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envelope-from=marek.vasut@mailbox.org; receiver= Authentication-Results: smtp2.osuosl.org; dmarc=pass (p=reject dis=none) header.from=mailbox.org Authentication-Results: smtp2.osuosl.org; dkim=pass (2048-bit key, unprotected) header.d=mailbox.org header.i=@mailbox.org header.a=rsa-sha256 header.s=mail20150812 header.b=Vf4iJAvm Received: from mout-p-201.mailbox.org (mout-p-201.mailbox.org [80.241.56.171]) by smtp2.osuosl.org (Postfix) with ESMTPS id 05A1E400AE for ; Wed, 30 Sep 2026 00:43:23 +0000 (UTC) Received: from smtp202.mailbox.org (smtp202.mailbox.org [IPv6:2001:67c:2050:b231:465::202]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519MLKEM768 server-signature RSA-PSS (4096 bits) server-digest SHA256) (No client certificate requested) by mout-p-201.mailbox.org (Postfix) with ESMTPS id 4hvbr758PMzMlNY; Wed, 30 Sep 2026 02:43:19 +0200 (CEST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=mailbox.org; s=mail20150812; t=1790728999; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:cc:mime-version:mime-version:content-type:content-type: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=gSpAlHQ+rl9ghxmlNume4KDlCTGGUFlrOM5gGiKXTe0=; b=Vf4iJAvmCYMt1fbaauHGKb+GtgdFTKiTAhP2L9DDlkvh92pV/rOo5kF/XWoj7irPagO78i 52Qtbm5iPVHcV71E5DFzS9OR/H+5IVsy2dzgtcGXDqPV3zXb5VhN4PT2KtUcnaGvGimZW7 CoPkiasYjTNdTCkKMwzG8oevI5s5cHffWMd1iVK+WPaUYO4tGqVSa/+KGVO0kV5/uHFfjJ nMFDhUG/DiiTk5te2Zqlt/6s5sn5krO9OuCTeKo+e/z3zwfMdgh4+2Xlb7rgpZfzWOuF5w 6z6ppHBk+eZDw6evXWAl4JlIUgmAJ6c1fcbL0+HEGRG5xbEzY1UI11uas1AUoA== Message-ID: Date: Wed, 30 Sep 2026 02:43:17 +0200 MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH] lmb: Add StarFive JH-7110 SoC as requiring DMA below 4G To: E Shattow , Tom Rini Cc: Heinrich Schuchardt , Leo Liang , u-boot@lists.u-boot-project.org References: <20260929230758.616924-1-e@freeshell.de> Content-Language: en-US From: Marek Vasut In-Reply-To: <20260929230758.616924-1-e@freeshell.de> Content-Type: text/plain; charset=UTF-8; format=flowed Content-Transfer-Encoding: 7bit X-MBO-RS-META: tfp315s6o87sgoimeqqqfo8cxp34rbea X-MBO-RS-ID: 4eb90b7e43636c54eb9 X-BeenThere: u-boot@lists.u-boot-project.org X-Mailman-Version: 2.1.30 Precedence: list List-Id: U-Boot discussion List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Errors-To: u-boot-bounces@lists.u-boot-project.org On 9/30/26 1:07 AM, E Shattow wrote: > Platform drivers and hardware for StarFive JH-7110 SoC are not capable of > DMA access above 4GB 4 GiB >. This was previously a problem for MMC access then > resolved by a workaround, since reverted in a3075db94d49 ("lmb: Reinstate > access to memory above ram_top"). The symptom of this is EFI boot failure > of GRUB from EFI System Partition on USB MSC with a starfive_visionfive2 > board target that has the on-chip Cadence USB, tested with Pine64 Star64. > > Restore the workaround with a dependency on LMB_LIMIT_DMA_BELOW_RAM_TOP. > > Signed-off-by: E Shattow Reviewed-by: Marek Vasut