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 3C0AEC432C0 for ; Tue, 3 Dec 2019 22:39:57 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.kernel.org (Postfix) with ESMTP id EE27320684 for ; Tue, 3 Dec 2019 22:39:56 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575412797; bh=6xyK8o/gOgI9IfBK/zYzjcmDxtLo1/v0Rv2IftUjTrg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:List-ID:From; b=pCc1jl/hvi/pCNiC1YmffTqyjBkHraaKCf9W1B7LkL7scEDJkVK+39KEKDcV2RAHc QNON4EGu+WSU18bEee6Wi60WiYFqd6POh4fCzH+/b7wPi3lpyJiP+OPpE8+5MBln5z jWy5/rG3Nd82sBvNva9HTzzRhiisXDFzzo36dIPI= Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727741AbfLCWjz (ORCPT ); Tue, 3 Dec 2019 17:39:55 -0500 Received: from mail.kernel.org ([198.145.29.99]:50876 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727963AbfLCWjw (ORCPT ); Tue, 3 Dec 2019 17:39:52 -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 8B39D20862; Tue, 3 Dec 2019 22:39:51 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1575412792; bh=6xyK8o/gOgI9IfBK/zYzjcmDxtLo1/v0Rv2IftUjTrg=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=MSPNWdEdUADByHjRADBvQjVs6zURtZxb8EiNfU5mw/SOM375y/dxAjuuBYUaT0yQs N1yEpLiAqIJxSq5MDsEHZ4U8zhrc0anutmFzCBRJFLY3WMKt9eeWrxrV7v5CCXK0RB 7BUdyHI0sn9Fczz98UEshzQidFXKhoAzbF8i+NAw= 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 5.3 019/135] clk: samsung: exynos5420: Preserve PLL configuration during suspend/resume Date: Tue, 3 Dec 2019 23:34:19 +0100 Message-Id: <20191203213009.670464810@linuxfoundation.org> X-Mailer: git-send-email 2.24.0 In-Reply-To: <20191203213005.828543156@linuxfoundation.org> References: <20191203213005.828543156@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 dfa862d55246e..31466cd1842f8 100644 --- a/drivers/clk/samsung/clk-exynos5420.c +++ b/drivers/clk/samsung/clk-exynos5420.c @@ -165,12 +165,18 @@ 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