From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752748AbcLBHSM (ORCPT ); Fri, 2 Dec 2016 02:18:12 -0500 Received: from mailout2.samsung.com ([203.254.224.25]:34278 "EHLO mailout2.samsung.com" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750750AbcLBHSK (ORCPT ); Fri, 2 Dec 2016 02:18:10 -0500 X-AuditID: cbfee61a-f79916d0000062de-15-58412030daac From: Chanwoo Choi To: krzk@kernel.org, javier@osg.samsung.com, kgene@kernel.org, robh+dt@kernel.org, s.nawrocki@samsung.com, tomasz.figa@gmail.com Cc: cw00.choi@samsung.com, myungjoo.ham@samsung.com, kyungmin.park@samsung.com, devicetree@vger.kernel.org, linux-samsung-soc@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 0/5] arm64: dts: Enable bus frequency scaling on Exynos5433-based TM2 board Date: Fri, 02 Dec 2016 16:18:02 +0900 Message-id: <1480663087-4590-1-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.0 X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFvrOLMWRmVeSWpSXmKPExsVy+t9jQV0DBccIg5udIhbXvzxntZh/5Byr xZu3a5gs+h+/ZrY4f34Du8XZpjfsFpseX2O1uLxrDpvFjPP7mCxuN65gs2jde4Td4vCbdlaL Vbv+MDrweuycdZfdY9OqTjaPzUvqPbb0A3l9W1YxenzeJBfAFuVmk5GamJJapJCal5yfkpmX bqsUGuKma6GkkJeYm2qrFKHrGxKkpFCWmFMK5BkZoAEH5wD3YCV9uwS3jBnXG1kL3ghVbDh6 gamB8Q5vFyMHh4SAicTTVUldjJxAppjEhXvr2boYuTiEBGYxShz8s4cVwvnBKDHx7EoWkCo2 AS2J/S9ugFWJCDQxSjRcmMsI4jALXGWU2Lh4CiNIlbBArMS8j0eZQGwWAVWJFafbmUHW8Qq4 SJzbqwSxTk7iw55H7BMYuRcwMqxilEgtSC4oTkrPNcxLLdcrTswtLs1L10vOz93ECA70Z1I7 GA/ucj/EKMDBqMTD+8LYIUKINbGsuDL3EKMEB7OSCO9nOccIId6UxMqq1KL8+KLSnNTiQ4ym QPsnMkuJJucDozCvJN7QxNzE3NjAwtzS0sRISZy3cfazcCGB9MSS1OzU1ILUIpg+Jg5OqQZG 7a7U0MuiT5tPGp9L9pywaN40z///o+dzsM3qq9u/5cR7DVnntgrRRSU7vdxFO58K+Iger1mQ VjSHy+XiWsHn9/fPWlt8zLZCeke7VoyP+ZUDLBF5b8K2iHfuqDbM3xm27qnhxmrxJysd3Ldt rnftVxV79cfM4UbypwOdmfXPZbVO3f39+pGeEktxRqKhFnNRcSIApnqqWIoCAAA= X-MTR: 20000000000000000@CPGS Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org This patches add the AMBA bus Device-tree node unsing VDD_INT to enable the bus frequency scaling on Exynos5433-based TM2 board. There are two kind of bus device with devfreq framework. - Parent bus device : Change the frequency/voltage according to bus's utilization. - Passive bus device : Change only frequency according to the new level of parent bus device. The VDD_INT regulator provides the power source to INT (Internal) block as following. The sub-blocks in the INT block share the one power source. VDD_INT |--- G2D (parent device) |--- MSCL |--- GSCL |--- JPEG |--- MFC |--- HEVC |--- BUS0 |--- BUS1 |--- BUS2 |--- PERIS (Fixed clock rate) |--- PERIC (Fixed clock rate) |--- FSYS (Fixed clock rate) Each sub-block has the bus clock as following: - CLK_ACLK_G2D_{400|266} : Bus clock for G2D - CLK_ACLK_MSCL_400 : Bus clock for MSCL (Mobile Scaler) - CLK_ACLK_GSCL_333 : Bus clock for GSCL (General Scaler) - CLK_SCLK_JPEG_MSCL : Bus clock for JPEG - CLK_ACLK_MFC_400 : Bus clock for MFC (Multi Format Codec) - CLK_ACLK_HEVC_400 : Bus clock for HEVC (High Effective Video Codec) - CLK_ACLK_BUS0_400 : NoC(Network On Chip)'s bus clock for PERIC/PERIS/FSYS/MSCL - CLK_ACLK_BUS1_400 : NoC's bus clock for MFC/HEVC/G3D - CLK_ACLK_BUS2_400 : NoC's bus clock for GSCL/DISP/G2D/CAM0/CAM1/ISP Chanwoo Choi (5): clk: samsung: exynos5433: Set NoC (Network On Chip) clocks as critical PM / devfreq: exynos-bus: Add the detailed correlation for Exynos5433 arm64: dts: exynos5433: Add PPMU dt node arm64: dts: exynos5433: Add bus dt node using VDD_INT for Exynos5433 arm64: dts: exynos5433: Add support of bus frequency using VDD_INT on TM2 .../devicetree/bindings/devfreq/exynos-bus.txt | 14 ++ arch/arm64/boot/dts/exynos/exynos5433-bus.dtsi | 208 +++++++++++++++++++++ arch/arm64/boot/dts/exynos/exynos5433-tm2.dts | 72 +++++++ arch/arm64/boot/dts/exynos/exynos5433.dtsi | 25 +++ drivers/clk/samsung/clk-exynos5433.c | 8 +- 5 files changed, 323 insertions(+), 4 deletions(-) create mode 100644 arch/arm64/boot/dts/exynos/exynos5433-bus.dtsi -- 1.9.1