From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-1.web.codeaurora.org [10.30.226.201]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 64D4F3ACA68; Mon, 23 Mar 2026 13:55:03 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=10.30.226.201 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274103; cv=none; b=YIXM14idT997cfCy89WAgPawRNSlTO3O8Xbt4pjSC3TZELL4NDcjhIrhpUI0vHl4qffQCYAszyXURo23iD/ndXMNK2O1fD961fCRO+mgPBepKxJ+inmYg7lvz/OxChF2Lw7a09/7Pf63N9ejFt58aEUCqf8n5IEYBitvIPJE434= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1774274103; c=relaxed/simple; bh=+y72m6ZUbbh73fEzK2vDN2c6hi2hYzUJTor0aFdu2Nw=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=e3hhu2Y088J5Ts8p8mAyrINstDNgFA4JjSEzJHyFVyr+Jawr4tB2WC4piWFr3QRj3Zqi2m1JSfVvVaPBqK33J062MK1F+oWcSJ1GBfZ71NQW6/Zukybfpc8wAZ6AsBbpCdN46vG7qytcOxI0Fbppd4B02tLnmvtn6jkNYYvzCDM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b=UPo2/gku; arc=none smtp.client-ip=10.30.226.201 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=linuxfoundation.org header.i=@linuxfoundation.org header.b="UPo2/gku" Received: by smtp.kernel.org (Postfix) with ESMTPSA id E1BABC4CEF7; Mon, 23 Mar 2026 13:55:02 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=linuxfoundation.org; s=korg; t=1774274103; bh=+y72m6ZUbbh73fEzK2vDN2c6hi2hYzUJTor0aFdu2Nw=; h=From:To:Cc:Subject:Date:In-Reply-To:References:From; b=UPo2/gkudyiBoB/8IIJf1kx0otFAeWhUgYWhrHoBN0z/Xxs9WnlG/RVVvaai0d02t ttOOr8SUPfFA0I2/Hvc59qC7dfzweJrMuNj0c3LusKS3uuLmngtj84jP79haUC5/Od oX3GJAwag2TXhXNftMLx4JysjPTAr4EZ9LmTO9kU= From: Greg Kroah-Hartman To: stable@vger.kernel.org Cc: Greg Kroah-Hartman , patches@lists.linux.dev, Lad Prabhakar , Geert Uytterhoeven , Sasha Levin Subject: [PATCH 6.19 109/220] arm64: dts: renesas: rzv2-evk-cn15-sd: Add ramp delay for SD0 regulator Date: Mon, 23 Mar 2026 14:44:46 +0100 Message-ID: <20260323134508.044404447@linuxfoundation.org> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260323134504.575022936@linuxfoundation.org> References: <20260323134504.575022936@linuxfoundation.org> User-Agent: quilt/0.69 X-stable: review X-Patchwork-Hint: ignore Precedence: bulk X-Mailing-List: stable@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit 6.19-stable review patch. If anyone has any objections, please let me know. ------------------ From: Lad Prabhakar [ Upstream commit 5c03465ecf6a56b7b261df9594f0e10612f53a50 ] Set an appropriate ramp delay for the SD0 I/O voltage regulator in the CN15 SD overlay to make UHS-I voltage switching reliable during card initialization. This issue was observed on the RZ/V2H EVK, while the same UHS-I cards worked on the RZ/V2N EVK without problems. Adding the ramp delay makes the behavior consistent and avoids SD init timeouts. Before this change SD0 could fail with: mmc0: error -110 whilst initialising SD card With the delay in place UHS-I cards enumerate correctly: mmc0: new UHS-I speed SDR104 SDXC card at address aaaa mmcblk0: mmc0:aaaa SR64G 59.5 GiB mmcblk0: p1 Fixes: 3d6c2bc7629c8 ("arm64: dts: renesas: Add CN15 eMMC and SD overlays for RZ/V2H and RZ/V2N EVKs") Signed-off-by: Lad Prabhakar Reviewed-by: Geert Uytterhoeven Link: https://patch.msgid.link/20260123225957.1007089-5-prabhakar.mahadev-lad.rj@bp.renesas.com Signed-off-by: Geert Uytterhoeven Signed-off-by: Sasha Levin --- arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso b/arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso index 0af1e0a6c7f48..fc53c1aae3b52 100644 --- a/arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso +++ b/arch/arm64/boot/dts/renesas/rzv2-evk-cn15-sd.dtso @@ -25,6 +25,7 @@ regulator-max-microvolt = <3300000>; gpios-states = <0>; states = <3300000 0>, <1800000 1>; + regulator-ramp-delay = <60>; }; }; -- 2.51.0