From patchwork Tue Oct 15 12:14:43 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Amelie Delaunay X-Patchwork-Id: 13836303 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 043E0D21683 for ; Tue, 15 Oct 2024 12:18:01 +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=KFc5UtMsTxPLpZ5ZNu4v4Ik5v+Rez2xhUaWk/edfOo0=; b=UniAH9BA5pKmp2XMiuFA/Fm4eX Fb3cvjnqA2t7b0sPB5w3gxwmrFk3C92PJ05Nse3t15FHfRZ3sQqENeuGoTsOQUer40B4cjPfEOSnL fWBmHYzqLqZ1DwBX+Dh1cwBHCqxSl2XM5eJj9oPdkeFNoNXTsENMY6cdAaSbXwEaysAmbHgKPq0gK b+4BkqLImjOeJhgGlw4Ts1A1zBufjZ5f4Fvjs7Mu7tks7Eg0hw8+6rlt4Q6uaZk+joAEAIpPGcfaK V26CgO7C+e5w02hpRcigbaw4ej5KaW+lnjEg3NdLU43ZHGYAHQzJwNSUsxadHoUYYTc74ZDOAqdUI LylER6Yg==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.98 #2 (Red Hat Linux)) id 1t0gUj-000000088Gn-3G2P; Tue, 15 Oct 2024 12:17:45 +0000 Received: from mx07-00178001.pphosted.com ([185.132.182.106]) by bombadil.infradead.org with esmtps (Exim 4.98 #2 (Red Hat Linux)) id 1t0gTG-000000087rS-3frI for linux-arm-kernel@lists.infradead.org; Tue, 15 Oct 2024 12:16:16 +0000 Received: from pps.filterd (m0288072.ppops.net [127.0.0.1]) by mx07-00178001.pphosted.com (8.18.1.2/8.18.1.2) with ESMTP id 49FBaDcE005320; Tue, 15 Oct 2024 14:16:04 +0200 DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=foss.st.com; h= cc:content-transfer-encoding:content-type:date:from:in-reply-to :message-id:mime-version:references:subject:to; s=selector1; bh= KFc5UtMsTxPLpZ5ZNu4v4Ik5v+Rez2xhUaWk/edfOo0=; b=nqu3hTXr6r7bjSrJ ztprP45TL35S7hlVb0vFHayMy4g7UO9fEqX+I0/ZBK/Z6UaqLsL5JGJltaSQTkDe 2DIFD5leA6WIoySXIt6lrkSgvRgX8AVTNO+LDjYaNmWG7aeNi5DNJ4pBENxtIW71 wQgpbTL+VhQgcZBeV2Qo0cPvM4YqY3PoDVGsVkpfp55p+tbLLGXcbcrIDlgBL4QK bfqBPsFk8m81Er21y12TsG0EYarliLxtamoN7sR8B98f27T0i9+fwURJyCe3djzq PLyUth+yTO+/NqY9A460wg12RomJelUhUTpHeLEOgF/Ne9XyaBqlDlQu2xP46xFs 1t544w== Received: from beta.dmz-ap.st.com (beta.dmz-ap.st.com [138.198.100.35]) by mx07-00178001.pphosted.com (PPS) with ESMTPS id 427ehg5n7t-1 (version=TLSv1.2 cipher=ECDHE-RSA-AES256-GCM-SHA384 bits=256 verify=NOT); Tue, 15 Oct 2024 14:16:04 +0200 (MEST) Received: from euls16034.sgp.st.com (euls16034.sgp.st.com [10.75.44.20]) by beta.dmz-ap.st.com (STMicroelectronics) with ESMTP id D1BEC40050; Tue, 15 Oct 2024 14:15:07 +0200 (CEST) Received: from Webmail-eu.st.com (shfdag1node3.st.com [10.75.129.71]) by euls16034.sgp.st.com (STMicroelectronics) with ESMTP id 8A13A222CB7; Tue, 15 Oct 2024 14:14:51 +0200 (CEST) Received: from localhost (10.48.87.35) by SHFDAG1NODE3.st.com (10.75.129.71) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.37; Tue, 15 Oct 2024 14:14:51 +0200 From: Amelie Delaunay Date: Tue, 15 Oct 2024 14:14:43 +0200 Subject: [PATCH v2 7/9] arm64: dts: st: add DMA support on U(S)ART instances of stm32mp25 MIME-Version: 1.0 Message-ID: <20241015-dma3-mp25-updates-v2-7-b63e21556ec8@foss.st.com> References: <20241015-dma3-mp25-updates-v2-0-b63e21556ec8@foss.st.com> In-Reply-To: <20241015-dma3-mp25-updates-v2-0-b63e21556ec8@foss.st.com> To: Vinod Koul , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Maxime Coquelin , Alexandre Torgue CC: , , , , , Amelie Delaunay X-Mailer: b4 0.14.2 X-Originating-IP: [10.48.87.35] X-ClientProxiedBy: EQNCAS1NODE4.st.com (10.75.129.82) To SHFDAG1NODE3.st.com (10.75.129.71) X-Proofpoint-Virus-Version: vendor=baseguard engine=ICAP:2.0.293,Aquarius:18.0.1039,Hydra:6.0.680,FMLib:17.12.60.29 definitions=2024-09-06_09,2024-09-06_01,2024-09-02_01 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20241015_051615_623127_5F783D54 X-CRM114-Status: UNSURE ( 9.10 ) X-CRM114-Notice: Please train this message. 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 Add dmas and dma-names properties in u(s)art nodes of stm32mp251.dtsi to enable DMA support. RX channel requires to prevent pack/unpack feature of DMA to avoid losing bytes when interrupting RX transfer, as it uses a cyclic buffer. Signed-off-by: Amelie Delaunay --- arch/arm64/boot/dts/st/stm32mp251.dtsi | 27 +++++++++++++++++++++++++++ arch/arm64/boot/dts/st/stm32mp257f-ev1.dts | 2 ++ 2 files changed, 29 insertions(+) diff --git a/arch/arm64/boot/dts/st/stm32mp251.dtsi b/arch/arm64/boot/dts/st/stm32mp251.dtsi index 1167cf63d7e87aaa15c5c1ed70a9f6511fd818d4..9035fc7ba4857ca98a1a86246d7d0250196b2a13 100644 --- a/arch/arm64/boot/dts/st/stm32mp251.dtsi +++ b/arch/arm64/boot/dts/st/stm32mp251.dtsi @@ -266,6 +266,9 @@ usart2: serial@400e0000 { reg = <0x400e0000 0x400>; interrupts = ; clocks = <&rcc CK_KER_USART2>; + dmas = <&hpdma 11 0x20 0x10012>, + <&hpdma 12 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 32>; status = "disabled"; }; @@ -275,6 +278,9 @@ usart3: serial@400f0000 { reg = <0x400f0000 0x400>; interrupts = ; clocks = <&rcc CK_KER_USART3>; + dmas = <&hpdma 13 0x20 0x10012>, + <&hpdma 14 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 33>; status = "disabled"; }; @@ -284,6 +290,9 @@ uart4: serial@40100000 { reg = <0x40100000 0x400>; interrupts = ; clocks = <&rcc CK_KER_UART4>; + dmas = <&hpdma 15 0x20 0x10012>, + <&hpdma 16 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 34>; status = "disabled"; }; @@ -293,6 +302,9 @@ uart5: serial@40110000 { reg = <0x40110000 0x400>; interrupts = ; clocks = <&rcc CK_KER_UART5>; + dmas = <&hpdma 17 0x20 0x10012>, + <&hpdma 18 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 35>; status = "disabled"; }; @@ -393,6 +405,9 @@ usart6: serial@40220000 { reg = <0x40220000 0x400>; interrupts = ; clocks = <&rcc CK_KER_USART6>; + dmas = <&hpdma 19 0x20 0x10012>, + <&hpdma 20 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 36>; status = "disabled"; }; @@ -438,6 +453,9 @@ uart9: serial@402c0000 { reg = <0x402c0000 0x400>; interrupts = ; clocks = <&rcc CK_KER_UART9>; + dmas = <&hpdma 25 0x20 0x10012>, + <&hpdma 26 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 39>; status = "disabled"; }; @@ -447,6 +465,9 @@ usart1: serial@40330000 { reg = <0x40330000 0x400>; interrupts = ; clocks = <&rcc CK_KER_USART1>; + dmas = <&hpdma 9 0x20 0x10012>, + <&hpdma 10 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 31>; status = "disabled"; }; @@ -480,6 +501,9 @@ uart7: serial@40370000 { reg = <0x40370000 0x400>; interrupts = ; clocks = <&rcc CK_KER_UART7>; + dmas = <&hpdma 21 0x20 0x10012>, + <&hpdma 22 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 37>; status = "disabled"; }; @@ -489,6 +513,9 @@ uart8: serial@40380000 { reg = <0x40380000 0x400>; interrupts = ; clocks = <&rcc CK_KER_UART8>; + dmas = <&hpdma 23 0x20 0x10012>, + <&hpdma 24 0x20 0x3021>; + dma-names = "rx", "tx"; access-controllers = <&rifsc 38>; status = "disabled"; }; diff --git a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts index 214191a8322b81e7ae453503863b4465d9b625e0..d468dcbe849680de812a0ddd593f30cbf507f645 100644 --- a/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts +++ b/arch/arm64/boot/dts/st/stm32mp257f-ev1.dts @@ -157,6 +157,8 @@ &usart2 { pinctrl-0 = <&usart2_pins_a>; pinctrl-1 = <&usart2_idle_pins_a>; pinctrl-2 = <&usart2_sleep_pins_a>; + /delete-property/dmas; + /delete-property/dma-names; status = "okay"; };