From patchwork Mon Feb 22 12:36:20 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Greg KH X-Patchwork-Id: 386677 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=-18.8 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,DKIM_VALID_AU,HEADER_FROM_DIFFERENT_DOMAINS, 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 83B6DC433E0 for ; Mon, 22 Feb 2021 12:48:53 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 3D32964DF0 for ; Mon, 22 Feb 2021 12:48:53 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S231433AbhBVMsr (ORCPT ); Mon, 22 Feb 2021 07:48:47 -0500 Received: from mail.kernel.org ([198.145.29.99]:57090 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S231667AbhBVMo7 (ORCPT ); Mon, 22 Feb 2021 07:44:59 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id 9D06F64E67; Mon, 22 Feb 2021 12:41:15 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1613997676; bh=ZDe4L3PVB4fi3EOaZw674WleI4DMfCBo4JZOUPZN+0U=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=VEorA6MhEZd69lDy8OH5d00Urj2kt5GMQNaLW8ErNXgk6KRbNAvQOYRk8vMc3vahB tJ7oKuRVv8JO+wfn82HbKwLECzBVA0P8ilbFEHqFuM2RAUnRJ5lzGS8Lb/t+aer2AZ oeVtI8iyVNTLgt96jBImEIYl21COSHwNB5I4cJuM= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Alexandre Belloni , Gregory CLEMENT , Arnd Bergmann , Sasha Levin Subject: [PATCH 4.9 22/49] ARM: dts: lpc32xx: Revert set default clock rate of HCLK PLL Date: Mon, 22 Feb 2021 13:36:20 +0100 Message-Id: <20210222121026.549199456@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210222121022.546148341@linuxfoundation.org> References: <20210222121022.546148341@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: stable@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 2802c9565b6ca..976a75a4eb2c6 100644 --- a/arch/arm/boot/dts/lpc32xx.dtsi +++ b/arch/arm/boot/dts/lpc32xx.dtsi @@ -323,9 +323,6 @@ clocks = <&xtal_32k>, <&xtal>; clock-names = "xtal_32k", "xtal"; - - assigned-clocks = <&clk LPC32XX_CLK_HCLK_PLL>; - assigned-clock-rates = <208000000>; }; };