From nobody Thu Oct 2 13:03:45 2025 Received: from mail1.nippynetworks.com (mail1.nippynetworks.com [91.220.24.129]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id C756A34AAF1; Wed, 17 Sep 2025 11:51:31 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=91.220.24.129 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758109893; cv=none; b=es6l7i3yD7WuDi8C36xtZ1pyJ9xXcc6EdYcquTvKaX1BTxcaEc2DcQqgTbTLMgsgsVnShb3ihapz3NFZtF9zXaah4GF/n9G+mDaq0Ni3XoCI7slxcIrQBmzKOOGetiRzLouSwTfQLugth+qA824NrdG+YACgXbO8Z0QHNIFvKCg= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1758109893; c=relaxed/simple; bh=YROZrb4qm7aQw+ORnAcXurjrsYXoyTb1RNcMG1YUdtQ=; h=From:To:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=dBvtufiPTasm04cQhunHSTfFDNlpZriu4iw9sjT3Xfjv7DHRwRCHFhtm+sJwkZthYStyIJ6oTLMDVZCs0wPc5vH463BUcwB1nNwYbj6aMAY4Za+5yCi87ZFQg5rNblKgjvQukKl2P5j4Or0yyK+ExCdeII9s4kgqDM8My8oFPPo= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wildgooses.com; spf=pass smtp.mailfrom=wildgooses.com; dkim=pass (1024-bit key) header.d=wildgooses.com header.i=@wildgooses.com header.b=bi/dQE+5; arc=none smtp.client-ip=91.220.24.129 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=wildgooses.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=wildgooses.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (1024-bit key) header.d=wildgooses.com header.i=@wildgooses.com header.b="bi/dQE+5" Received: from grunt.nippynetworks.lan (unknown [94.228.36.46]) (using TLSv1.3 with cipher TLS_AES_256_GCM_SHA384 (256/256 bits) key-exchange ECDHE (P-256) server-signature ECDSA (P-256) server-digest SHA256) (No client certificate requested) (Authenticated sender: lists@wildgooses.com) by mail1.nippynetworks.com (Postfix) with ESMTPSA id 4cRcYY3dbvzkd2w; Wed, 17 Sep 2025 12:51:29 +0100 (BST) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=wildgooses.com; s=dkim; t=1758109889; h=from:from:reply-to:subject:subject:date:date:message-id:message-id: to:to:cc:mime-version:mime-version: content-transfer-encoding:content-transfer-encoding: in-reply-to:in-reply-to:references:references; bh=3FCcXXM9l7ILpFzqFtjvNKikZTyNEREOH8NytkDV5b4=; b=bi/dQE+5W/WC5AbtWSIh5zzd/w2Pv6MG4i27td2c5fN8P4GOIQFNGPb1RlByU73e2Ql7yO juSdNoFPCA18pmdrY0YHyA07bt4CIdBWLI/VdpFw9P+Xy8NqLh8qbCUJSgqpCglsy4OabM 3RLo56ROxq0sBj7TVFqlMx11y8fXFrI= From: Ed Wildgoose To: Rob Herring , Krzysztof Kozlowski , Conor Dooley , Heiko Stuebner , Ed Wildgoose , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-rockchip@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH 2/2] rockchip: dts: Enable UART DMA by adding default dma-names property Date: Wed, 17 Sep 2025 11:49:31 +0000 Message-ID: <20250917114932.25994-3-lists@wildgooses.com> X-Mailer: git-send-email 2.49.0 In-Reply-To: <20250917114932.25994-1-lists@wildgooses.com> References: <20250917114932.25994-1-lists@wildgooses.com> Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: quoted-printable Content-Type: text/plain; charset="utf-8" Kernel appears to need a dma-names set for DMA to actually enable. Set a default dma-names property for all UARTs defined in the base rk356x-base dtsi This is tested on a Radxa Zero 3W (which has 5x UARTs) and removes the warnings and enables DMA on this platform Signed-off-by: Ed Wildgoose --- arch/arm64/boot/dts/rockchip/rk356x-base.dtsi | 9 +++++++++ 1 file changed, 9 insertions(+) diff --git a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi b/arch/arm64/boo= t/dts/rockchip/rk356x-base.dtsi index fd2214b6f..55240f76d 100644 --- a/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk356x-base.dtsi @@ -1334,6 +1334,7 @@ uart1: serial@fe650000 { clocks =3D <&cru SCLK_UART1>, <&cru PCLK_UART1>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 2>, <&dmac0 3>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart1m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1348,6 +1349,7 @@ uart2: serial@fe660000 { clocks =3D <&cru SCLK_UART2>, <&cru PCLK_UART2>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 4>, <&dmac0 5>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart2m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1362,6 +1364,7 @@ uart3: serial@fe670000 { clocks =3D <&cru SCLK_UART3>, <&cru PCLK_UART3>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 6>, <&dmac0 7>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart3m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1376,6 +1379,7 @@ uart4: serial@fe680000 { clocks =3D <&cru SCLK_UART4>, <&cru PCLK_UART4>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 8>, <&dmac0 9>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart4m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1390,6 +1394,7 @@ uart5: serial@fe690000 { clocks =3D <&cru SCLK_UART5>, <&cru PCLK_UART5>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 10>, <&dmac0 11>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart5m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1404,6 +1409,7 @@ uart6: serial@fe6a0000 { clocks =3D <&cru SCLK_UART6>, <&cru PCLK_UART6>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 12>, <&dmac0 13>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart6m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1418,6 +1424,7 @@ uart7: serial@fe6b0000 { clocks =3D <&cru SCLK_UART7>, <&cru PCLK_UART7>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 14>, <&dmac0 15>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart7m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1432,6 +1439,7 @@ uart8: serial@fe6c0000 { clocks =3D <&cru SCLK_UART8>, <&cru PCLK_UART8>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 16>, <&dmac0 17>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart8m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; @@ -1446,6 +1454,7 @@ uart9: serial@fe6d0000 { clocks =3D <&cru SCLK_UART9>, <&cru PCLK_UART9>; clock-names =3D "baudclk", "apb_pclk"; dmas =3D <&dmac0 18>, <&dmac0 19>; + dma-names =3D "tx", "rx"; pinctrl-0 =3D <&uart9m0_xfer>; pinctrl-names =3D "default"; reg-io-width =3D <4>; --=20 2.49.0