From patchwork Tue Mar 19 18:13:18 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-Patchwork-Submitter: =?utf-8?q?Ga=C3=ABl_PORTAY?= X-Patchwork-Id: 10860183 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 7910613B5 for ; Tue, 19 Mar 2019 18:13:57 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 5CEFE29185 for ; Tue, 19 Mar 2019 18:13:57 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id 50B6129829; Tue, 19 Mar 2019 18:13:57 +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=-5.2 required=2.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,MAILING_LIST_MULTI,RCVD_IN_DNSWL_MED,UNPARSEABLE_RELAY autolearn=ham version=3.3.1 Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.wl.linuxfoundation.org (Postfix) with ESMTPS id E709829185 for ; Tue, 19 Mar 2019 18:13:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:Message-Id:Date:Subject:To :From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:In-Reply-To:References: List-Owner; bh=Mu9JAibiHz5AGqQBL/u5fTormJ9rnC0zQmG/T7h7pM0=; b=l8ZldwyokIFEdV VVAlsp5zNRaTlhCiJcBQ8oEv5qmkE/cEfUP1OaowEQAUv9cAJUR1dd8vfvxeqkc1G0wHEb8XHcC9M ACZpxIA2BNM5b27utCvfiCH6E9yMyQqgsoVt7SzRLWkLK8uMMa+FSuXGwpFUf1WhzxlE/y+1bp1iX 7TqleCMgL+9NBqU2IiVLdaYiqCIFLb2UUX2+ZPBU/fTOe0YzQkVeGix1R27qdp9Npw54R01crWTcs /a+vdWkQUpfT0/eSSIDIjk0rHJxr4t8D7zIGbyMZU80ww8qk3BfYztn8RlAqsX0rU9DXy+vyShnyb XFnKxZFY8O+xLk2M5T4w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6JFL-0005yD-1S; Tue, 19 Mar 2019 18:13:55 +0000 Received: from bhuna.collabora.co.uk ([46.235.227.227]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h6JF6-0005kS-Bq; Tue, 19 Mar 2019 18:13:42 +0000 Received: from [127.0.0.1] (localhost [127.0.0.1]) (Authenticated sender: gportay) with ESMTPSA id 6C93A281416 From: =?utf-8?q?Ga=C3=ABl_PORTAY?= To: MyungJoo Ham , Kyungmin Park , Chanwoo Choi , Rob Herring , Heiko Stuebner , Enric Balletbo i Serra , Lin Huang , Brian Norris , Douglas Anderson , Klaus Goger , Derek Basehore , Randy Li , linux-pm@vger.kernel.org, devicetree@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org Subject: [PATCH v2 0/5] Add support for drm/rockchip to dynamically control the DDR frequency. Date: Tue, 19 Mar 2019 14:13:18 -0400 Message-Id: <20190319181323.22804-1-gael.portay@collabora.com> X-Mailer: git-send-email 2.21.0 MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190319_111340_670737_B3A75C9C X-CRM114-Status: GOOD ( 13.95 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Mark Rutland , kernel@collabora.com Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.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, Gaël Changes in v2: - [PATCH 1/8] Really add Acked-by: Chanwoo Choi . - [PATCH 4/8] Removed from patchset. - [PATCH 5/8] Removed from patchset. - [PATCH 6/8] Removed from patchset. - [PATCH 7/8] Reword the commit message to reflect the removal of rk3390-dram-default-timing.dts in v1. - [PATCH 8/8] Move center-supply attribute of dmc node in file rk3399-gru-chromebook.dtsi (where ppvar_centerlogic is defined). 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 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. .../bindings/devfreq/rk3399_dmc.txt | 2 + .../dts/rockchip/rk3399-gru-chromebook.dtsi | 4 + arch/arm64/boot/dts/rockchip/rk3399-gru.dtsi | 20 +++++ .../boot/dts/rockchip/rk3399-op1-opp.dtsi | 29 ++++++++ arch/arm64/boot/dts/rockchip/rk3399.dtsi | 51 ++++++++++++- drivers/devfreq/event/rockchip-dfi.c | 23 ++---- drivers/devfreq/rk3399_dmc.c | 74 ++++++++++++++++++- include/dt-bindings/power/rk3399-dram.h | 73 ++++++++++++++++++ include/soc/rockchip/rk3399_grf.h | 21 ++++++ include/soc/rockchip/rockchip_sip.h | 1 + 10 files changed, 280 insertions(+), 18 deletions(-) create mode 100644 include/dt-bindings/power/rk3399-dram.h create mode 100644 include/soc/rockchip/rk3399_grf.h