From nobody Fri Dec 19 19:20:05 2025 Received: from smtp.forwardemail.net (smtp.forwardemail.net [121.127.44.73]) (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 C75F121A92F for ; Wed, 9 Jul 2025 21:08:41 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=121.127.44.73 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752095324; cv=none; b=GPI2wkxFdAsTFJ/WP3R683KsVTukeCquzImchsA9V4p4rBWBE1kA6UYbL1hvv73m1W1tPPp0Na6VcYpzIiblWgwpOUYtOwuFqMSw79YmnG9cJ5NJ4i2rVRDi2QuijMTSGLhZsHQFouSXHmx8EQCJd+0WkwjbyKNizo935wdby3o= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1752095324; c=relaxed/simple; bh=/sPHUll0HVA/zIYX4UgOh3ke6kfWHMxnpwreuceuMeE=; h=From:To:Cc:Subject:Date:Message-ID:MIME-Version; b=Mc5tM1Ifp1z8OzxKafQcFj4f4B5jluuuDUAu+PgxiR6AYyXwrbZZfKe8NEt65ejhvwTFQYNeNhYbC0DC9riAtHHGYdwOzzBJvmSXHGIOIkeBQHcYLSryqfp3ZsTfj5jivgsMrAxWWhMcZ9xSVVcXR8Bzdg/TyxMT0FN+VsZGR6o= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kwiboo.se; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b=F1nQVyAE; arc=none smtp.client-ip=121.127.44.73 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=none dis=none) header.from=kwiboo.se Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=fe-bounces.kwiboo.se Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kwiboo.se header.i=@kwiboo.se header.b="F1nQVyAE" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kwiboo.se; h=Content-Transfer-Encoding: MIME-Version: Message-ID: Date: Subject: Cc: To: From; q=dns/txt; s=fe-e1b5cab7be; t=1752095321; bh=yLPdjZGdoWUbTfAy2GwqZq8+x71kvvXbnWtl1wzXyRk=; b=F1nQVyAE0MXjmaRM9CJomt9wiM5mgfw+uVBEc9jJuhZ1/vGctTd1Kd25tgDk6qYds8PF0IM8o U5jaTPMi9pQ9LYsFoUM+4jfsW/a5tq5pN+j28pK7cN5Q0YuetKVQH8Tp5jOnUhA96bFl1UYcu9E /Agoiv2VoYyg8Uhqp2dq3zRdqoAblBvCNYY8u5NXesBAiam74lYpuXSfibtCE7E5IE99Ev3V66D QW29496d7KUC6DKTPrjuyNV9gDgNVaoUtrwU99JEFD8oN31EPWXPbBUr15HNKU4qQO+k3nAzGxj 0/SrfwEKJAVJQNWa1yTrqHzlR2+J4mmpqWVAanrUKvGA== X-Forward-Email-ID: 686eda55c4bb2e061789d0d3 X-Forward-Email-Sender: rfc822; jonas@kwiboo.se, smtp.forwardemail.net, 121.127.44.73 X-Forward-Email-Version: 1.1.3 X-Forward-Email-Website: https://forwardemail.net X-Complaints-To: abuse@forwardemail.net X-Report-Abuse: abuse@forwardemail.net X-Report-Abuse-To: abuse@forwardemail.net From: Jonas Karlman To: Heiko Stuebner , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Chukun Pan Cc: Yao Zi , linux-rockchip@lists.infradead.org, Jonas Karlman , devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, linux-kernel@vger.kernel.org Subject: [PATCH] arm64: dts: rockchip: Fix UART DMA support for RK3528 Date: Wed, 9 Jul 2025 21:08:28 +0000 Message-ID: <20250709210831.3170458-1-jonas@kwiboo.se> X-Mailer: git-send-email 2.49.0 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" Trying to use UART2 DMA for Bluetooth on ArmSoM Sige1 result in tx timeout when using dma-names =3D "tx", "rx" as required by the dt-binding: Bluetooth: hci0: command 0x0c03 tx timeout Bluetooth: hci0: BCM: Reset failed (-110) Change the dmas order to fix UART DMA support on RK3528. With this fixed Bluetooth can be loaded using DMA on ArmSoM Sige1: Bluetooth: hci0: BCM: chip id 159 Bluetooth: hci0: BCM: features 0x0f Bluetooth: hci0: BCM4362A2 Bluetooth: hci0: BCM4362A2 (000.017.017) build 0000 Bluetooth: hci0: BCM4362A2 'brcm/BCM4362A2.hcd' Patch Bluetooth: hci0: BCM: features 0x0f Bluetooth: hci0: BCM43752A2 UART 37.4MHz Ampak AP6398 sLNA iLNA CL1 [Vers= ion: 1091.1173] Bluetooth: hci0: BCM4362A2 (000.017.017) build 1173 Fixes: ab6fcb58aedf ("arm64: dts: rockchip: Add UART DMA support for RK3528= ") Signed-off-by: Jonas Karlman --- This can be verified with an upcoming v2 of "arm64: dts: rockchip: Add ArmSoM Sige1" [1]. [1] https://lore.kernel.org/r/20250708224921.2254116-5-jonas@kwiboo.se --- arch/arm64/boot/dts/rockchip/rk3528.dtsi | 16 ++++++++-------- 1 file changed, 8 insertions(+), 8 deletions(-) diff --git a/arch/arm64/boot/dts/rockchip/rk3528.dtsi b/arch/arm64/boot/dts= /rockchip/rk3528.dtsi index b215126efcc2..001a555c83b7 100644 --- a/arch/arm64/boot/dts/rockchip/rk3528.dtsi +++ b/arch/arm64/boot/dts/rockchip/rk3528.dtsi @@ -595,7 +595,7 @@ uart0: serial@ff9f0000 { clocks =3D <&cru SCLK_UART0>, <&cru PCLK_UART0>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 8>, <&dmac 9>; + dmas =3D <&dmac 9>, <&dmac 8>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -607,7 +607,7 @@ uart1: serial@ff9f8000 { clocks =3D <&cru SCLK_UART1>, <&cru PCLK_UART1>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 10>, <&dmac 11>; + dmas =3D <&dmac 11>, <&dmac 10>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -619,7 +619,7 @@ uart2: serial@ffa00000 { clocks =3D <&cru SCLK_UART2>, <&cru PCLK_UART2>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 12>, <&dmac 13>; + dmas =3D <&dmac 13>, <&dmac 12>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -631,7 +631,7 @@ uart3: serial@ffa08000 { clocks =3D <&cru SCLK_UART3>, <&cru PCLK_UART3>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 14>, <&dmac 15>; + dmas =3D <&dmac 15>, <&dmac 14>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -643,7 +643,7 @@ uart4: serial@ffa10000 { clocks =3D <&cru SCLK_UART4>, <&cru PCLK_UART4>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 16>, <&dmac 17>; + dmas =3D <&dmac 17>, <&dmac 16>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -655,7 +655,7 @@ uart5: serial@ffa18000 { clocks =3D <&cru SCLK_UART5>, <&cru PCLK_UART5>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 18>, <&dmac 19>; + dmas =3D <&dmac 19>, <&dmac 18>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -667,7 +667,7 @@ uart6: serial@ffa20000 { clocks =3D <&cru SCLK_UART6>, <&cru PCLK_UART6>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 20>, <&dmac 21>; + dmas =3D <&dmac 21>, <&dmac 20>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; @@ -679,7 +679,7 @@ uart7: serial@ffa28000 { clocks =3D <&cru SCLK_UART7>, <&cru PCLK_UART7>; clock-names =3D "baudclk", "apb_pclk"; interrupts =3D ; - dmas =3D <&dmac 22>, <&dmac 23>; + dmas =3D <&dmac 23>, <&dmac 22>; reg-io-width =3D <4>; reg-shift =3D <2>; status =3D "disabled"; --=20 2.49.0