From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-pj1-f46.google.com (mail-pj1-f46.google.com [209.85.216.46]) (using TLSv1.2 with cipher ECDHE-RSA-AES128-GCM-SHA256 (128/128 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 6569B33C1BE for ; Fri, 9 Oct 2026 02:01:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.216.46 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791511275; cv=none; b=CAor5vqPHKX4vasMWlFqY2JDEMP770M9T7ijW6BB2zBSh8BDJQQigU2B32u0ogiAIoexQMj6kdeYGh0k9lIltIovVgmyvvpuRbrwHwMfIbz4eeWRM3mVSN5PE6vaF6l3+ri4Z+YK5VAheNQtL7dxoHFNxmpP3BBuCPJPMkd+lBw= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1791511275; c=relaxed/simple; bh=BF39Imc0aPpJB6sjFuVtuEzAu8i/MJ+OvJYj+kpDXRw=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Fw7y2LWOzgliOY2TOJhfefCfn45eriMXDZ5tgPQF4ZDQv7Ovb9mwc28+l4ZFO73rSO77/B7p+GRvebbL+HVQU9Ifb7o1sPenp7Rib64z4+TUQ7SvUo9O08k8FHoTEqrIoiAB16mM8X9zbsdopmolN9GXV0UuN3tuVUPaDUHMoJk= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com; spf=pass smtp.mailfrom=gmail.com; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b=VijgIgw9; arc=none smtp.client-ip=209.85.216.46 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=gmail.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=gmail.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=gmail.com header.i=@gmail.com header.b="VijgIgw9" Received: by mail-pj1-f46.google.com with SMTP id 98e67ed59e1d1-3a706146559so2745647a91.2 for ; Thu, 08 Oct 2026 19:01:12 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=gmail.com; s=20251104; t=1791511271; x=1792116071; darn=vger.kernel.org; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:from:to:cc:subject:date:message-id:reply-to:content-type; bh=2fDuH5AqlzghdgOw85VEEM3nScrcIHTb70P6L+D1SRk=; b=VijgIgw99PNAoM+VIWgJDLrm8xwBJ4zYVDz3+JjLF62ebs8jVIqNx15Mnyv13FqKok zXdQdO7ve7Bvho5/9YFqpK5NQ1N4+EMs0JrJwIYnL4pS/4kfw/Ugze9KVpH9BvGojYQ7 x2nPe5eiBOYv6lM6PdMBTys/SmdPaUCRoxW34yfhsQqCuV1smWrrPdblMoecRw9LUUjo yWSHFdX5YWa7U1/EIgQHJ3Yx3ufZdTbmLKaMPRquHkTzLXtAg9F8zaQ0zNaO8NZEIhG6 4E7TG73rV+kr/DMDA4h6neYwCi8NsDFqofhrkFSX9DTCRDgeTelm3rwRNgtDtwpuqnXv tk3A== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20260707; t=1791511271; x=1792116071; h=content-transfer-encoding:mime-version:message-id:date:subject:cc :to:from:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=2fDuH5AqlzghdgOw85VEEM3nScrcIHTb70P6L+D1SRk=; b=pTD0OBn37gRtPoDB+JSA1P9bwBu7H91lwPloUms2+DxlveOdHEGhj5EQ+VFhJPnWqN Hhd3ug4t3L6OeCqnCkKiM18KmZGYTevWU3JlIFVkRvgeRX+kN89dlR7ehlcK3mT0kdZJ UlWlE/ZSI3Z8BIoyhQoMnS7IJU5x8/DUuH6bH60yXyf8HmZNEqdQk4W8Hd2yAwa4TSLy bPBc1Uh7DAEnqnv6ED6agC0foDnJpDRR26koBpVlmFf4q5hROjayjLLdHsz0JpPNR7qY yevwGDshB3eifWlkzRgJFyxmMOn1Gi/ZYnRlCXaSCcSJBdUen4ZdKQxRpalghlVGciPN HbzA== X-Forwarded-Encrypted: i=1; AKwUvBxSeNPa5AhdzVoQgDYuKjO0w8MWGPMsrKz5dgdIZhRV16MCDPeSU/Zox/r81/rGrCSmP9WJDt9YTTHi@vger.kernel.org X-Gm-Message-State: AFq9FYJeZ61XakAwDmf2skdcjrVUShokENHsBn/jxlB9gxxWpAaZC7gc EFwYoJKiQj1zz8W7N+NcgGXMu1EVRZXqczz/7HDD2rVtpHjzdI3Iyb/O X-Gm-Gg: AYBFou1YH+y1hWHj7cGDh9+4AJuHLn58+AANh31IxujlfZkTadkoICt9yk/9X2ekT8C PtyWibFCi/shUW2g/aGq2xDrOHfJlKRWFkUZHWqM7mryE1r47HAHNyI6Sy+Wt+GPqUGSPw/vqtK aLSxWuCMkxq1h7hJxTWhHk22GkOwT+f50a4X4vpaSiGQo8ZpMxSoke+1k4gI/UFKuFCDjl8zPso 0GY2sMMDyCQJIPtQ6eEoxyAfs4miLVGE0t7CqVV+jhAcJdRg7cG72mhJ2K/cRxOt0+tk2gFd35K aZYH2iE66EPRC6RjDWC7wLfCMQuKh8jEqZF9fIqMdr6Jtz8sPhFiI+cPbw5v+giyyM4pbeg91h+ vrPq3g2bmysUChj4tRgh6NvXdMKDrd5nZjqhEjJQFmEI/GG5eu+xyIF7qKza4ra2eX9APi34u6j TBuPlWAzoHe6jILT++ZEv/8IqeMPLNOdXEaRYz89qvzLJ1uheCIBXJZXh024sNxvxriTdg8MX6I n5exEU= X-Received: by 2002:a17:90a:e707:b0:3a8:796e:ca18 with SMTP id 98e67ed59e1d1-3ab3ace27f1mr572130a91.59.1791511271485; Thu, 08 Oct 2026 19:01:11 -0700 (PDT) Received: from arch.localdomain ([161.33.202.10]) by smtp.gmail.com with ESMTPSA id 98e67ed59e1d1-3ab38fc9e52sm1095770a91.13.2026.10.08.19.01.07 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Thu, 08 Oct 2026 19:01:11 -0700 (PDT) From: Jun Yan To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Liang Chen Cc: Jun Yan , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH v2] arm64: dts: rockchip: Add dma-names to RK356x UART nodes Date: Fri, 9 Oct 2026 10:01:02 +0800 Message-ID: <20261009020103.364498-1-jerrysteve1101@gmail.com> X-Mailer: git-send-email 2.56.0 Precedence: bulk X-Mailing-List: devicetree@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit The RK356x UART nodes define a dmas property but omit the matching dma-names property, so the 8250 driver fails to request a DMA channel and falls back to PIO, logging: of_dma_request_slave_channel: dma-names property of node '/serial@fe650000' missing or empty Add the missing dma-names = "tx", "rx" to uart0 through uart9, matching other Rockchip SoCs such as the RK3588. Fixes: a3adc0b9071d ("arm64: dts: rockchip: add core dtsi for RK3568 SoC") Signed-off-by: Jun Yan --- Changes in v2: - Add Fixes tag for the commit that introduced the dmas property. v1: https://lore.kernel.org/all/20261008153620.238580-1-jerrysteve1101@gmail.com/ arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 10 ++++++++++ 1 file changed, 10 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi index a5832895bd39..098493c04ecc 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi @@ -443,6 +443,7 @@ uart0: serial@fdd50000 { clocks = <&pmucru SCLK_UART0>, <&pmucru PCLK_UART0>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 0>, <&dmac0 1>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1449,6 +1450,7 @@ uart1: serial@fe650000 { clocks = <&cru SCLK_UART1>, <&cru PCLK_UART1>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 2>, <&dmac0 3>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart1m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1463,6 +1465,7 @@ uart2: serial@fe660000 { clocks = <&cru SCLK_UART2>, <&cru PCLK_UART2>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 4>, <&dmac0 5>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart2m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1477,6 +1480,7 @@ uart3: serial@fe670000 { clocks = <&cru SCLK_UART3>, <&cru PCLK_UART3>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 6>, <&dmac0 7>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart3m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1491,6 +1495,7 @@ uart4: serial@fe680000 { clocks = <&cru SCLK_UART4>, <&cru PCLK_UART4>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 8>, <&dmac0 9>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart4m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1505,6 +1510,7 @@ uart5: serial@fe690000 { clocks = <&cru SCLK_UART5>, <&cru PCLK_UART5>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 10>, <&dmac0 11>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart5m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1519,6 +1525,7 @@ uart6: serial@fe6a0000 { clocks = <&cru SCLK_UART6>, <&cru PCLK_UART6>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 12>, <&dmac0 13>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart6m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1533,6 +1540,7 @@ uart7: serial@fe6b0000 { clocks = <&cru SCLK_UART7>, <&cru PCLK_UART7>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 14>, <&dmac0 15>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart7m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1547,6 +1555,7 @@ uart8: serial@fe6c0000 { clocks = <&cru SCLK_UART8>, <&cru PCLK_UART8>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 16>, <&dmac0 17>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart8m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; @@ -1561,6 +1570,7 @@ uart9: serial@fe6d0000 { clocks = <&cru SCLK_UART9>, <&cru PCLK_UART9>; clock-names = "baudclk", "apb_pclk"; dmas = <&dmac0 18>, <&dmac0 19>; + dma-names = "tx", "rx"; pinctrl-0 = <&uart9m0_xfer>; pinctrl-names = "default"; reg-io-width = <4>; -- 2.56.0