From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1755548AbcLBHSQ (ORCPT ); Fri, 2 Dec 2016 02:18:16 -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 S1750842AbcLBHSM (ORCPT ); Fri, 2 Dec 2016 02:18:12 -0500 X-AuditID: cbfee61a-f79916d0000062de-16-58412030e096 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, Michael Turquette , Stephen Boyd Subject: [PATCH 1/5] clk: samsung: exynos5433: Set NoC (Network On Chip) clocks as critical Date: Fri, 02 Dec 2016 16:18:03 +0900 Message-id: <1480663087-4590-2-git-send-email-cw00.choi@samsung.com> X-Mailer: git-send-email 1.8.0 In-reply-to: <1480663087-4590-1-git-send-email-cw00.choi@samsung.com> References: <1480663087-4590-1-git-send-email-cw00.choi@samsung.com> X-Brightmail-Tracker: H4sIAAAAAAAAA+NgFlrCIsWRmVeSWpSXmKPExsVy+t9jQV0DBccIg6PrpS2uf3nOajH/yDlW izdv1zBZ9D9+zWxx/vwGdouzTW/YLTY9vsZqcXnXHDaLGef3MVlcPOVqcbtxBZtF694j7BaH 37SzWvw4081isWrXH0YHfo/3N1rZPS739TJ57Jx1l91j06pONo/NS+o9tvQDeX1bVjF6fN4k F8AR5WaTkZqYklqkkJqXnJ+SmZduqxQa4qZroaSQl5ibaqsUoesbEqSkUJaYUwrkGRmgAQfn APdgJX27BLeM5gWvWQpeClVcvPeJqYHxP38XIyeHhICJxJZNb1kgbDGJC/fWs3UxcnEICcxi lGj+9pEdwvnBKDHx7EqwKjYBLYn9L26AVYkINDFKNFyYywjiMAusZpLYvO43WJWwQKxEY/c5 MJtFQFXi1K7VbCA2r4CLxPIDn9kg9slJfNjziB3E5hRwlWj4OosZxBYCqtnU1cE8gZF3ASPD KkaJ1ILkguKk9FzDvNRyveLE3OLSvHS95PzcTYzgGHomtYPx4C73Q4wCHIxKPLwvjB0ihFgT y4orcw8xSnAwK4nwfpZzjBDiTUmsrEotyo8vKs1JLT7EaAp02ERmKdHkfGB855XEG5qYm5gb G1iYW1qaGCmJ8zbOfhYuJJCeWJKanZpakFoE08fEwSnVwBgQHrHz/rZPUzcdZU7+eK759taN 584djS1xvxVk+/xf/fWWyHOXrxtyim7S6VK7Kif/9+6hY1xratP17lz9/Tfy18zp3L5r4g7G fL5tPS+05JjiLX0909zXZx42rPzxJOjTPPG4kilWTMZCO9eXVoV26bHqFsq99mo5syjk98OY P0vWneXe91pbiaU4I9FQi7moOBEAfSB5pLcCAAA= X-MTR: 20000000000000000@CPGS Sender: linux-kernel-owner@vger.kernel.org List-ID: X-Mailing-List: linux-kernel@vger.kernel.org The ACLK_BUS0/1/2 are used for NoC (Network on Chip). If NoC's clocks are disabled, the system halt happen. Following clock must be always enabled. - CLK_ACLK_BUS0_400 : NoC'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 Also, this patch adds the CLK_SET_RATE_PARENT flag to the CLK_SCLK_JPEG_MSCL because this clock should be used for bus frequency scaling. This clock need to be changed on the fly with CLK_SET_RATE_PARENT flag. Cc: Michael Turquette Cc: Stephen Boyd Cc:linux-clk@vger.kernel.org Signed-off-by: Chanwoo Choi --- drivers/clk/samsung/clk-exynos5433.c | 8 ++++---- 1 file changed, 4 insertions(+), 4 deletions(-) diff --git a/drivers/clk/samsung/clk-exynos5433.c b/drivers/clk/samsung/clk-exynos5433.c index f096bd7df40c..0db5204c307c 100644 --- a/drivers/clk/samsung/clk-exynos5433.c +++ b/drivers/clk/samsung/clk-exynos5433.c @@ -549,10 +549,10 @@ 29, CLK_IGNORE_UNUSED, 0), GATE(CLK_ACLK_BUS0_400, "aclk_bus0_400", "div_aclk_bus0_400", ENABLE_ACLK_TOP, 26, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_BUS1_400, "aclk_bus1_400", "div_aclk_bus1_400", ENABLE_ACLK_TOP, 25, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_IMEM_200, "aclk_imem_200", "div_aclk_imem_266", ENABLE_ACLK_TOP, 24, CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), @@ -616,7 +616,7 @@ /* ENABLE_SCLK_TOP_MSCL */ GATE(CLK_SCLK_JPEG_MSCL, "sclk_jpeg_mscl", "div_sclk_jpeg", - ENABLE_SCLK_TOP_MSCL, 0, 0, 0), + ENABLE_SCLK_TOP_MSCL, 0, CLK_SET_RATE_PARENT, 0), /* ENABLE_SCLK_TOP_CAM1 */ GATE(CLK_SCLK_ISP_SENSOR2, "sclk_isp_sensor2", "div_sclk_isp_sensor2_b", @@ -1382,7 +1382,7 @@ static void __init exynos5433_cmu_cpif_init(struct device_node *np) /* ENABLE_ACLK_MIF3 */ GATE(CLK_ACLK_BUS2_400, "aclk_bus2_400", "div_aclk_bus2_400", ENABLE_ACLK_MIF3, 4, - CLK_IGNORE_UNUSED | CLK_SET_RATE_PARENT, 0), + CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), GATE(CLK_ACLK_DISP_333, "aclk_disp_333", "div_aclk_disp_333", ENABLE_ACLK_MIF3, 1, CLK_IS_CRITICAL | CLK_SET_RATE_PARENT, 0), -- 1.9.1