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=-10.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,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 CE62BC47409 for ; Fri, 14 Feb 2020 16:19:58 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id A5AD02471E for ; Fri, 14 Feb 2020 16:19:58 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="Q6Q9tFWf"; dkim=fail reason="signature verification failed" (1024-bit key) header.d=kernel.org header.i=@kernel.org header.b="1FlUYGt7" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org A5AD02471E Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=kernel.org Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org 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:References:In-Reply-To: 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: List-Owner; bh=uX8oYaHxvYi+Wv8fOoEhFzOH/koTVyLEmsIVHm4iKgg=; b=Q6Q9tFWf+wR+3b sQgVWYzu109UqQfkLfZ50wLY+Jai/pVmJ/K8uHA4Dl3VIWdOAtwEJc4VrSYwMNIWfSXj4pCxI3X88 VNmd6dRB6/OZ48MGbh1LitGeVrQsvOOMva+jOMd+1YKD8vHGLb5d2II3gVj2vjDUIH7dLpeHVMW7H O9YftoxHdR6qnRUerx6CZ6t+QA9c2wOaPXhdqVmoEYHSeQ3MHvu+T6EiKtP1AM8RDyqntinqJ4fQM o3BLEIvWxW6wG2G8+wJn/AGb3dC1vojg+e08TeN1GXG3DSMuqfXZ9tLa4TunNLb2BnzSmAGawoxm4 4S+LRSipN4GTjMnS0KfQ==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2dh0-0002iT-Cc; Fri, 14 Feb 2020 16:19:50 +0000 Received: from mail.kernel.org ([198.145.29.99]) by bombadil.infradead.org with esmtps (Exim 4.92.3 #3 (Red Hat Linux)) id 1j2dQU-0000wK-Hl for linux-arm-kernel@lists.infradead.org; Fri, 14 Feb 2020 16:02:49 +0000 Received: from sasha-vm.mshome.net (c-73-47-72-35.hsd1.nh.comcast.net [73.47.72.35]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPSA id EF70124684; Fri, 14 Feb 2020 16:02:44 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=default; t=1581696165; bh=3mMW9xAzJDDMfYwE+KOeTghpU9ATN3hhSY+NwNKGAbo=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=1FlUYGt7UFejq/TNF2kLMo8TmyVUNcpf2ukc6NuxyXDG1EqpO5XJOmR6sSl4AHvPm fBg/YwkobGsjnWz6x2fAqNZZpZGE572/M7D3RHbbyniJ6DPoM4IXs5pA1e6AmoI5NZ MWzHKlscPH6Vj5PfV1yUDZF01wpb/yuDF2jRpUX4= From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Subject: [PATCH AUTOSEL 5.4 041/459] clk: at91: sam9x60: fix programmable clock prescaler Date: Fri, 14 Feb 2020 10:54:51 -0500 Message-Id: <20200214160149.11681-41-sashal@kernel.org> X-Mailer: git-send-email 2.20.1 In-Reply-To: <20200214160149.11681-1-sashal@kernel.org> References: <20200214160149.11681-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200214_080246_655784_522D59A7 X-CRM114-Status: GOOD ( 10.12 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Stephen Boyd , Eugen Hristev , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org, Sasha Levin Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org From: Eugen Hristev [ Upstream commit 66d9f5214c9ba1c151478f99520b6817302d50dc ] The prescaler works as parent rate divided by (PRES + 1) (is_pres_direct == 1) It does not work in the way of parent rate shifted to the right by (PRES + 1), which means division by 2^(PRES + 1) (is_pres_direct == 0) Thus is_pres_direct must be enabled for this SoC, to make the right computation. This field was added in commit 45b06682113b ("clk: at91: fix programmable clock for sama5d2") SAM9X60 has the same field as SAMA5D2 in the PCK Fixes: 01e2113de9a5 ("clk: at91: add sam9x60 pmc driver") Signed-off-by: Eugen Hristev Link: https://lkml.kernel.org/r/1575977088-16781-1-git-send-email-eugen.hristev@microchip.com Signed-off-by: Stephen Boyd Signed-off-by: Sasha Levin --- drivers/clk/at91/sam9x60.c | 1 + 1 file changed, 1 insertion(+) diff --git a/drivers/clk/at91/sam9x60.c b/drivers/clk/at91/sam9x60.c index 86238d5ecb4da..77398aefeb6db 100644 --- a/drivers/clk/at91/sam9x60.c +++ b/drivers/clk/at91/sam9x60.c @@ -47,6 +47,7 @@ static const struct clk_programmable_layout sam9x60_programmable_layout = { .pres_shift = 8, .css_mask = 0x1f, .have_slck_mck = 0, + .is_pres_direct = 1, }; static const struct clk_pcr_layout sam9x60_pcr_layout = { -- 2.20.1 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel