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Wed, 19 Jan 2022 00:58:14 -0800 (PST) Received: from localhost.localdomain ([2a01:e34:ed2f:f020:ef34:de48:dc4e:ad87]) by smtp.gmail.com with ESMTPSA id 10sm4491454wmc.44.2022.01.19.00.58.11 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Wed, 19 Jan 2022 00:58:13 -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 v6 5/5] rockchip/soc/drivers: Add DTPM description for rk3399 Date: Wed, 19 Jan 2022 09:57:19 +0100 Message-Id: <20220119085719.1357874-6-daniel.lezcano@linaro.org> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20220119085719.1357874-1-daniel.lezcano@linaro.org> References: <20220119085719.1357874-1-daniel.lezcano@linaro.org> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20220119_005816_587876_DE9DE1EF X-CRM114-Status: GOOD ( 19.29 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.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