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=-19.6 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,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 049C2C433E0 for ; Mon, 8 Feb 2021 18:04:07 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id C3D2564E37 for ; Mon, 8 Feb 2021 18:04:06 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235313AbhBHSD4 (ORCPT ); Mon, 8 Feb 2021 13:03:56 -0500 Received: from mail.kernel.org ([198.145.29.99]:46596 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235336AbhBHSDS (ORCPT ); Mon, 8 Feb 2021 13:03:18 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 5A46E64EBD; Mon, 8 Feb 2021 17:59:20 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=kernel.org; s=k20201202; t=1612807161; bh=CACrHjdgxxlqeca6xM+QPTTCAdtofJkj0XFyOoi53QY=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=LuhjM5bpXb6Emb4wcWtUeLC0/uzELzYb4hHo7FR/ZSs+x+auECSdj0mtETLb9SvQd AWzWGHYwz36SZWGY9yrLjDIQmNp0WzobvNrdkUud3H7oLocwFmX8udmmUCaw5YUVyw eZe4zlwNOMr9HKvnbDlwB6HUpjf8D494sAjTA0KqvF9fIbf2Ls5AGOtIF68O37Kp3S +zNFMlCfeQj8v4kG+pnn9hkQWCXK22K0UHYhHLA4fKGtZ6Xi2Xk57m1ao4878szbpq b5jXa7VFYeUXwQqPVP+7LCY9frRcwKlEPN+x0xZtThtLDxH8Ds44zwy/OhiZhiHgfO UnxKS2RZ7fCOw== From: Sasha Levin To: linux-kernel@vger.kernel.org, stable@vger.kernel.org Cc: Alexandre Belloni , Gregory CLEMENT , Arnd Bergmann , Sasha Levin , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org Subject: [PATCH AUTOSEL 5.4 16/19] ARM: dts: lpc32xx: Revert set default clock rate of HCLK PLL Date: Mon, 8 Feb 2021 12:58:55 -0500 Message-Id: <20210208175858.2092008-16-sashal@kernel.org> X-Mailer: git-send-email 2.27.0 In-Reply-To: <20210208175858.2092008-1-sashal@kernel.org> References: <20210208175858.2092008-1-sashal@kernel.org> MIME-Version: 1.0 X-stable: review X-Patchwork-Hint: Ignore Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: devicetree@vger.kernel.org From: Alexandre Belloni [ Upstream commit 5638159f6d93b99ec9743ac7f65563fca3cf413d ] This reverts commit c17e9377aa81664d94b4f2102559fcf2a01ec8e7. The lpc32xx clock driver is not able to actually change the PLL rate as this would require reparenting ARM_CLK, DDRAM_CLK, PERIPH_CLK to SYSCLK, then stop the PLL, update the register, restart the PLL and wait for the PLL to lock and finally reparent ARM_CLK, DDRAM_CLK, PERIPH_CLK to HCLK PLL. Currently, the HCLK driver simply updates the registers but this has no real effect and all the clock rate calculation end up being wrong. This is especially annoying for the peripheral (e.g. UARTs, I2C, SPI). Signed-off-by: Alexandre Belloni Tested-by: Gregory CLEMENT Link: https://lore.kernel.org/r/20210203090320.GA3760268@piout.net' Signed-off-by: Arnd Bergmann Signed-off-by: Sasha Levin --- arch/arm/boot/dts/lpc32xx.dtsi | 3 --- 1 file changed, 3 deletions(-) diff --git a/arch/arm/boot/dts/lpc32xx.dtsi b/arch/arm/boot/dts/lpc32xx.dtsi index 7b7ec7b1217b8..824393e1bcfb7 100644 --- a/arch/arm/boot/dts/lpc32xx.dtsi +++ b/arch/arm/boot/dts/lpc32xx.dtsi @@ -329,9 +329,6 @@ clk: clock-controller@0 { clocks = <&xtal_32k>, <&xtal>; clock-names = "xtal_32k", "xtal"; - - assigned-clocks = <&clk LPC32XX_CLK_HCLK_PLL>; - assigned-clock-rates = <208000000>; }; }; -- 2.27.0