From patchwork Tue Sep 19 11:59:47 2023 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Stephan Gerhold X-Patchwork-Id: 13391288 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 81B9ECD54BE for ; Tue, 19 Sep 2023 12:00:02 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S230239AbjISMAG (ORCPT ); Tue, 19 Sep 2023 08:00:06 -0400 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:60224 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S229497AbjISMAF (ORCPT ); Tue, 19 Sep 2023 08:00:05 -0400 Received: from mx.kernkonzept.com (serv1.kernkonzept.com [IPv6:2a01:4f8:1c1c:b490::2]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 48EEDF2; Tue, 19 Sep 2023 04:59:58 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=kernkonzept.com; s=mx1; h=Cc:To:Content-Transfer-Encoding:Content-Type: MIME-Version:Message-Id:Date:Subject:From:References:In-Reply-To:Reply-To: Content-ID:Content-Description; bh=r3y4yFqUc5uIgQTTYbbXZv7CmCGCkwuSZZhi0rb2wK0=; b=pd76GLmVDxBF1mZweUcfDH4CSH DGa1R/y5nINulcIPDuIvhrDMrULp6ogSh8NLdqIMFP9J8AlsvFlHUJlDzfoqtLgCh+EbjO/MEjT9L L5/vVBWD50WxL+5s4lruIK1MVKtM5RlNxVJ7DlR34rbVak9dfIsWfiwHyq6TCwNjJFLsY8fpbA1tj E60nCsW4KeMSVnRwivOrdLR3RrGsr/7syzPmfbvSV+ofUfocJS/oPDdxsvBLg6F0mt/6ngrvpmFv9 MHiJR2RGhhRHWtHpvmTclUMIRWfrmE0dZ6L0NmbbDRSQXsjOjuZfJqW+b+XOrH0gNUSSMnVJTzOAc yE4QUqdQ==; Received: from [10.22.3.24] (helo=serv1.dd1.int.kernkonzept.com) by mx.kernkonzept.com with esmtpsa (TLS1.3:ECDHE_X25519__RSA_PSS_RSAE_SHA256__AES_256_GCM:256) (Exim 4.96) id 1qiZOT-004b4T-2k; Tue, 19 Sep 2023 13:59:53 +0200 From: Stephan Gerhold Subject: [PATCH v2 0/4] spi: qup: Allow scaling power domains and interconnect Date: Tue, 19 Sep 2023 13:59:47 +0200 Message-Id: <20230919-spi-qup-dvfs-v2-0-1bac2e9ab8db@kernkonzept.com> MIME-Version: 1.0 X-B4-Tracking: v=1; b=H4sIADONCWUC/3XMQQ6CMBCF4auQWTumLTGCK+9hWJQyyITYlhYbl fTuVvYu/5e8b4NIgSnCpdogUOLIzpZQhwrMpO2dkIfSoISqRSsVRs+4PD0OaYx4lqNp9ImE6SW Uiw808mvnbl3piePqwnvXk/ytf6AkUWBNdaO1aI3qh+tMwc7OfsivR+Me0OWcv/JTvQOuAAAA To: Mark Brown Cc: Andy Gross , Bjorn Andersson , Konrad Dybcio , Rob Herring , Krzysztof Kozlowski , Conor Dooley , linux-arm-msm@vger.kernel.org, linux-spi@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, Stephan Gerhold , Krzysztof Kozlowski X-Mailer: b4 0.12.3 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Make it possible to scale performance states of the power domain and interconnect of the SPI QUP controller in relation to the selected SPI speed / core clock. This is done separately by: - Parsing the OPP table from the device tree for performance state votes of the power domain - Voting for the necessary bandwidth on the interconnect path to DRAM Signed-off-by: Stephan Gerhold --- Changes in v2: - Vote for bandwidth only when DMA is used and not with PIO - Add review tags from Krzysztof and Konrad - Link to v1: https://lore.kernel.org/r/20230912-spi-qup-dvfs-v1-0-3e38aa09c2bd@kernkonzept.com --- Stephan Gerhold (4): spi: dt-bindings: qup: Document power-domains and OPP spi: qup: Parse OPP table for DVFS support spi: dt-bindings: qup: Document interconnects spi: qup: Vote for interconnect bandwidth to DRAM .../devicetree/bindings/spi/qcom,spi-qup.yaml | 13 ++++++ drivers/spi/spi-qup.c | 50 +++++++++++++++++++++- 2 files changed, 62 insertions(+), 1 deletion(-) --- base-commit: baaa2957b0c6feb4ff7806b5d8e0039bd80acbdf change-id: 20230912-spi-qup-dvfs-71fc8a5e0cb1 Best regards,