From patchwork Mon Nov 15 13:50:29 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Julien Massot X-Patchwork-Id: 12619531 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 mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 61D57C433F5 for ; Mon, 15 Nov 2021 13:51:23 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 476AB60FD7 for ; Mon, 15 Nov 2021 13:51:23 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231645AbhKONyI (ORCPT ); Mon, 15 Nov 2021 08:54:08 -0500 Received: from mail.iot.bzh ([51.75.236.24]:19975 "EHLO frontal.iot.bzh" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231890AbhKONx4 (ORCPT ); Mon, 15 Nov 2021 08:53:56 -0500 Received: from frontal.iot.bzh (localhost [127.0.0.1]) by frontal.iot.bzh (Proxmox) with ESMTP id 536611B86E; Mon, 15 Nov 2021 14:50:50 +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=hrKr EUYrzQgN3KGQcYb9/M4bwCULK+r7SkxMN+yd1u0=; b=HR4C7W9fLE/R3OScreHA H4/PSO09mIRI0Zu/GfYQVZ23cJbrre4AmmGKYxDVSSN0GeVEzutOZS/Mu0QPnADE 8dC3ay7xpkYhnBasosF84mFp5IiRQ+xu1Jfx5nG543xQFiyaU8x9vnBdONd4hyr9 O8dib+S5AMqZMowwGUgTZaFcaoSoKWhqPwB01MBk4rR+efvJJxSg/TsQptHAFDJq 3f5+A97KysxLdTFGs1GtSrMrBlK98RfooeW8E0C5qlGq8/F4N8kL0ktxHwwRHxsr gpApJN8Dd4Ua54s16q7+ucX3QsVX+dhDG9H2Rrj632LjeiNjKiv+bYsiXtJ3ZbAX 5Q== 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 v1 0/3] Initial Renesas R-Car remoteproc support Date: Mon, 15 Nov 2021 14:50:29 +0100 Message-Id: <20211115135032.129227-1-julien.massot@iot.bzh> X-Mailer: git-send-email 2.31.1 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-renesas-soc@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 1/3 adds the dt-bindings Patch 2/3 adds entries into the dts/dtsi files for r8a77951, my testing platform. This driver has also been tested on E3 and M3, but lacks proper zephyr support at the moment. Modifications to r8a77951-ulcb.dts are given as usage example and may be dropped in future patchset since it use some memory range that may be reserved for other usage. Patch 3/3 is a small driver to cover basic remoteproc usage: loading firmware from filesystem, starting and stopping the Cortex-r7 processor. Julien Massot (3): dt-bindings: remoteproc: Add Renesas R-Car arm64: dts: renesas: r8a77951: Add CR7 realtime processor remoteproc: Add Renesas rcar driver .../remoteproc/renesas,rcar-rproc.yaml | 66 +++++ arch/arm64/boot/dts/renesas/r8a77951-ulcb.dts | 15 ++ arch/arm64/boot/dts/renesas/r8a77951.dtsi | 7 + drivers/remoteproc/Kconfig | 12 + drivers/remoteproc/Makefile | 1 + drivers/remoteproc/rcar_rproc.c | 226 ++++++++++++++++++ 6 files changed, 327 insertions(+) create mode 100644 Documentation/devicetree/bindings/remoteproc/renesas,rcar-rproc.yaml create mode 100644 drivers/remoteproc/rcar_rproc.c