From patchwork Tue Sep 14 15:56:01 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Sam Protsenko X-Patchwork-Id: 511076 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-13.8 required=3.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID, DKIM_VALID_AU, HEADER_FROM_DIFFERENT_DOMAINS, INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=unavailable autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 30B65C4332F for ; Tue, 14 Sep 2021 15:56:12 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 16DC561247 for ; Tue, 14 Sep 2021 15:56:12 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S232800AbhINP52 (ORCPT ); Tue, 14 Sep 2021 11:57:28 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:58876 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S232983AbhINP52 (ORCPT ); Tue, 14 Sep 2021 11:57:28 -0400 Received: from mail-lf1-x135.google.com (mail-lf1-x135.google.com [IPv6:2a00:1450:4864:20::135]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 54CF5C061766 for ; Tue, 14 Sep 2021 08:56:10 -0700 (PDT) Received: by mail-lf1-x135.google.com with SMTP id k13so29849639lfv.2 for ; Tue, 14 Sep 2021 08:56:10 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=linaro.org; s=google; h=from:to:cc:subject:date:message-id:mime-version :content-transfer-encoding; bh=D9r7vZTFmt+HJczJ26/VRGmSIRdn9r2Ig6CHBFrDqyQ=; b=WGEzzSuuYjdTtafp7Eu81tLCmpgrr+gXYtUri5DNqI5NCgL24GFjf73a/e2jyLt9mG odsKhpJeEdR3FB9k9Ien6pDJYoUHRHuid0YNZ7TbOAJHb8OyBtWer7iWwSW1u14BXOTW +YgaPZ7iP6bLgkmX18uF8UKm4iFPdCtC9yRbpl7jVdskqTbpu7KwRYteuWz8ZFnqgxxD AfUt/CUakcI47R7HCq1Pt53OXxONCeJvCnNSqyqa5DLS2EJx9dyrtL6MmKj8Qeogi/2k W2fxnWN2DrZhVF2sMisO5VmdDX4hiiHjtj7uYz6E7yZ96NmYUpdC25W3LF6dushrEzbY GW9g== 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:mime-version :content-transfer-encoding; bh=D9r7vZTFmt+HJczJ26/VRGmSIRdn9r2Ig6CHBFrDqyQ=; b=i3EbeB+snGZXEAPgWBr1nVPToItTr8J+tQ1n/kvJbBOoaTX7EPCPNp6k3K0s9JHFo8 BSaJcea1WGAUspEwi5qDdrmWisTx3rjhQEDRADSYMTQ2xQUORqrac6QJN0suCo+P8JIu pvAbOpmTqZ3EW97CTG+EldAzZVVrbwKOnw6zlv65uFK6sO/tFdh8xPQcA39Nm+2By7Dy pDji11na0bPH1xXcUP5AcL/5ZGUZjnIZzBrSljMgCgkPIP/VuEhJ9zwhQWvi+fjnu13k ZEzM1RihBWbUpeJ2BpYhuuvDNDSDEvQj7hMXWwHk1BXUFwyptCcUkO4/SfyrCauL2O34 eIhw== X-Gm-Message-State: AOAM530ooaixHcb970CpH+n86A8wBF5xXi4Uw8KNSbbsaJWnV6ZmpTRc hDfcG4f2BTHM2F1tvnsBjl57Mw== X-Google-Smtp-Source: ABdhPJxyinnxHmfXKBVGde0Dv5bF8T5/S0h3LFk8Is4k0D1dXCGfavlZhTNu/0Ze4Zz34a+lhodbWQ== X-Received: by 2002:ac2:5b07:: with SMTP id v7mr586587lfn.113.1631634968690; Tue, 14 Sep 2021 08:56:08 -0700 (PDT) Received: from localhost ([31.134.121.151]) by smtp.gmail.com with ESMTPSA id 26sm603801lfz.40.2021.09.14.08.56.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 14 Sep 2021 08:56:08 -0700 (PDT) From: Sam Protsenko To: Krzysztof Kozlowski , Sylwester Nawrocki , =?utf-8?q?Pawe=C5=82_Chmiel?= , Chanwoo Choi , Tomasz Figa , Rob Herring , Stephen Boyd , Michael Turquette Cc: Ryu Euiyoul , Tom Gall , Sumit Semwal , John Stultz , Amit Pundir , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-samsung-soc@vger.kernel.org Subject: [PATCH 0/6] clk: samsung: Introduce Exynos850 SoC clock driver Date: Tue, 14 Sep 2021 18:56:01 +0300 Message-Id: <20210914155607.14122-1-semen.protsenko@linaro.org> X-Mailer: git-send-email 2.30.2 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org This patch series provides the implementation for Exynos850 clock driver, its documentation and corresponding changes for Samsung clock infrastructure: - Adds new PLL types used in Exynos850 SoC, following TRM - Enables bus clock for each registered CMU, if it's provided I tried to follow already established design for Samsung clock drivers (getting most insights from Exynos7 and Exynos5433 clock drivers), and integrate the driver in existing infrastructure. The whole driver was implemented from scratch, using mostly TRM. For now only basic clocks are implemented, including next blocks: - CMU_TOP - CMU_PERI - CMU_CORE - CMU_HSI Some CMUs are still not implemented, but that can be added in future, when the need arises. The driver also lacks CLKOUT support, PM ops and automatic clocks control (using Q-Channel protocol). All that can be added independently later. Implemented clock tree was tested via UART and MMC drivers, and using DebugFS clk support (e.g. using 'clk_summary' file). In order to keep all clocks running I added 'clk_ignore_unused' kernel param in my local tree, and defined CLOCK_ALLOW_WRITE_DEBUGFS in clk.c for actually testing clocks via DebugFS. Sam Protsenko (6): clk: samsung: Enable bus clock on init clk: samsung: clk-pll: Implement pll0822x PLL type clk: samsung: clk-pll: Implement pll0831x PLL type dt-bindings: clock: Add bindings definitions for Exynos850 CMU dt-bindings: clock: Document Exynos850 CMU bindings clk: samsung: Introduce Exynos850 clock driver .../clock/samsung,exynos850-clock.yaml | 190 +++++ drivers/clk/samsung/Makefile | 1 + drivers/clk/samsung/clk-exynos850.c | 700 ++++++++++++++++++ drivers/clk/samsung/clk-pll.c | 196 +++++ drivers/clk/samsung/clk-pll.h | 2 + drivers/clk/samsung/clk.c | 13 + include/dt-bindings/clock/exynos850.h | 72 ++ 7 files changed, 1174 insertions(+) create mode 100644 Documentation/devicetree/bindings/clock/samsung,exynos850-clock.yaml create mode 100644 drivers/clk/samsung/clk-exynos850.c create mode 100644 include/dt-bindings/clock/exynos850.h Reviewed-by: Krzysztof Kozlowski Acked-by: Chanwoo Choi Acked-by: Chanwoo Choi