From patchwork Mon Jul 30 08:11:16 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Enric Balletbo i Serra X-Patchwork-Id: 10548695 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id EB89D13BB for ; Mon, 30 Jul 2018 08:12:48 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id DFDCC286DE for ; Mon, 30 Jul 2018 08:12:48 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id D2D0828720; Mon, 30 Jul 2018 08:12:48 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI,UNPARSEABLE_RELAY autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 76FDF286DE for ; Mon, 30 Jul 2018 08:12:48 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726543AbeG3Jp3 (ORCPT ); Mon, 30 Jul 2018 05:45:29 -0400 Received: from bhuna.collabora.co.uk ([46.235.227.227]:55872 "EHLO bhuna.collabora.co.uk" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1726344AbeG3Jp3 (ORCPT ); Mon, 30 Jul 2018 05:45:29 -0400 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: eballetbo) with ESMTPSA id 2F7EF263C00 From: Enric Balletbo i Serra To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Rob Herring , Will Deacon , Heiko Stuebner , Michael Turquette , Stephen Boyd , Sandy Huang , David Airlie Cc: linux-pm@vger.kernel.org, linux-kernel@vger.kernel.org, Derek Basehore , linux-clk@vger.kernel.org, linux-rockchip@lists.infradead.org, dri-devel@lists.freedesktop.org, Lin Huang , kernel@collabora.com, robin.murphy@arm.com, Sean Paul , linux-arm-kernel@lists.infradead.org, Catalin Marinas , Mark Yao , Jacob Chen , Brian Norris , Douglas Anderson , Jeffy Chen , Nickey Yang , devicetree@vger.kernel.org, Klaus Goger , Randy Li , Chris Zhong , Shunqian Zheng , Mark Rutland Subject: [PATCH 0/8] Add support for drm/rockchip to dynamically control the DDR frequency. Date: Mon, 30 Jul 2018 10:11:16 +0200 Message-Id: <20180730081124.30698-1-enric.balletbo@collabora.com> X-Mailer: git-send-email 2.18.0 Sender: linux-pm-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-pm@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Dear all, The rk3399 platform has a DFI controller that can monitor DDR load and a DMC driver that talks with the TF-A (Trusted Firmware-A) to dynamically set the DDR frequency with following flow. kernel Trusted Firmware-A (bl31) monitor ddr load | | get_target_rate | | pass rate to TF-A clk_set_rate(ddr) --------------------->run ddr dvs flow | | <------------------------------end ddr dvs flow | | return These patches add support for devfreq to dynamically control the DDR frequency into the drm rockchip driver. By default it uses the 'simple_ondemand' governor which can adjust the frequency based on the DDR load. Waiting for your feedback. Best regards, Enric Changes in v1: - [RFC 1/10] Add Acked-by: Chanwoo Choi - [RFC 1/10] s/Generic/General/ (Robin Murphy) - [RFC 2/10] Add reviewed and acked tags from Chanwoo Choi and Rob Herring - [RFC 3/10] Add an explanation for platform SIP calls. - [RFC 3/10] Change if statement for a switch. - [RFC 3/10] Rename ddr_flag to odt_enable to be more clear. - [RFC 4/10] Removed from the series. I did not found a use case where not holding the mutex causes the issue. - [RFC 7/10] Removed from the series. I did not found a use case where this matters. - [RFC 8/10] Move rk3399-dram.h to dt-includes. - [RFC 8/10] Put sdram default values under the dmc node. - [RFC 8/10] Removed rk3399-dram-default-timing.dts Derek Basehore (2): devfreq: rk3399_dmc / clk: rockchip: Sync with vblank in the kernel for DDRfreq. devfreq: rk3399_dmc / clk: rockchip: Disable DDR clk timeout on suspend. Enric Balletbo i Serra (3): devfreq: rockchip-dfi: Move GRF definitions to a common place. dt-bindings: devfreq: rk3399_dmc: Add rockchip,pmu phandle. devfreq: rk3399_dmc: Pass ODT and auto power down parameters to TF-A. Lin Huang (2): arm64: dts: rk3399: Add dfi and dmc nodes. arm64: dts: rockchip: Enable dmc and dfi nodes on gru. Sean Paul (1): drm: rockchip: Add DDR devfreq support. .../bindings/devfreq/rk3399_dmc.txt | 2 + arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 21 ++ .../boot/dts/rockchip/rk3399-op1-opp.dtsi | 29 +++ arch/arm64/boot/dts/rockchip/rk3399.dtsi | 51 ++++- drivers/clk/rockchip/clk-ddr.c | 157 +++++++++++-- drivers/clk/rockchip/clk.c | 2 +- drivers/clk/rockchip/clk.h | 3 +- drivers/devfreq/event/rockchip-dfi.c | 23 +- drivers/devfreq/rk3399_dmc.c | 209 +++++++++++++++--- drivers/devfreq/rk3399_dmc_priv.h | 16 ++ drivers/gpu/drm/rockchip/rockchip_drm_drv.c | 46 ++++ drivers/gpu/drm/rockchip/rockchip_drm_drv.h | 9 + drivers/gpu/drm/rockchip/rockchip_drm_fb.c | 35 +++ drivers/gpu/drm/rockchip/rockchip_drm_vop.c | 34 +++ include/dt-bindings/power/rk3399-dram.h | 73 ++++++ include/soc/rockchip/rk3399_dmc.h | 42 ++++ include/soc/rockchip/rk3399_grf.h | 21 ++ include/soc/rockchip/rockchip_sip.h | 1 + 18 files changed, 704 insertions(+), 70 deletions(-) create mode 100644 drivers/devfreq/rk3399_dmc_priv.h create mode 100644 include/dt-bindings/power/rk3399-dram.h create mode 100644 include/soc/rockchip/rk3399_dmc.h create mode 100644 include/soc/rockchip/rk3399_grf.h