From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from smtp.kernel.org (aws-us-west-2-korg-mail-alma10-1.taild15c8.ts.net [100.103.45.18]) (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 5E1AC396588; Tue, 30 Jun 2026 06:19:12 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=100.103.45.18 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782800353; cv=none; b=aEA9DR5ex+AHsnNNyCoYAcuRjq5iD+ILjq1kOMwg4PTp5K64LMmL8Lhg19Qs6AciQ+b+usBkuuXTB/2L52zfNUiv2OLKM1Htj+RitiNA83nGT4LLphAArXCtdKvim4lrAOjJMyUPtObtiUVU5tGjpDjAC3m2Wy977fJYnodfwC8= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1782800353; c=relaxed/simple; bh=AqDsct3vg4EkmYvjIthGbbEt5EqA+5w5suFL1b5gJpY=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=b8A2/TtxHAH7dsdDl1Ns1S3YqDapFeNaceuToVvGpf60Olq/fWY877wUj5UUHbTkXl9RXyTQmEsHEQ6qTzdgq7+9L06mkOtI3XpjTxExWQtLLiyYJ73RoUczMCDVOyZtkpjYMeZ5gkC/WCRPfXVCXmHwWYkJZAxJlQuAESHsxC4= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b=Vw6R5LKp; arc=none smtp.client-ip=100.103.45.18 Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=kernel.org header.i=@kernel.org header.b="Vw6R5LKp" Received: by smtp.kernel.org (Postfix) with ESMTPSA id CA4571F000E9; Tue, 30 Jun 2026 06:19:00 +0000 (UTC) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=kernel.org; s=k20260515; t=1782800352; bh=qMiG0Alun6q3tS0Lfxy2DZB8LH3E6RU8IaYzZ98kJPE=; h=Date:Subject:To:Cc:References:From:In-Reply-To; b=Vw6R5LKpATzPgLliEKZ19Q0EtU7HZ8sYgi1WTs+y/db48PlO5fs4EtFmRoRoxbFVm XYZi81/r7Ii13cvqVFEfXFWSpC3mCeCSpOsYsnr5+NX+7Gt8+ncMroeu85FUkVjfs6 tq/bejYQIVxnmrQQvn9nPp8OBObmN3as+2VQ7desYE3KQEqyyGYPCnHxhFu5Ed3dDk L98PTPEtODX/IIBBxTmniLus/0z6YSCd1lXegOi0UBabLOa1Q1TE4ucLX7eYrME11a +E9t1LvZsKXCWVFvKnSgnhyZIPj69IOM49bxhxpqVopnnl6tP97fSjgijBTLWuVCB+ pE8pbibs5Yr4w== Message-ID: <976ad3b4-ada5-4fc0-8fba-97eb172ede91@kernel.org> Date: Tue, 30 Jun 2026 08:18:56 +0200 Precedence: bulk X-Mailing-List: netdev@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 4/6] dt-bindings: net: bluetooth: Document Qualcomm IPQ5018 Bluetooth controller To: Konrad Dybcio , George Moussalem Cc: Jens Axboe , Ulf Hansson , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Johannes Berg , Jeff Johnson , Bartosz Golaszewski , Marcel Holtmann , Luiz Augusto von Dentz , Balakrishna Godavarthi , Rocky Liao , Saravana Kannan , Andrew Lunn , Heiner Kallweit , Russell King , "David S. Miller" , Eric Dumazet , Jakub Kicinski , Paolo Abeni , Simon Horman , Bjorn Andersson , Konrad Dybcio , Mathieu Poirier , Philipp Zabel , linux-block@vger.kernel.org, linux-kernel@vger.kernel.org, linux-mmc@vger.kernel.org, devicetree@vger.kernel.org, linux-wireless@vger.kernel.org, ath10k@lists.infradead.org, linux-arm-msm@vger.kernel.org, linux-bluetooth@vger.kernel.org, netdev@vger.kernel.org, linux-remoteproc@vger.kernel.org References: <20260625-ipq5018-bluetooth-v1-0-d999be0e04f7@outlook.com> <20260625-ipq5018-bluetooth-v1-4-d999be0e04f7@outlook.com> <20260626-discerning-light-swan-6b599c@quoll> <0e0fb3af-968f-46d2-be6c-18b76c7d2a1a@oss.qualcomm.com> From: Krzysztof Kozlowski Content-Language: en-US Autocrypt: addr=krzk@kernel.org; keydata= xsFNBFVDQq4BEAC6KeLOfFsAvFMBsrCrJ2bCalhPv5+KQF2PS2+iwZI8BpRZoV+Bd5kWvN79 cFgcqTTuNHjAvxtUG8pQgGTHAObYs6xeYJtjUH0ZX6ndJ33FJYf5V3yXqqjcZ30FgHzJCFUu JMp7PSyMPzpUXfU12yfcRYVEMQrmplNZssmYhiTeVicuOOypWugZKVLGNm0IweVCaZ/DJDIH gNbpvVwjcKYrx85m9cBVEBUGaQP6AT7qlVCkrf50v8bofSIyVa2xmubbAwwFA1oxoOusjPIE J3iadrwpFvsZjF5uHAKS+7wHLoW9hVzOnLbX6ajk5Hf8Pb1m+VH/E8bPBNNYKkfTtypTDUCj NYcd27tjnXfG+SDs/EXNUAIRefCyvaRG7oRYF3Ec+2RgQDRnmmjCjoQNbFrJvJkFHlPeHaeS BosGY+XWKydnmsfY7SSnjAzLUGAFhLd/XDVpb1Een2XucPpKvt9ORF+48gy12FA5GduRLhQU vK4tU7ojoem/G23PcowM1CwPurC8sAVsQb9KmwTGh7rVz3ks3w/zfGBy3+WmLg++C2Wct6nM Pd8/6CBVjEWqD06/RjI2AnjIq5fSEH/BIfXXfC68nMp9BZoy3So4ZsbOlBmtAPvMYX6U8VwD TNeBxJu5Ex0Izf1NV9CzC3nNaFUYOY8KfN01X5SExAoVTr09ewARAQABzSVLcnp5c3p0b2Yg S296bG93c2tpIDxrcnprQGtlcm5lbC5vcmc+wsGPBBMBCgA5AhsDBgsJCAcDAgYVCAIJCgsE FgIDAQIeAQIXgBYhBJvQfg4MUfjVlne3VBuTQ307QWKbBQJp2mE8AAoJEBuTQ307QWKbeaIP /ihHTkTW4KsN/DQ945JJbyu5tI0J80Wue7QyyLPglyKfhgb5cLLNPpOC8cCIJsc7+W3i2P38 s2c1cOH6CYGE7E9ur3Vfme8NW2S2I/Z8VC7bZnzyS23wT17LrsdS/qCpx4o8U+pt/xdXDKph EGRYrIEmMpUWvyYzyYKGIe25FtaayIIKpq8eZYyFcp2f/sG5IkOW5uZzHPMPdcm87jU7fyuQ rAU2vx9r+ulUfQ/q9Z2roC/ode3l7t2pN7BCBCsUDp6JCrUyZrtT1e7EbA0ZRP3aOBNk2P2E DQOgJGjGdO5Yx2Y9LFtltu6JbsBJHi1syGRX3AtQYOMc4Y1WGoeZJmMlvKj2ZqqXNkcWi2DS IQEWB0uW6CqFsBBIMGDa+6OzdaVO/uAVXWDWml02Men3CILdI1MbVjoh8ECqYUY7OQ+JJvNN vnliuq5WM3Ghd3jg/LZZrxXjdIginRHFQCjIJYLKpLZWm1/iDFedcfzqRNYmTtqscdCNHW41 oT3Z7BmO9xwdjuwBS6nmS6JJwkbf5Ot2QR4pB/DRU7ZwjT1qHe+9r9gF32wXVQatHNGK/VVu sfwOnkdxCWkp/qb2gdQRmZh+SedStWshigH6sNfuHBloF/q+hjMRc8b2m326OZdrbSHwY1Sz vti8Hn7n8NjdHO9LKB7BIdjkA9DA5WsqOuVCzsFNBFVDXDQBEADNkrQYSREUL4D3Gws46JEo Z9HEQOKtkrwjrzlw/tCmqVzERRPvz2Xg8n7+HRCrgqnodIYoUh5WsU84N03KlLueMNsWLJBv BaubYN4JuJIdRr4dS4oyF1/fQAQPHh8Thpiz0SAZFx6iWKB7Qrz3OrGCjTPcW6eiOMheesVS 5hxietSmlin+SilmIAPZHx7n242u6kdHOh+/SyLImKn/dh9RzatVpUKbv34eP1wAGldWsRxb f3WP9pFNObSzI/Bo3kA89Xx2rO2roC+Gq4LeHvo7ptzcLcrqaHUAcZ3CgFG88CnA6z6lBZn0 WyewEcPOPdcUB2Q7D/NiUY+HDiV99rAYPJztjeTrBSTnHeSBPb+qn5ZZGQwIdUW9YegxWKvX XHTwB5eMzo/RB6vffwqcnHDoe0q7VgzRRZJwpi6aMIXLfeWZ5Wrwaw2zldFuO4Dt91pFzBSO IpeMtfgb/Pfe/a1WJ/GgaIRIBE+NUqckM+3zJHGmVPqJP/h2Iwv6nw8U+7Yyl6gUBLHFTg2h YnLFJI4Xjg+AX1hHFVKmvl3VBHIsBv0oDcsQWXqY+NaFahT0lRPjYtrTa1v3tem/JoFzZ4B0 p27K+qQCF2R96hVvuEyjzBmdq2esyE6zIqftdo4MOJho8uctOiWbwNNq2U9pPWmu4vXVFBYI GmpyNPYzRm0QPwARAQABwsF2BBgBCgAgAhsMFiEEm9B+DgxR+NWWd7dUG5NDfTtBYpsFAmna YUkACgkQG5NDfTtBYptX+BAApg32CkxwNucNEi8WfWA8oKkW0y8YDuY6ORMo9FWNGiT/OTy0 vyJrLocrpn86zwfjVp+eCrssPYh8eqJfnWqmYv6ACQtHPYzPZQ3mSo8H97Z01oUxITzCxpXm ZkLgPIqtDPcC2E3dPM/fVxcyowM8XsaMA9wcsaUYrta8toOq2b9tKcjleKMfMrm0gQ9u7wUc QbLkwj6TCLOwucb07GXzLTNF9PZmaDUpKAZjMjmrW+le+SFvQbhamx0rxLWPR0NWntXpbCn+ +ACch03p/JyTBVktxFsFyCt7pTPE1kEaeuXBTe/a2D9iQvRxRW19LvuO2e59/u1wYUiH/orz wbIC2S4dBsPAPihL3ztOU1yE86GPyQtSE0kU+/7snnLt4QGi6PChf3t5gnNjAzjUUovO8rgI c+5yN5heq5loYHgK6OQ9OlHzsPHO9e9MOQcKlFycs1pyijFGzDwdNUm/SchK8iWT2QApTx4A K9bCVaboTA2T77QYkRcRJYSsO1alGX0ome/hMLD1daXlkrNUp1HWa3K4iytLRXjCSIorWiGs n+q3krnpXu3TFkA8qtOFZMdnIiFuiq1yLT8hptsV5xh1TA2nsVvSYiaCr3q4s4BKjS/KrLDb qoxzw8ISjdUp4pA85vb6YLCmb39NgidD+7PmAr65lBNveIFynTgsja1rRQ4= In-Reply-To: <0e0fb3af-968f-46d2-be6c-18b76c7d2a1a@oss.qualcomm.com> Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 26/06/2026 13:30, Konrad Dybcio wrote: > On 6/26/26 1:20 PM, George Moussalem wrote: >> On 6/26/26 14:53, Krzysztof Kozlowski wrote: >>> On Thu, Jun 25, 2026 at 06:10:08PM +0400, George Moussalem wrote: >>>> Document the Qualcomm IPQ5018 Bluetooth controller. >>>> >>>> Signed-off-by: George Moussalem >>>> --- > > [...] > >>>> + compatible = "qcom,ipq5018-bt"; >>>> + >>>> + qcom,ipc = <&apcs_glb 8 23>; >>>> + interrupts = ; >>> >>> No firmware to load? >> >> firmware is loaded by the remoteproc in patch 1 >> >>> >>> It feels like remoteproc node split is fake. The property qcom,rproc is >>> even more supporting that case. Shouldn't this be simply one device - >>> bluetooth? What sort of two devices do you have exactly? How can I >>> identify them in the hardware? >> >> I wasn't sure how to represent the HW. Should I make this bluetooth node >> a childnode of the rproc? Essentially, this is the transport layer >> (using shared memory space and IPC/interrupt). >> >> Most QCA BT controllers are also childnodes of a serdev/uart node as >> they use serdev for transport. >> >> From what I understand, it's simply BT firmware running on this >> dedicated M0 core in the SoC itself connected to an RF. > > Seems like this rhymes with the WPSS remoteproc +ATH1xK_AHB situation > - the Q6 core power sequences and manages the wireless controller, > while Linux gets to drive the device as it would if it were connected > over PCIe/ UART respectively, just with MMIO writes instead. But the ATH (except the MMIO for remoteproc bringup) are physically connected over other bus, like PCIe and UART. What is here? Best regards, Krzysztof