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dkim=none (message not signed) header.d=none;sifive.com; dmarc=none action=none header.from=sifive.com; Received: from BN6PR1301MB2020.namprd13.prod.outlook.com (2603:10b6:405:34::34) by BN6PR13MB1409.namprd13.prod.outlook.com (2603:10b6:404:111::14) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.20.3109.13; Tue, 16 Jun 2020 12:01:29 +0000 Received: from BN6PR1301MB2020.namprd13.prod.outlook.com ([fe80::68f2:768a:7a8b:e790]) by BN6PR1301MB2020.namprd13.prod.outlook.com ([fe80::68f2:768a:7a8b:e790%7]) with mapi id 15.20.3109.018; Tue, 16 Jun 2020 12:01:29 +0000 From: Yash Shah To: paul.walmsley@sifive.com, palmer@dabbelt.com, robh+dt@kernel.org, linux-riscv@lists.infradead.org, linux-kernel@vger.kernel.org, devicetree@vger.kernel.org, sachin.ghadi@sifive.com Subject: [PATCH 1/3] riscv: defconfig, Kconfig: enable CPU power management Date: Tue, 16 Jun 2020 17:31:02 +0530 Message-Id: <1592308864-30205-2-git-send-email-yash.shah@sifive.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1592308864-30205-1-git-send-email-yash.shah@sifive.com> References: <1592308864-30205-1-git-send-email-yash.shah@sifive.com> X-ClientProxiedBy: SG2PR02CA0019.apcprd02.prod.outlook.com (2603:1096:3:17::31) To BN6PR1301MB2020.namprd13.prod.outlook.com (2603:10b6:405:34::34) MIME-Version: 1.0 X-MS-Exchange-MessageSentRepresentingType: 1 Received: from osubuntu003.open-silicon.com (159.117.144.156) by SG2PR02CA0019.apcprd02.prod.outlook.com (2603:1096:3:17::31) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_CBC_SHA256) id 15.20.3088.25 via Frontend Transport; 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X-Spam-Score: -0.2 (/) X-Spam-Report: SpamAssassin version 3.4.4 on bombadil.infradead.org summary: Content analysis details: (-0.2 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.0 RCVD_IN_DNSWL_NONE RBL: Sender listed at https://www.dnswl.org/, no trust [40.107.220.46 listed in list.dnswl.org] -0.0 SPF_HELO_PASS SPF: HELO matches SPF record -0.0 SPF_PASS SPF: sender matches SPF record -0.1 DKIM_VALID_EF Message has a valid DKIM or DK signature from envelope-from domain -0.1 DKIM_VALID_AU Message has a valid DKIM or DK signature from author's domain 0.1 DKIM_SIGNED Message has a DKIM or DK signature, not necessarily valid -0.1 DKIM_VALID Message has at least one valid DKIM or DK signature -0.0 RCVD_IN_MSPIKE_H2 RBL: Average reputation (+2) [40.107.220.46 listed in wl.mailspike.net] 0.0 MSGID_FROM_MTA_HEADER Message-Id was added by a relay X-BeenThere: linux-riscv@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: aou@eecs.berkeley.edu, anup@brainfault.org, lollivier@baylibre.com, green.wan@sifive.com, atish.patra@wdc.com, Yash Shah , alistair.francis@wdc.com, deepa.kernel@gmail.com, bmeng.cn@gmail.com Sender: "linux-riscv" Errors-To: linux-riscv-bounces+patchwork-linux-riscv=patchwork.kernel.org@lists.infradead.org Enable CPUFreq and CPUIdle for RISC-V systems to be configured with Kconfig, and compile the kernel code to support it by default. This will be used to support dynamic CPU frequency switching for the HiFive Unleashed board, along with any future RISC-V boards that support CPU power management. Signed-off-by: Yash Shah --- arch/riscv/Kconfig | 8 ++++++++ arch/riscv/configs/defconfig | 5 +++++ 2 files changed, 13 insertions(+) diff --git a/arch/riscv/Kconfig b/arch/riscv/Kconfig index a31e1a4..1c8443e 100644 --- a/arch/riscv/Kconfig +++ b/arch/riscv/Kconfig @@ -381,6 +381,14 @@ endchoice endmenu +menu "CPU Power Management" + +source "drivers/cpuidle/Kconfig" + +source "drivers/cpufreq/Kconfig" + +endmenu + menu "Power management options" source "kernel/power/Kconfig" diff --git a/arch/riscv/configs/defconfig b/arch/riscv/configs/defconfig index 4da4886..58f4bce 100644 --- a/arch/riscv/configs/defconfig +++ b/arch/riscv/configs/defconfig @@ -17,6 +17,11 @@ CONFIG_BPF_SYSCALL=y CONFIG_SOC_SIFIVE=y CONFIG_SOC_VIRT=y CONFIG_SMP=y +CONFIG_CPU_IDLE=y +CONFIG_CPU_FREQ=y +CONFIG_CPU_FREQ_STAT=y +CONFIG_CPU_FREQ_DEFAULT_GOV_USERSPACE=y +CONFIG_CPUFREQ_DT=y CONFIG_MODULES=y CONFIG_MODULE_UNLOAD=y CONFIG_NET=y