From mboxrd@z Thu Jan 1 00:00:00 1970 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-9.8 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_HELO_NONE,SPF_PASS,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id CD56AC432C0 for ; Tue, 3 Dec 2019 22:47:10 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id 942DD20803 for ; Tue, 3 Dec 2019 22:47:10 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575413230; bh=4ZcsvoMK3RPGa38JXaoPa51rrnxfLzp8nAkqbLym/nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=GBsbHW28ifltuw0aNfAhLVIWxP/wW0De1Vk2XiugXNcDoWQVhPqIJZc8NEf+hyxfV 6aAnRfTr0HwSlesCaImb2RdKc7jihqXIiSHHk+JJuTYp+3UdgtfXu0KwVuC8rbX7G/ C98p3o3o/fGs6UMrMYtK3Hi3R6ipfsU0qRxkHbjA= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1729011AbfLCWrJ (ORCPT ); Tue, 3 Dec 2019 17:47:09 -0500 Received: from mail.kernel.org ([198.145.29.99]:37108 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1728366AbfLCWrF (ORCPT ); Tue, 3 Dec 2019 17:47:05 -0500 Received: from localhost (83-86-89-107.cable.dynamic.v4.ziggo.nl [83.86.89.107]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id 9B7E820848; Tue, 3 Dec 2019 22:47:03 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575413224; bh=4ZcsvoMK3RPGa38JXaoPa51rrnxfLzp8nAkqbLym/nk=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1o5r/nwfVHoFLuzBVtLW5H3K3jCIk3Du4JRU8SjK00u3JiC1JteMv9hl/eiRqM1sH 6h5IRrVZ87gWdhLSkFCq2Df9XhBvgZOnD6QjzfXE7oD/NX2NFaKaY/Y443IFxhmM/2 jeETSKszlpCpxwHU6RXfmWVx3QSjj9L1taGXWcfw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, "Reported-by: Marian Mihailescu" , Marek Szyprowski , Sylwester Nawrocki , Sasha Levin Subject: [PATCH 4.19 009/321] clk: samsung: exynos5420: Preserve PLL configuration during suspend/resume Date: Tue, 3 Dec 2019 23:31:15 +0100 Message-Id: <20191203223427.605281159@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191203223427.103571230@linuxfoundation.org> References: <20191203223427.103571230@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Sender: linux-kernel-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Marek Szyprowski [ Upstream commit e9323b664ce29547d996195e8a6129a351c39108 ] Properly save and restore all top PLL related configuration registers during suspend/resume cycle. So far driver only handled EPLL and RPLL clocks, all other were reset to default values after suspend/resume cycle. This caused for example lower G3D (MALI Panfrost) performance after system resume, even if performance governor has been selected. Reported-by: Reported-by: Marian Mihailescu Fixes: 773424326b51 ("clk: samsung: exynos5420: add more registers to restore list") Signed-off-by: Marek Szyprowski Signed-off-by: Sylwester Nawrocki Signed-off-by: Sasha Levin --- drivers/clk/samsung/clk-exynos5420.c | 6 ++++++ 1 file changed, 6 insertions(+) diff --git a/drivers/clk/samsung/clk-exynos5420.c b/drivers/clk/samsung/clk-exynos5420.c index ce30862617a6e..d5af937212992 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -171,12 +171,18 @@ static const unsigned long exynos5x_clk_regs[] __initconst = { GATE_BUS_CPU, GATE_SCLK_CPU, CLKOUT_CMU_CPU, + CPLL_CON0, + DPLL_CON0, EPLL_CON0, EPLL_CON1, EPLL_CON2, RPLL_CON0, RPLL_CON1, RPLL_CON2, + IPLL_CON0, + SPLL_CON0, + VPLL_CON0, + MPLL_CON0, SRC_TOP0, SRC_TOP1, SRC_TOP2, -- 2.20.1