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GET /api/patches/2225437/?format=api
{ "id": 2225437, "url": "http://patchwork.ozlabs.org/api/patches/2225437/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/patch/20260421-02-spi-fifo-reset-v1-1-e2cdd4bd474d@gentoo.org/", "project": { "id": 18, "url": "http://patchwork.ozlabs.org/api/projects/18/?format=api", "name": "U-Boot", "link_name": "uboot", "list_id": "u-boot.lists.denx.de", "list_email": "u-boot@lists.denx.de", "web_url": null, "scm_url": null, "webscm_url": null, "list_archive_url": "", "list_archive_url_format": "", "commit_url_format": "" }, "msgid": "<20260421-02-spi-fifo-reset-v1-1-e2cdd4bd474d@gentoo.org>", "list_archive_url": null, "date": "2026-04-21T04:47:50", "name": "spi: sunxi: wait for TX/RX fifo reset done", "commit_ref": null, "pull_url": null, "state": "new", "archived": false, "hash": "88981ef4f7f76f1545c13ee2b28b8e06218df419", "submitter": { "id": 72557, "url": "http://patchwork.ozlabs.org/api/people/72557/?format=api", "name": "Yixun Lan", "email": "dlan@gentoo.org" }, "delegate": { "id": 114289, "url": "http://patchwork.ozlabs.org/api/users/114289/?format=api", "username": "apritzel", "first_name": "Andre", "last_name": "Przywara", "email": "andre.przywara@arm.com" }, "mbox": "http://patchwork.ozlabs.org/project/uboot/patch/20260421-02-spi-fifo-reset-v1-1-e2cdd4bd474d@gentoo.org/mbox/", "series": [ { "id": 500725, "url": "http://patchwork.ozlabs.org/api/series/500725/?format=api", "web_url": "http://patchwork.ozlabs.org/project/uboot/list/?series=500725", "date": "2026-04-21T04:47:50", "name": "spi: sunxi: wait for TX/RX fifo reset done", "version": 1, "mbox": "http://patchwork.ozlabs.org/series/500725/mbox/" } ], "comments": "http://patchwork.ozlabs.org/api/patches/2225437/comments/", "check": "pending", "checks": "http://patchwork.ozlabs.org/api/patches/2225437/checks/", "tags": {}, "related": [], "headers": { "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;\n spf=pass (sender SPF authorized) smtp.mailfrom=lists.denx.de\n (client-ip=2a01:238:438b:c500:173d:9f52:ddab:ee01; helo=phobos.denx.de;\n envelope-from=u-boot-bounces@lists.denx.de; receiver=patchwork.ozlabs.org)", "phobos.denx.de;\n dmarc=fail (p=none dis=none) header.from=gentoo.org", "phobos.denx.de;\n spf=pass smtp.mailfrom=u-boot-bounces@lists.denx.de", "phobos.denx.de;\n dmarc=fail (p=none dis=none) header.from=gentoo.org", "phobos.denx.de; spf=pass smtp.mailfrom=dlan@gentoo.org" ], "Received": [ "from phobos.denx.de (phobos.denx.de\n [IPv6:2a01:238:438b:c500:173d:9f52:ddab:ee01])\n\t(using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n\t key-exchange x25519 server-signature ECDSA (secp384r1) server-digest SHA384)\n\t(No client certificate requested)\n\tby legolas.ozlabs.org (Postfix) with ESMTPS id 4g08xY5Cbgz1yCv\n\tfor <incoming@patchwork.ozlabs.org>; Tue, 21 Apr 2026 14:48:17 +1000 (AEST)", "from h2850616.stratoserver.net (localhost [IPv6:::1])\n\tby phobos.denx.de (Postfix) with ESMTP id 3C63483FFA;\n\tTue, 21 Apr 2026 06:48:15 +0200 (CEST)", "by phobos.denx.de (Postfix, from userid 109)\n id EABCD8419C; Tue, 21 Apr 2026 06:48:13 +0200 (CEST)", "from smtp.gentoo.org (woodpecker.gentoo.org [140.211.166.183])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits))\n (No client certificate requested)\n by phobos.denx.de (Postfix) with ESMTPS id A704980433\n for <u-boot@lists.denx.de>; Tue, 21 Apr 2026 06:48:11 +0200 (CEST)", "from ofovo.local (unknown [116.232.124.22])\n (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits)\n key-exchange x25519 server-signature RSA-PSS (4096 bits) server-digest\n SHA256)\n (No client certificate requested) (Authenticated sender: dlan)\n by smtp.gentoo.org (Postfix) with ESMTPSA id E8773342020;\n Tue, 21 Apr 2026 04:48:05 +0000 (UTC)" ], "X-Spam-Checker-Version": "SpamAssassin 3.4.2 (2018-09-13) on phobos.denx.de", "X-Spam-Level": "", "X-Spam-Status": "No, score=-1.9 required=5.0 tests=BAYES_00,\n RCVD_IN_DNSWL_BLOCKED,RCVD_IN_MSPIKE_H3,RCVD_IN_MSPIKE_WL,\n SPF_HELO_PASS,SPF_PASS autolearn=ham autolearn_force=no version=3.4.2", "From": "Yixun Lan <dlan@gentoo.org>", "Date": "Tue, 21 Apr 2026 04:47:50 +0000", "Subject": "[PATCH] spi: sunxi: wait for TX/RX fifo reset done", "MIME-Version": "1.0", "Content-Type": "text/plain; charset=\"utf-8\"", "Content-Transfer-Encoding": "7bit", "Message-Id": "<20260421-02-spi-fifo-reset-v1-1-e2cdd4bd474d@gentoo.org>", "X-B4-Tracking": "v=1; b=H4sIAHUB52kC/x3MPQqAMAxA4auUzAba1B/wKuIgmmqWtjQignh3i\n +M3vPeAchFWGM0DhS9RSbHCNQbWY4k7o2zVQJZ6S2TREmoWDBISFlY+kTr2g/OuXX2A2uXCQe7\n /Oc3v+wH0nO7WYwAAAA==", "X-Change-ID": "20260220-02-spi-fifo-reset-25e371314c3f", "To": "u-boot@lists.denx.de", "Cc": "linux-sunxi@lists.linux.dev, Andre Przywara <andre.przywara@arm.com>,\n Jagan Teki <jagan@amarulasolutions.com>, Tom Rini <trini@konsulko.com>,\n Yixun Lan <dlan@gentoo.org>", "X-Mailer": "b4 0.14.3", "X-Developer-Signature": "v=1; a=openpgp-sha256; l=1942; i=dlan@gentoo.org;\n h=from:subject:message-id; bh=HQ8gi3qkGDAytzDkMpwdgUvUWfOgiVivh5rYb7fjdrc=;\n b=owEB6QIW/ZANAwAKATGq6kdZTbvtAcsmYgBp5wGChkbAlN8OK0lV/mPLuSACAPd5BqFV5zmzk\n BGA+AoKQdaJAq8EAAEKAJkWIQS1urjJwxtxFWcCI9wxqupHWU277QUCaecBghsUgAAAAAAEAA5t\n YW51MiwyLjUrMS4xMSwyLDJfFIAAAAAALgAoaXNzdWVyLWZwckBub3RhdGlvbnMub3BlbnBncC5\n maWZ0aGhvcnNlbWFuLm5ldEI1QkFCOEM5QzMxQjcxMTU2NzAyMjNEQzMxQUFFQTQ3NTk0REJCRU\n QACgkQMarqR1lNu+1x0Q/9HaxhtYzaHKO+PAlwGgyrBOrOKnyX2nQ3WozR0ltqr125Hau+SRAPq\n 9OCVmvKUpxbmx6IqB772GfabuVrr9F7GkRL1NHRCCB/gdj40B408YzYRc1vsK/4/xDlLEvEyZx4\n 9yEuMHvlrJCqACl9zfGVFzCHxurbmxWhIvo2O25DqPt+zON0SLB1QHnmZDLSyVn46EOKSAIxI6g\n ltMAucSg6UUKg9AIMbmjg/nJ9EG5kRbRKZcpWvGOvX8hvllsQIOu5W9CYGsheQbrmHdSgOH87Qc\n 1y1zp1MypRdmf14BKNYpyUxmpX0oDiw+uD2Y/W7UEiDtsSVueQsnofySASUwRn1ecFx+5Ex3QP/\n l8vjSDWpFxnUIVNKWFeA5tkmRRTdxQJyCXvRtbrJiYeaSPkWxnv9ICEHeoNTRt5DUYFRJydAfW5\n GlYQNOWt1NAQgu92ujg9Z772WNwq4x1ga6jSVwvD/TC+oa2yNk2MGPxCTfGNIhnFCzxHueIHUgh\n 4DVMBYgdZmH7OqasNZi+QrUV16BuqFua3xLGW2np9sZOFvaV2djNTXr70fgHoOogKp0S3Pa4Gx0\n 0j2gDBVX7c1GJeGh11e1D+t8b14nCxTcDiwzxpPeMRfPqD1A3PrxV45DoYixZgUxp7zD2hvzk+L\n piQzVEb2hRRBPeKLo4cu+1gkjeWoF0=", "X-Developer-Key": "i=dlan@gentoo.org; a=openpgp;\n fpr=50B03A1A5CBCD33576EF8CD7920C0DBCAABEFD55", "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>,\n <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>,\n <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" }, "content": "Once reset SPI TX or RX fifo, the underlying hardware need to take\nsome time to actually settle down, the two bits will automatically\nclear to 0, so use a poll mechanism to check status bits to make sure\nit's done correctly.\n\nSigned-off-by: Yixun Lan <dlan@gentoo.org>\n---\nOn Cubie A7A board which using A733 SoC, we encoutered a SPI nor flash\ntimeout issue, it turns out that the SPI fifo reset take a few time to\nsettle down, Add a loop to poll the status.\n\nThis was the error message shows on A7A board once this issue happened.\n\n=> sf probe\nERROR: sun4i_spi: Timeout transferring data\nFailed to initialize SPI flash at 0:0 (error -2)\n---\n drivers/spi/spi-sunxi.c | 9 ++++++---\n 1 file changed, 6 insertions(+), 3 deletions(-)\n\n\n---\nbase-commit: 88dc2788777babfd6322fa655df549a019aa1e69\nchange-id: 20260220-02-spi-fifo-reset-25e371314c3f\n\nBest regards,", "diff": "diff --git a/drivers/spi/spi-sunxi.c b/drivers/spi/spi-sunxi.c\nindex e00532a371b..cf41905c7b7 100644\n--- a/drivers/spi/spi-sunxi.c\n+++ b/drivers/spi/spi-sunxi.c\n@@ -347,7 +347,7 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,\n \tstruct sun4i_spi_priv *priv = dev_get_priv(bus);\n \tstruct dm_spi_slave_plat *slave_plat = dev_get_parent_plat(dev);\n \n-\tu32 len = bitlen / 8;\n+\tu32 rst, val, len = bitlen / 8;\n \tu8 nbytes;\n \tint ret;\n \n@@ -363,8 +363,11 @@ static int sun4i_spi_xfer(struct udevice *dev, unsigned int bitlen,\n \t\tsun4i_spi_set_cs(bus, slave_plat->cs[0], true);\n \n \t/* Reset FIFOs */\n-\tsetbits_le32(SPI_REG(priv, SPI_FCR), SPI_BIT(priv, SPI_FCR_RF_RST) |\n-\t\t SPI_BIT(priv, SPI_FCR_TF_RST));\n+\trst = SPI_BIT(priv, SPI_FCR_RF_RST) | SPI_BIT(priv, SPI_FCR_TF_RST);\n+\tsetbits_le32(SPI_REG(priv, SPI_FCR), rst);\n+\tret = readl_poll_timeout(SPI_REG(priv, SPI_FCR), val, !(rst & val), 20);\n+\tif (ret)\n+\t\treturn -EBUSY;\n \n \twhile (len) {\n \t\t/* Setup the transfer now... */\n", "prefixes": [] }