| Message ID | 20230702124110.3709566-1-jonas@kwiboo.se |
|---|---|
| Headers | show
Return-Path: <u-boot-bounces@lists.denx.de> X-Original-To: incoming@patchwork.ozlabs.org Delivered-To: patchwork-incoming@legolas.ozlabs.org Authentication-Results: legolas.ozlabs.org; spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de; envelope-from=u-boot-bounces@lists.denx.de; receiver=<UNKNOWN>) Authentication-Results: legolas.ozlabs.org; dkim=fail reason="key not found in DNS" header.d=kwiboo.se header.i=@kwiboo.se header.a=rsa-sha256 header.s=s1 header.b=ZUQSV4Rc; dkim-atps=neutral Received: from phobos.denx.de (phobos.denx.de [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange X25519 server-signature ECDSA (P-384)) (No client certificate requested) by legolas.ozlabs.org (Postfix) with ESMTPS id 4Qv7w93NPyz20Pj for <incoming@patchwork.ozlabs.org>; Sun, 2 Jul 2023 22:41:27 +1000 (AEST) Received: from h2850616.stratoserver.net (localhost [IPv6:::1]) by phobos.denx.de (Postfix) with ESMTP id E42F886261; Sun, 2 Jul 2023 14:41:19 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kwiboo.se Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de Authentication-Results: phobos.denx.de; dkim=pass (2048-bit key; unprotected) header.d=kwiboo.se header.i=@kwiboo.se header.b="ZUQSV4Rc"; dkim-atps=neutral Received: by phobos.denx.de (Postfix, from userid 109) id 7928086202; Sun, 2 Jul 2023 14:41:18 +0200 (CEST) X-Spam-Checker-Version: SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de X-Spam-Level: X-Spam-Status: No, score=-2.1 required=5.0 tests=BAYES_00,DKIM_SIGNED, DKIM_VALID,DKIM_VALID_AU,DKIM_VALID_EF,RCVD_IN_MSPIKE_H3, RCVD_IN_MSPIKE_WL,SPF_HELO_NONE,SPF_PASS,T_SCC_BODY_TEXT_LINE, UNPARSEABLE_RELAY autolearn=ham autolearn_force=no version=3.4.2 Received: from s.wrqvwxzv.outbound-mail.sendgrid.net (s.wrqvwxzv.outbound-mail.sendgrid.net [149.72.154.232]) (using TLSv1.3 with cipher TLS_AES_128_GCM_SHA256 (128/128 bits)) (No client certificate requested) by phobos.denx.de (Postfix) with ESMTPS id C30B486202 for <u-boot@lists.denx.de>; Sun, 2 Jul 2023 14:41:15 +0200 (CEST) Authentication-Results: phobos.denx.de; dmarc=pass (p=none dis=none) header.from=kwiboo.se Authentication-Results: phobos.denx.de; spf=pass smtp.mailfrom=bounces+31435339-7456-u-boot=lists.denx.de@em2124.kwiboo.se DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=from:subject:mime-version:to:cc:content-transfer-encoding: content-type:cc:content-type:from:subject:to; s=s1; bh=CTgpWj4ExGKk0JS15hBDsXqTMzNLOrwHt3pYMuryu8E=; b=ZUQSV4Rcq02LupY+wb2qDc6btBmdUG3uyOY1ImofNw0loqhjeb0UUSr/h+AbabXVTqP0 k7cvbyhPVcnIlPWt7eL/b7kx/Z0/liWCx/fcb7bgYW2Lr5FAmSKftqJolVhR8qbX2Q4thd NSWZl0XamFnDMtj3R77bZ4XwT245OS+JXs8yIRBGIM9Ljbj+NyCyTJwcsPSDUrI5gTS+bn 4H1uc7MSOTZHRjsrYe3Bnfgp5doWQuw37Z64Q3QsjDA8WX87Toe3d/iOOU0HKcgKcNvdLs ZKIumVlxMSnGT3L3wb/87yLzdobO+IKDnIjgjQ9ducn7QpXHxoNpw2z82JcwRTYQ== Received: by filterdrecv-84b96456cb-24m7s with SMTP id filterdrecv-84b96456cb-24m7s-1-64A17069-17 2023-07-02 12:41:13.542598912 +0000 UTC m=+4539741.775300278 Received: from bionic.localdomain (unknown) by geopod-ismtpd-canary-0 (SG) with ESMTP id boNrHB_RRvWHtd0fRjPpFw Sun, 02 Jul 2023 12:41:12.934 +0000 (UTC) From: Jonas Karlman <jonas@kwiboo.se> Subject: [PATCH 0/2] power: regulator: rk8xx: Add 500us delay after LDO regulator is enabled Date: Sun, 02 Jul 2023 12:41:13 +0000 (UTC) Message-ID: <20230702124110.3709566-1-jonas@kwiboo.se> X-Mailer: git-send-email 2.41.0 MIME-Version: 1.0 X-SG-EID: TdbjyGynYnRZWhH+7lKUQJL+ZxmxpowvO2O9SQF5CwCVrYgcwUXgU5DKUU3QxAfZekEeQsTe+RrMu3cja6a0hyYScmfIggdCRsRUlAH5hQ5xTR8qhZT7uHS+Y2tnxkonvm5zbprW0OoYkZ7FZ3nSzMeX4bMmghKsyt6HxzjEIhwEwGDpF4ve0aPXYO3mI7adRMxOijQvdosxU3za6bdqYLg7TEswh51AfE+4aeEQ68PIQJlMhHbKrtyxb9iHmyB1 To: Kever Yang <kever.yang@rock-chips.com>, Elaine Zhang <zhangqing@rock-chips.com> Cc: Jaehoon Chung <jh80.chung@samsung.com>, Peng Fan <peng.fan@nxp.com>, u-boot@lists.denx.de, Jonas Karlman <jonas@kwiboo.se> X-Entity-ID: P7KYpSJvGCELWjBME/J5tg== Content-Transfer-Encoding: 7bit Content-Type: text/plain; charset=us-ascii X-BeenThere: u-boot@lists.denx.de X-Mailman-Version: 2.1.39 Precedence: list List-Id: U-Boot discussion <u-boot.lists.denx.de> List-Unsubscribe: <https://lists.denx.de/options/u-boot>, <mailto:u-boot-request@lists.denx.de?subject=unsubscribe> List-Archive: <https://lists.denx.de/pipermail/u-boot/> List-Post: <mailto:u-boot@lists.denx.de> List-Help: <mailto:u-boot-request@lists.denx.de?subject=help> List-Subscribe: <https://lists.denx.de/listinfo/u-boot>, <mailto:u-boot-request@lists.denx.de?subject=subscribe> Errors-To: u-boot-bounces@lists.denx.de Sender: "U-Boot" <u-boot-bounces@lists.denx.de> X-Virus-Scanned: clamav-milter 0.103.8 at phobos.denx.de X-Virus-Status: Clean |
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power: regulator: rk8xx: Add 500us delay after LDO regulator is enabled
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With the series "regulator: implement basic reference counter" [1], keeping regulator enablement in balance become more important. A quick power cycle of a LDO regulator during dw-mmc signal voltage change, see patch 1, has shown that SD-card does not always get recognized after the vqmmc-supply is re-enabled. Patch 2 fix this issue by applying a similar 400us enable_time delay the linux driver use. Patch 1 is marked as DO NOT MERGE because it may have unintended affects like this and should be considered together with the "regulator: implement basic reference counter" series. [1] https://patchwork.ozlabs.org/project/uboot/list/?series=351536 Jonas Karlman (2): DO NOT MERGE: mmc: dw_mmc: Keep vqmmc-supply enable count in balance power: regulator: rk8xx: Add 500us delay after LDO regulator is enabled drivers/mmc/dw_mmc.c | 4 ++++ drivers/power/regulator/rk8xx.c | 4 ++++ 2 files changed, 8 insertions(+)