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=-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, 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 900E2C433E0 for ; Mon, 1 Mar 2021 18:20:49 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 6151A64DF4 for ; Mon, 1 Mar 2021 18:20:49 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S234743AbhCASUW (ORCPT ); Mon, 1 Mar 2021 13:20:22 -0500 Received: from mail.kernel.org ([198.145.29.99]:34308 "EHLO mail.kernel.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S239325AbhCASOS (ORCPT ); Mon, 1 Mar 2021 13:14:18 -0500 Received: by mail.kernel.org (Postfix) with ESMTPSA id D161865154; Mon, 1 Mar 2021 17:05:25 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1614618326; bh=2ofTlYhRMrrJUBm1C8y0Nj+ZwYw0nakXxyN4FisWN2k=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=I2tyxFB5EImIk/Q/LTHQLP0B4N6JTSEqwBmD0Q7cbr2LOcxx1mIWM0gCZemzdoP9x q1O8yt4DGvBVjHk2uRApowM1/C5dh01z682FbTRt1mIUlxvOhqQMDTnhkaUwiK8iBl cjm66MtPdSHxAgZJC+NhgCDfg2kE+IexpTnjuRsw= From: Greg Kroah-Hartman To: linux-kernel@vger.kernel.org Cc: Greg Kroah-Hartman , stable@vger.kernel.org, Andre Przywara , Chen-Yu Tsai , Maxime Ripard , Sasha Levin Subject: [PATCH 5.10 047/663] arm64: dts: allwinner: H6: Allow up to 150 MHz MMC bus frequency Date: Mon, 1 Mar 2021 17:04:55 +0100 Message-Id: <20210301161144.101195968@linuxfoundation.org> X-Mailer: git-send-email 2.30.1 In-Reply-To: <20210301161141.760350206@linuxfoundation.org> References: <20210301161141.760350206@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: stable@vger.kernel.org From: Andre Przywara [ Upstream commit cfe6c487b9a1abc6197714ec5605716a5428cf03 ] The H6 manual explicitly lists a frequency limit of 150 MHz for the bus frequency of the MMC controllers. So far we had no explicit limits in the DT, which limited eMMC to the spec defined frequencies, or whatever the driver defines (both Linux and FreeBSD use 52 MHz here). Put those maximum frequencies in the SoC .dtsi, to allow higher speed modes (which still would need to be explicitly enabled, per board). Tested with an eMMC using HS-200 on a Pine H64. Running at the spec'ed 200 MHz indeed fails with I/O errors, but 150 MHz seems to work stably. Fixes: 8f54bd1595b3 ("arm64: allwinner: h6: add device tree nodes for MMC controllers") Signed-off-by: Andre Przywara Acked-by: Chen-Yu Tsai Signed-off-by: Maxime Ripard Link: https://lore.kernel.org/r/20210113152630.28810-6-andre.przywara@arm.com Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi | 3 +++ 1 file changed, 3 insertions(+) diff --git a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi index 0361f5f467093..4592fb7a6161d 100644 --- a/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi +++ b/arch/arm64/boot/dts/allwinner/sun50i-h6.dtsi @@ -436,6 +436,7 @@ interrupts = ; pinctrl-names = "default"; pinctrl-0 = <&mmc0_pins>; + max-frequency = <150000000>; status = "disabled"; #address-cells = <1>; #size-cells = <0>; @@ -452,6 +453,7 @@ interrupts = ; pinctrl-names = "default"; pinctrl-0 = <&mmc1_pins>; + max-frequency = <150000000>; status = "disabled"; #address-cells = <1>; #size-cells = <0>; @@ -468,6 +470,7 @@ interrupts = ; pinctrl-names = "default"; pinctrl-0 = <&mmc2_pins>; + max-frequency = <150000000>; status = "disabled"; #address-cells = <1>; #size-cells = <0>; -- 2.27.0