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[2620:137:e000::1:20]) by mx.google.com with ESMTP id jt20-20020a170906ca1400b006df76385f1fsi10265777ejb.959.2022.03.22.13.21.43; Tue, 22 Mar 2022 13:22:08 -0700 (PDT) Received-SPF: pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) client-ip=2620:137:e000::1:20; Authentication-Results: mx.google.com; spf=pass (google.com: domain of linux-kernel-owner@vger.kernel.org designates 2620:137:e000::1:20 as permitted sender) smtp.mailfrom=linux-kernel-owner@vger.kernel.org; dmarc=fail (p=NONE sp=NONE dis=NONE) header.from=arm.com Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232583AbiCVK6i (ORCPT + 99 others); Tue, 22 Mar 2022 06:58:38 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:34128 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S233931AbiCVK62 (ORCPT ); Tue, 22 Mar 2022 06:58:28 -0400 Received: from foss.arm.com (foss.arm.com [217.140.110.172]) by lindbergh.monkeyblade.net (Postfix) with ESMTP id 6088C68FB5; Tue, 22 Mar 2022 03:56:59 -0700 (PDT) Received: from usa-sjc-imap-foss1.foss.arm.com (unknown [10.121.207.14]) by usa-sjc-mx-foss1.foss.arm.com (Postfix) with ESMTP id 24E87106F; Tue, 22 Mar 2022 03:56:59 -0700 (PDT) Received: from bogus (e103737-lin.cambridge.arm.com [10.1.197.49]) by usa-sjc-imap-foss1.foss.arm.com (Postfix) with ESMTPSA id 496013F66F; Tue, 22 Mar 2022 03:56:57 -0700 (PDT) Date: Tue, 22 Mar 2022 10:56:54 +0000 From: Sudeep Holla To: Qin Jian Cc: krzysztof.kozlowski@canonical.com, robh+dt@kernel.org, mturquette@baylibre.com, sboyd@kernel.org, tglx@linutronix.de, maz@kernel.org, p.zabel@pengutronix.de, linux@armlinux.org.uk, arnd@arndb.de, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Sudeep Holla , linux-clk@vger.kernel.org Subject: Re: [PATCH v11 0/9] Add Sunplus SP7021 SoC Support Message-ID: References: MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: X-Spam-Status: No, score=-6.9 required=5.0 tests=BAYES_00,RCVD_IN_DNSWL_HI, SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE autolearn=ham autolearn_force=no version=3.4.6 X-Spam-Checker-Version: SpamAssassin 3.4.6 (2021-04-09) on lindbergh.monkeyblade.net Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org On Tue, Mar 22, 2022 at 02:16:51PM +0800, Qin Jian wrote: > This patch series add Sunplus SP7021 SoC support. > > Sunplus SP7021 is an ARM Cortex A7 (4 cores) based SoC. It integrates many > peripherals (ex: UART, I2C, SPI, SDIO, eMMC, USB, SD card and etc.) into a > single chip. It is designed for industrial control. > > SP7021 consists of two chips (dies) in a package. One is called C-chip > (computing chip). It is a 4-core ARM Cortex A7 CPU. It adopts high-level > process (22 nm) for high performance computing. The other is called P- > chip (peripheral chip). It has many peripherals and an ARM A926 added > especially for real-time control. P-chip is made for customers. It adopts > low-level process (ex: 0.11 um) to reduce cost. Not related to this series, but to the platform in general. You still need to resolved the boot/cpu-method for this platform before you add support for all the 4 cpus on this platform. I remember discussing about CPUIdle on a separate thread. I thought this is best thread to remind that so that it is addressed before we see either cpuidle or cpuhotplug support on this platform. -- Regards, Sudeep