From patchwork Tue Jan 25 17:18:09 2022 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Daniel Lezcano X-Patchwork-Id: 537467 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 5FDA6C433EF for ; Tue, 25 Jan 2022 17:21:22 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1587621AbiAYRUt (ORCPT ); Tue, 25 Jan 2022 12:20:49 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:48780 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1587625AbiAYRSl (ORCPT ); Tue, 25 Jan 2022 12:18:41 -0500 Received: from mail-wm1-x32d.google.com (mail-wm1-x32d.google.com [IPv6:2a00:1450:4864:20::32d]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 0FD4DC0613E7 for ; Tue, 25 Jan 2022 09:18:40 -0800 (PST) Received: by mail-wm1-x32d.google.com with SMTP id l35-20020a05600c1d2300b0034d477271c1so2355222wms.3 for ; Tue, 25 Jan 2022 09:18:39 -0800 (PST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:in-reply-to:references :mime-version:content-transfer-encoding; bh=WvX/s8bbTEktU4nVsA2bYW4MFssxw4eAYf+UAFIZXJk=; b=aFEJkDCNwYf3UC4SHwZnnwU8qzZG3Oh8QnYPA/JKXnrv0rYkLvf3bzoymOYvF4vU70 SI2n+ibZVnfwIru9Gk7Zm0EUAiyFchvKt1E6nXMpSqcx4+bigMXKDfT3kdFW19+Np0p/ y28ICIzvDxjQ3R9MuxLDlgLLrbwVWY1d02jjnvsxKa8FLC7L+PdcEFTipUElG46Ij4gi +iCYApa2vfydHFRaAEjuQqoV0j+vT6nZb5is85rIby32x73+KsHtqRNKXRP8m8JGXPwv 0p6oslZg8mXf0PmVU4I7H1u3A1RiiEafYAnkgdFbi4LSKcUNu/EIXo0QoOEfvK8KHNAG D8IA== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20210112; h=x-gm-message-state:from:to:cc:subject:date:message-id:in-reply-to :references:mime-version:content-transfer-encoding; bh=WvX/s8bbTEktU4nVsA2bYW4MFssxw4eAYf+UAFIZXJk=; b=Euc5MzVx37YY9Sw5eWmMAC8fjzDE2h+9z2xYFdXE11AGwx8u5HM0vI/FwD9RTVXnOp N3HM9Y9qfZWFLou4Dfv1fpXwNIGJs6qvnYhtuJN1ECeUeDBncGHZ18StSdaWvEHAqL1g gCTKhM6+lcU38x64+kYtzQSctmEH3Psf0YliciQ6WJeuXS4L5k/ZFebDiyURuyqNxnyb pi2BfTd+l0PPUKwTEP9agl9yrbftdv9GQRywb1r5FEgn0h4UTRdIj32egUHS/qpKPhPq Lcn3B6DUvmt31vqE9w/J1usfuoFE1tBVn2FTT5+LW7Y6WR+PXq5aHU+mzeEWnOiQVGgY tc7w== X-Gm-Message-State: AOAM532WlSkMaGE33yPR9U72dJ9l3acQ/DW7wk4ZKuVmHjGokOEZQAh6 Mcb1dmvL3zsnbwszX537d0WvQjPjroK7ig== X-Google-Smtp-Source: ABdhPJwDB1k67p1xeoC/IyzRSlVdfgPPKVoaUXh0WUhoSf6YYRoGhugkBLidJ6Vcw6qWyAC3846+Yg== X-Received: by 2002:a7b:c923:: with SMTP id h3mr3915978wml.122.1643131118487; Tue, 25 Jan 2022 09:18:38 -0800 (PST) Received: from localhost.localdomain ([2a01:e34:ed2f:f020:f589:cf7d:b2ee:bb5e]) by smtp.gmail.com with ESMTPSA id t18sm17561901wri.34.2022.01.25.09.18.37 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 25 Jan 2022 09:18:37 -0800 (PST) From: Daniel Lezcano To: daniel.lezcano@linaro.org, rjw@rjwysocki.net Cc: robh@kernel.org, lukasz.luba@arm.com, heiko@sntech.de, arnd@linaro.org, linux-kernel@vger.kernel.org, linux-pm@vger.kernel.org, Geert Uytterhoeven , linux-arm-kernel@lists.infradead.org (moderated list:ARM/Rockchip SoC support), linux-rockchip@lists.infradead.org (open list:ARM/Rockchip SoC support) Subject: [PATCH v7 5/5] rockchip/soc/drivers: Add DTPM description for rk3399 Date: Tue, 25 Jan 2022 18:18:09 +0100 Message-Id: <20220125171809.1273269-6-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220125171809.1273269-1-daniel.lezcano@linaro.org> References: <20220125171809.1273269-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org The DTPM framework does support now the hierarchy description. The platform specific code can call the hierarchy creation function with an array of struct dtpm_node pointing to their parent. This patch provides a description of the big / Little CPUs and the GPU and tie them together under a virtual 'package' name. Only rk3399 is described now. The description could be extended in the future with the memory controller with devfreq. The description is always a module and it describes the soft dependencies. The userspace has to load the softdeps module in the right order. Signed-off-by: Daniel Lezcano --- drivers/soc/rockchip/Kconfig | 8 +++++ drivers/soc/rockchip/Makefile | 1 + drivers/soc/rockchip/dtpm.c | 59 +++++++++++++++++++++++++++++++++++ 3 files changed, 68 insertions(+) create mode 100644 drivers/soc/rockchip/dtpm.c diff --git a/drivers/soc/rockchip/Kconfig b/drivers/soc/rockchip/Kconfig index 25eb2c1e31bb..6dc017f02431 100644 --- a/drivers/soc/rockchip/Kconfig +++ b/drivers/soc/rockchip/Kconfig @@ -34,4 +34,12 @@ config ROCKCHIP_PM_DOMAINS If unsure, say N. +config ROCKCHIP_DTPM + tristate "Rockchip DTPM hierarchy" + depends on DTPM && DRM_PANFROST && m + help + Describe the hierarchy for the Dynamic Thermal Power + Management tree on this platform. That will create all the + power capping capable devices. + endif diff --git a/drivers/soc/rockchip/Makefile b/drivers/soc/rockchip/Makefile index 875032f7344e..05f31a4e743c 100644 --- a/drivers/soc/rockchip/Makefile +++ b/drivers/soc/rockchip/Makefile @@ -5,3 +5,4 @@ obj-$(CONFIG_ROCKCHIP_GRF) += grf.o obj-$(CONFIG_ROCKCHIP_IODOMAIN) += io-domain.o obj-$(CONFIG_ROCKCHIP_PM_DOMAINS) += pm_domains.o +obj-$(CONFIG_ROCKCHIP_DTPM) += dtpm.o diff --git a/drivers/soc/rockchip/dtpm.c b/drivers/soc/rockchip/dtpm.c new file mode 100644 index 000000000000..0b73a9cba954 --- /dev/null +++ b/drivers/soc/rockchip/dtpm.c @@ -0,0 +1,59 @@ +// SPDX-License-Identifier: GPL-2.0-only +/* + * Copyright 2021 Linaro Limited + * + * Author: Daniel Lezcano + * + * DTPM hierarchy description + */ +#include +#include +#include +#include + +static struct dtpm_node __initdata rk3399_hierarchy[] = { + [0]{ .name = "rk3399", + .type = DTPM_NODE_VIRTUAL }, + [1]{ .name = "package", + .type = DTPM_NODE_VIRTUAL, + .parent = &rk3399_hierarchy[0] }, + [2]{ .name = "/cpus/cpu@0", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [3]{ .name = "/cpus/cpu@1", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [4]{ .name = "/cpus/cpu@2", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [5]{ .name = "/cpus/cpu@3", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [6]{ .name = "/cpus/cpu@100", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [7]{ .name = "/cpus/cpu@101", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [8]{ .name = "/gpu@ff9a0000", + .type = DTPM_NODE_DT, + .parent = &rk3399_hierarchy[1] }, + [9]{ }, +}; + +static struct of_device_id __initdata rockchip_dtpm_match_table[] = { + { .compatible = "rockchip,rk3399", .data = rk3399_hierarchy }, + {}, +}; + +static int __init rockchip_dtpm_init(void) +{ + return dtpm_create_hierarchy(rockchip_dtpm_match_table); +} +module_init(rockchip_dtpm_init); + +MODULE_SOFTDEP("pre: panfrost cpufreq-dt"); +MODULE_DESCRIPTION("Rockchip DTPM driver"); +MODULE_LICENSE("GPL"); +MODULE_ALIAS("platform:dtpm"); +MODULE_AUTHOR("Daniel Lezcano