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 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 smtp.lore.kernel.org (Postfix) with ESMTPS id 7C32BC19F32 for ; Fri, 7 Mar 2025 05:54:58 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender:List-Subscribe:List-Help :List-Post:List-Archive:List-Unsubscribe:List-Id:In-Reply-To:Content-Type: MIME-Version:References:Message-ID:Subject:Cc:To:From:Date:Reply-To: Content-Transfer-Encoding:Content-ID:Content-Description:Resent-Date: Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=olxLrd0QC9zoKYMcXvUz70QEQ37Dr3MKljzYN3XTg3w=; b=wdr5jbI0zr5tUTt+X+PFyAjdYJ NSHpiXu0CNF8Rbk3BX6XCAtUjpgvNhWsOs1oQfZ/8vCytNQfa2XYaszkRvU8RaJp5Nc5ZzrkJcIv0 oA0s08NlTVHj0gb91+OijYZDlqubq8WrizEgpcWGToX25i1IIwWBpuwFRqzlY8/I3XlUQY/2XeLbj MjnGl3I9EiufXn79Hr+6UJv+joHObhmF/W/0OAjK1DzcOow/lhcgeFKCLzPbBOSwWmc9RtgyOSKR8 9cTC7V2rO3Wrz/IoLwEm8u9Uce9PyybFtR/NCmZ12Zeu2wrApiNlIUdPDiPsmUNeCnjD++zHMfg3P wASHc6Ow==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1tqQfZ-0000000DG0Q-47fJ; Fri, 07 Mar 2025 05:54:49 +0000 Received: from layka.disroot.org ([178.21.23.139]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1tqQdx-0000000DFu9-1EFl; Fri, 07 Mar 2025 05:53:10 +0000 Received: from mail01.disroot.lan (localhost [127.0.0.1]) by disroot.org (Postfix) with ESMTP id 1E15425D53; Fri, 7 Mar 2025 06:52:59 +0100 (CET) X-Virus-Scanned: SPAM Filter at disroot.org Received: from layka.disroot.org ([127.0.0.1]) by localhost (disroot.org [127.0.0.1]) (amavis, port 10024) with ESMTP id tckWDYJ3Tzh5; Fri, 7 Mar 2025 06:52:58 +0100 (CET) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=disroot.org; s=mail; t=1741326778; bh=8pUgSgop8ysTVfRFBXPiQaRHFFGbXmooM4lxtk87R90=; h=Date:From:To:Cc:Subject:References:In-Reply-To; b=AOZJ9o5FvW8yfwecTcbsNRyFRpzyskfWAfP8kCR0cykMVfEp3cnzJUryHx1DxeEYh p3MsEvNrV3rvJencFZY1bQERwvUPvH1zgd5RsKXwdnEXuoYDKaRcW4XbiEUtunLxRw b0yHFE/cOsdfgQ1y9kotL5mg0VVt1Qc2Rq/DobUuFkohMiutlIqopJXbDFG4+TsMiY PzDkpIT6teC+LBBIGipyajKr45tBW+C9FarX8+euI6lkalw+53DIYdiArukvfPAyeG 2HoUaEG1audW1E9M2y525bHuexgCGddvX+I5Qe/AP271yw9lj2reCV/tjvtvIoY2d4 YpIzFCRidQNtg== Date: Fri, 7 Mar 2025 05:52:42 +0000 From: Yao Zi To: Chukun Pan Cc: conor+dt@kernel.org, cristian.ciocaltea@collabora.com, detlev.casanova@collabora.com, devicetree@vger.kernel.org, heiko@sntech.de, jonas@kwiboo.se, krzk+dt@kernel.org, linux-arm-kernel@lists.infradead.org, linux-clk@vger.kernel.org, linux-kernel@vger.kernel.org, linux-rockchip@lists.infradead.org Subject: Re: [PATCH v2 8/8] arm64: dts: rockchip: Enable SD-card interface on Radxa E20C Message-ID: References: <20250305194638.47187-1-ziyao@disroot.org> <20250307033508.656479-1-amadeus@jmu.edu.cn> MIME-Version: 1.0 Content-Type: text/plain; charset=us-ascii Content-Disposition: inline In-Reply-To: <20250307033508.656479-1-amadeus@jmu.edu.cn> X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250306_215309_749152_DE2EE555 X-CRM114-Status: GOOD ( 11.86 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org On Fri, Mar 07, 2025 at 11:35:08AM +0800, Chukun Pan wrote: > Hi, > > > +&sdmmc { > > + bus-width = <4>; > > + cap-mmc-highspeed; > > + cap-sd-highspeed; > > + disable-wp; > > + no-sdio; > > With 'no-sdio' property: > [ 129.608986] mmc_host mmc1: Bus speed (slot 0) = 400000Hz (slot req 400000Hz, actual 400000HZ div = 0) > [ 130.711168] mmc1: Card stuck being busy! __mmc_poll_for_busy > [ 130.725536] mmc_host mmc1: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0) > [ 131.751240] mmc1: Card stuck being busy! __mmc_poll_for_busy > [ 131.765608] mmc_host mmc1: Bus speed (slot 0) = 200000Hz (slot req 200000Hz, actual 200000HZ div = 0) > [ 132.825083] mmc1: Card stuck being busy! __mmc_poll_for_busy > [ 132.839413] mmc_host mmc1: Bus speed (slot 0) = 187500Hz (slot req 187500Hz, actual 187500HZ div = 0) > [ 133.960141] mmc1: Card stuck being busy! __mmc_poll_for_busy > > Without 'no-sdio' property: > [ 105.224019] mmc1: error -22 whilst initialising SDIO card > [ 106.290838] mmc1: Card stuck being busy! __mmc_poll_for_busy > [ 106.801931] dwmmc_rockchip ffc30000.mmc: Busy; trying anyway > [ 107.385835] mmc_host mmc1: Timeou sending command (cmd 0x202000 arg 0x0 status 0x80202000) > [ 107.400425] mmc_host mmc1: Bus speed (slot 0) = 300000Hz (slot req 300000Hz, actual 300000HZ div = 0) > [ 107.431561] mmc_host mmc1: Bus speed (slot 0) = 49800000Hz (slot req 50000000Hz, actual 49800000HZ div = 0) > [ 107.433107] mmc1: new high speed SDIO card at address 0001 So it seems the sdmmc controller actually works with SDIO commands as well? I don't expect that since the datasheet says RK3528 has only two SDIO 3.0 controllers. We could remove the "no-sdio" property if SDIO actually works. Will apply it in the next version if there's no objection against this. Further tests about the capabilities of the controller are welcome. > # cat /sys/kernel/debug/mmc1/ios > clock: 50000000 Hz > vdd: 21 (3.3 ~ 3.4 V) > bus mode: 2 (push-pull) > chip select: 0 (don't care) > power mode: 2 (on) > bus width: 2 (4 bits) > timing spec: 2 (sd high-speed) > signal voltage: 0 (3.30 V) > driver type: 0 (driver type B) > > Thanks, > Chukun > > -- > 2.25.1 > Best regards, Yao Zi