basic remoteproc usage: loading firmware from filesystem, starting and stopping the Cortex-r7 processor. Julien Massot (2): dt-bindings: remoteproc: Add Renesas R-Car remoteproc: Add Renesas rcar driver .../remoteproc/renesas,rcar-rproc.yaml | 65 +++++ drivers/remoteproc/Kconfig | 11 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/rcar_rproc.c | 223 ++++++++++++++++++ 4 files changed, 300 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/renesas,rcar-rproc.yaml create mode 100644 drivers/remoteproc/rcar_rproc.c