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 C0541F94CAB for ; Tue, 21 Apr 2026 20:24:33 +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:Cc:To:In-Reply-To:References :Message-Id:Content-Transfer-Encoding:Content-Type:MIME-Version:Subject:Date: From:Reply-To:Content-ID:Content-Description:Resent-Date:Resent-From: Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID:List-Owner; bh=ln8CSZ8Zjp4CpkydhHUfH+wLZviy2qiJkheYqbMUKrY=; b=GvK0bZtYXZToa0lBnWY0CUoBFI JBkeJufuv4CrtFDey8QueKPnkhk8jW0I1acGBKgNJyvHjlYSMc01uTB24aCet0uv4zgM9FcTwMbbM p6GcPBw+teolsnnKLZ8MFMklQ0n6OGJIW+ByG95IgNajNU3qJ1842G1tolwQQdYW8UdgO4FQ5Onub ZvPL180nWxoAtJVq7S9LjEYosMRQqO2XCjBnYIAHMHXrDVUqU/a6//mOdfKFLFh90JgROH/8zSMrs QZCa1LkM6HwmeXLbLySxndbYTXfazXfylIXF1jbDxS9n7ak/2wYFks7Z+pbN61GhCe3NrB/nlu8Sr ZpgSGiRw==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFHe2-000000097yY-1p22; Tue, 21 Apr 2026 20:24:30 +0000 Received: from mail-wm1-x330.google.com ([2a00:1450:4864:20::330]) by bombadil.infradead.org with esmtps (Exim 4.98.2 #2 (Red Hat Linux)) id 1wFHe0-000000097vy-0X9D for linux-arm-kernel@lists.infradead.org; Tue, 21 Apr 2026 20:24:29 +0000 Received: by mail-wm1-x330.google.com with SMTP id 5b1f17b1804b1-48984d29fe3so33945485e9.0 for ; Tue, 21 Apr 2026 13:24:27 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1776803066; x=1777407866; darn=lists.infradead.org; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:from:to:cc:subject:date:message-id :reply-to; bh=ln8CSZ8Zjp4CpkydhHUfH+wLZviy2qiJkheYqbMUKrY=; b=ZaU0I841KDdk7gcwkA/FYvo05gdw/Mmy4wClLpKH3+VHhiVeD7ZUPUXdDz4sUynm26 aLMQPrW2VldZO2MEOxvB3ofxsW0ymwMP+0XrvFPRA4BAiC/nHvtUUvUvk8B0VviZ46/j RO6aHdd4qIDe4SDobCbMkW50Xob6mMJoKrKKgXW7WQGM/YroOQDCxOl42Yb9h1Fd9O1w mEB42ZSgsQSFVRN1UAp30ELxUUbve3oZiiCZ+LxQ/cXG3EnU+l55Fu9M01srEFAsOf1S IbKmgwFQlXa4YurVn8Tdk3Dh9xDDkLRCDG+RT2XVcjbJaB5r32Mv9yV67a01h2v7lHVf w6Fw== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1776803066; x=1777407866; h=cc:to:in-reply-to:references:message-id:content-transfer-encoding :mime-version:subject:date:from:x-gm-gg:x-gm-message-state:from:to :cc:subject:date:message-id:reply-to; bh=ln8CSZ8Zjp4CpkydhHUfH+wLZviy2qiJkheYqbMUKrY=; b=AfZGQczUzwqjrTmRtnvUGMpzX6CrF7D1nVrqbqEgK23Njh8Rhhiph1ptfVIChCVaBt tGVPHJKG1J0aAraUeGOL1LPx/S9l5pN6ezp/ELS0kPtY4bxTLadsygmZC1+IISUErEp0 FsFfcEiY0Gm3qKGPoVZ1O5U0JQZpq5hr8VkFa2QNt8O/1kNfUNG5eC8mBuZgpeEk4K2d frkrwmLwwmpAVEI6NST52s9q61Cue6nA7z7jRB6389fpn8uK40u8S3WMX5k24k//sFAH SLiVAxW5o5KIfT8RNCQhcPjZXwFaiWhW3Lff43JHjqrmyxfcuzo5TNmUulHO+VarG/vo bYzA== X-Forwarded-Encrypted: i=1; AFNElJ9zuMxEJlkfeWv+P8Xv3wbPErjS0gOSwWLX3QRmvoiz5V45x7N/OPpBYC1t5iqssTJa341zhvBQ1g618aYbhgpD@lists.infradead.org X-Gm-Message-State: AOJu0YzrDWqwvgJFVjnHLDTDTlkA+Q7GLbmbCvr7O4F/OG4BZ8DO1CWx LLJlVF1kd3KtaI9TDDMTItP+Pqv/UQIh8IBer5EQQr8VdlKYcZJ5HTA+8vm69kCzvA4= X-Gm-Gg: AeBDieucqXWtf29VA/Rj24n++MaUTUqtTCl4GgQ8ac1H59NuYDCM1sx0CGRAshOfPlp mzvIhscXFho3hVLxHQFYdqKoHRb6T0T5ro4hGg+QvT00mbLIWYXiPXMn1cziSDWYTPDbymW5Ie9 PpveRvMkwKwFVWUo/7ICCzpoz7fTD7iePXpsQBIxM4KEgrX8hasSf5WGOodrJWr4IAULKPc5ENI tHdG6BIWVhdWqMd+HeIotVNHoReE/vmhszyebfvRlgeswah9sOBSjUgS0JZOoRf/3la0fr+wWWA WGQJLJBwKdmQlEppLZdSz71S0lH1bkWfB0AIj7WVpXHdvjDj59CbLNwrTsFwVGy8TqzhiLdb0z2 NrzgOlWdMxmkGV4FR7qfSxbHr2rvRDM6IaQ5h0JwQS3QRZhTLRVHOkViR2OPfXkPzQppRDs6FoP MuROMsi8GWqNfymZBjud7uRErQbbq6kKfFfwBDUXoJw+fMowmul8m3u5c= X-Received: by 2002:a05:600c:1554:b0:488:9bf8:7f17 with SMTP id 5b1f17b1804b1-488fb77810bmr289995225e9.14.1776803066229; Tue, 21 Apr 2026 13:24:26 -0700 (PDT) Received: from [192.168.0.2] ([197.250.227.85]) by smtp.gmail.com with ESMTPSA id 5b1f17b1804b1-488fc0f82bbsm655989805e9.3.2026.04.21.13.24.20 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 21 Apr 2026 13:24:25 -0700 (PDT) From: =?utf-8?q?Stefan_D=C3=B6singer?= Date: Tue, 21 Apr 2026 23:23:14 +0300 Subject: [PATCH v5 6/8] amba/serial: amba-pl011: Bring back zx29 UART support MIME-Version: 1.0 Content-Type: text/plain; charset="utf-8" Content-Transfer-Encoding: 8bit Message-Id: <20260421-send-v5-6-ace038e63515@gmail.com> References: <20260421-send-v5-0-ace038e63515@gmail.com> In-Reply-To: <20260421-send-v5-0-ace038e63515@gmail.com> To: Jonathan Corbet , Shuah Khan , Russell King , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Arnd Bergmann , Krzysztof Kozlowski , Alexandre Belloni , Linus Walleij , Drew Fustini , Greg Kroah-Hartman , Jiri Slaby Cc: linux-doc@vger.kernel.org, linux-kernel@vger.kernel.org, linux-arm-kernel@lists.infradead.org, devicetree@vger.kernel.org, soc@lists.linux.dev, linux-serial@vger.kernel.org, =?utf-8?q?Stefan_D=C3=B6singer?= X-Mailer: b4 0.14.3 X-Developer-Signature: v=1; a=openpgp-sha256; l=2201; i=stefandoesinger@gmail.com; h=from:subject:message-id; bh=AZZ3BtHPYsdTJleQOEnSYeQu81ZAvH9LguAUd+n0Z5M=; b=owEBiQJ2/ZANAwAIAT0TvMhUTxoiAcsmYgBp59zXHYk8QOPpNQCe1Wwk6mIgsZ2Nv+zsJP4PY KWIaQ2iFOCJAk8EAAEIADkWIQRDFvS2qgVbJ5UyXWw9E7zIVE8aIgUCaefc1xsUgAAAAAAEAA5t YW51MiwyLjUrMS4xMiwyLDIACgkQPRO8yFRPGiKiQg//Zn2a8aaTZQuSyt4cwOh54RlDf15xzdQ txtA7aqXssFF/JqZI7GOWW8JhQFJ7mudZDNWHj53GnkJ+N0efuz+vAmSSM0WzemjCIOv/AjnQfs xM1HLgxBUk+iNuV1IhoEZXRAYHi9kPaZTyIVWJwOSaTK1p25+oHaarMzaw0ha2iuHPDm85HX8Qc pjo7Z4HI7M1cBoHAtMUZNQl1wX+H7QACSGNczRRSUrzBm3N2eieQDrp7LGTCwMKKkKVqQ9EQmSR 2RhVVi4qrzczHyTKhay88YorRUM7oMQBMfmtZ99qfNFpOjEG9P7f8pXklKuvIrDLW33fof3b54U ScQCF5mFC91rEKZFKsUyrK9inaaVV2+BcnvGsvC6uAnR27SNUYupEWKDo1LfFyKwgIc6uYWcfHN ATJP3//SliWsOvAaJOt83pn9Ehw1MiyPRjXpP+bCJFiIzzy148+Xrxu1pcBoE2PVa5OH+uuRXeu dyRui4+9dHU3z1/VY7Bq3GelKMFweEu9+TtAUquxeD//hrOfjKwo+TU94YQxI69V6fGUFm1bp5F yFhtFMKOnxda5r5rQW0WMIKcpI9B3i1kWlysqUnppG2Es8v1fSopis5Rq4jfkBCi6RTgW4gA6MV vSbrrsbXxHTulM9noIeSe9O+3MpHrqXMbGmrnpaBcFBQvEultgIE= X-Developer-Key: i=stefandoesinger@gmail.com; a=openpgp; fpr=4F9C2C8728019633893EBBB98CB81F9A72BBA155 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20260421_132428_210896_ED3C0B79 X-CRM114-Status: GOOD ( 14.38 ) 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 This is based on code removed in commit 89d4f98ae90d ("ARM: remove zte zx platform"). I did not bring back the zx29-uart .compatible as the arm,primecell-periphid does the job. Signed-off-by: Stefan Dösinger --- Changes since v4: Use ZTE's JEDEC ID instead of 0xfe for the DT-Provided AMBA ID. --- drivers/tty/serial/amba-pl011.c | 42 +++++++++++++++++++++++++++++++++++++++++ 1 file changed, 42 insertions(+) diff --git a/drivers/tty/serial/amba-pl011.c b/drivers/tty/serial/amba-pl011.c index 7f17d288c807..f24cc403d9e0 100644 --- a/drivers/tty/serial/amba-pl011.c +++ b/drivers/tty/serial/amba-pl011.c @@ -216,6 +216,38 @@ static struct vendor_data vendor_st = { .get_fifosize = get_fifosize_st, }; +static const u16 pl011_zte_offsets[REG_ARRAY_SIZE] = { + [REG_DR] = ZX_UART011_DR, + [REG_FR] = ZX_UART011_FR, + [REG_LCRH_RX] = ZX_UART011_LCRH, + [REG_LCRH_TX] = ZX_UART011_LCRH, + [REG_IBRD] = ZX_UART011_IBRD, + [REG_FBRD] = ZX_UART011_FBRD, + [REG_CR] = ZX_UART011_CR, + [REG_IFLS] = ZX_UART011_IFLS, + [REG_IMSC] = ZX_UART011_IMSC, + [REG_RIS] = ZX_UART011_RIS, + [REG_MIS] = ZX_UART011_MIS, + [REG_ICR] = ZX_UART011_ICR, + [REG_DMACR] = ZX_UART011_DMACR, +}; + +static unsigned int get_fifosize_zte(struct amba_device *dev) +{ + return 16; +} + +static struct vendor_data vendor_zte = { + .reg_offset = pl011_zte_offsets, + .access_32b = true, + .ifls = UART011_IFLS_RX4_8 | UART011_IFLS_TX4_8, + .fr_busy = ZX_UART01x_FR_BUSY, + .fr_dsr = ZX_UART01x_FR_DSR, + .fr_cts = ZX_UART01x_FR_CTS, + .fr_ri = ZX_UART011_FR_RI, + .get_fifosize = get_fifosize_zte, +}; + /* Deals with DMA transactions */ struct pl011_dmabuf { @@ -3081,6 +3113,16 @@ static const struct amba_id pl011_ids[] = { .mask = 0x00ffffff, .data = &vendor_st, }, + { + /* This is an invented ID. The actual hardware that contains + * these ZTE UARTs (zx29 boards) has no AMBA PIDs stored. ZTE + * JEDEC ID (ignoring banks) and the "011" part number as used + * by ARM. + */ + .id = 0x0008c011, + .mask = 0x000fffff, + .data = &vendor_zte, + }, { 0, 0 }, }; -- 2.53.0