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=-19.5 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=unavailable 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 7EA8FC4338F for ; Tue, 10 Aug 2021 17:41:54 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 660416124E for ; Tue, 10 Aug 2021 17:41:54 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S235465AbhHJRmP (ORCPT ); Tue, 10 Aug 2021 13:42:15 -0400 Received: from mail.kernel.org ([198.145.29.99]:43594 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S235183AbhHJRjY (ORCPT ); Tue, 10 Aug 2021 13:39:24 -0400 Received: by mail.kernel.org (Postfix) with ESMTPSA id 508366113A; Tue, 10 Aug 2021 17:37:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1628617020; bh=ooCYp3uX7qKSY//qjg9LVIhwzJTv7v8qLxYCFlUW1A8=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=nOskn3xiKdcGvbUVf8L/bdFQ5kZWc4qwvecCtTQhkUagXJgq7pXwaXefFMW4Ua1em Lc9OooEMlees2w7Ek+zvapB/iMUHUIh5bKEVhDvWm8bE7bnQfAe6zW/OudjYb243tI BR4qMY6py6hcI6ygodHss/aAriuA4QLDXekJS3Lg= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Oleksandr Suvorov , Fabio Estevam , Shawn Guo , Sasha Levin Subject: [PATCH 5.10 010/135] ARM: dts: colibri-imx6ull: limit SDIO clock to 25MHz Date: Tue, 10 Aug 2021 19:29:04 +0200 Message-Id: <20210810172956.025886164@linuxfoundation.org> X-Mailer: git-send-email 2.32.0 In-Reply-To: <20210810172955.660225700@linuxfoundation.org> References: <20210810172955.660225700@linuxfoundation.org> User-Agent: quilt/0.66 MIME-Version: 1.0 Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 8bit Precedence: bulk List-ID: X-Mailing-List: linux-kernel@vger.kernel.org From: Oleksandr Suvorov [ Upstream commit 828db68f4ff1ab6982a36a56522b585160dc8c8e ] NXP and AzureWave don't recommend using SDIO bus mode 3.3V@50MHz due to noise affecting the wireless throughput. Colibri iMX6ULL uses only 3.3V signaling for Wi-Fi module AW-CM276NF. Limit the SDIO Clock on Colibri iMX6ULL to 25MHz. Fixes: c2e4987e0e02 ("ARM: dts: imx6ull: add Toradex Colibri iMX6ULL support") Signed-off-by: Oleksandr Suvorov Reviewed-by: Fabio Estevam Signed-off-by: Shawn Guo Signed-off-by: Sasha Levin --- arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi index a0545431b3dc..9f1e38282bee 100644 --- a/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi +++ b/arch/arm/boot/dts/imx6ull-colibri-wifi.dtsi @@ -43,6 +43,7 @@ assigned-clock-rates = <0>, <198000000>; cap-power-off-card; keep-power-in-suspend; + max-frequency = <25000000>; mmc-pwrseq = <&wifi_pwrseq>; no-1-8-v; non-removable; -- 2.30.2