From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail-ot1-f45.google.com (mail-ot1-f45.google.com [209.85.210.45]) (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 6FF5248A2A6 for ; Tue, 14 Jul 2026 14:44:24 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=209.85.210.45 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784040271; cv=none; b=LVpcGjVzWjrRjN1dNyyG8x9A8KcpQtU5bOQ9rHuZodE3C4Vqy7rFbHemc0B9Bk5KlAOjZKLnJMtG/5l1lDaezXcyuREMagBqFD8bRQsKscfybhgIL8WPFPO3lXolwLIj60sJnFGpfGGNJPVZC/pKbM1Xg56vphnNQ7zqfJD6B2s= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1784040271; c=relaxed/simple; bh=F/Jgys+2iHUqANEe/A3sYIopmphNNvPEymGZjONdPpk=; h=Message-ID:Date:MIME-Version:Subject:To:Cc:References:From: In-Reply-To:Content-Type; b=swxTls8jzOo/LgeFFhKcXfw9M3PqRwcRX9sfLrgK8f9uJ8dDS7gS2guWl780wpVDoayZEeOPGWW5oQUHwbodU8ZUU1RFFeQbm9TSbS6f5CY748tO8yMA1V4/9dKLaMwx3hXCkZd2GlzU60zEIsM6qacnp2T2t5+E5zfc+vDIdJM= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com; spf=pass smtp.mailfrom=baylibre.com; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b=B5jeWqSc; arc=none smtp.client-ip=209.85.210.45 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=baylibre.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=baylibre.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=baylibre.com header.i=@baylibre.com header.b="B5jeWqSc" Received: by mail-ot1-f45.google.com with SMTP id 46e09a7af769-7e6128bd9b3so2239835a34.1 for ; Tue, 14 Jul 2026 07:44:23 -0700 (PDT) DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=baylibre.com; s=google; t=1784040260; x=1784645060; darn=vger.kernel.org; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:from:to:cc:subject:date:message-id:reply-to :content-type; bh=ByFodd6VvmfsjIG51piOnpiF2zzXgO9EYKqqK0KYSPo=; b=B5jeWqScjPcvspSWVNgxh1OlG8owPePz/sBKp0tchS9eaGeoyHm82sWjDcDY7ULr6F zJe+NNbBPOAGymCwvAOHk2LUZrlPmy+FN65kZ+PbmXltd7BB3H5eNvkggVehlyveUMiy WMvsBieGAP7uQH7raMGKTQcSS9idd0gyG7liqfnidL954wl3hPFoUD/4W2BV8Z4mJLdS E82yMpAOfBBvfVCXx8KG9IZZij8eQ4K8lGSUDbpWtEcJRziMw9dKPj1VdvlmMfvpoFbN FDD/QF3jQa+I2gZ33qG7H2/fyvhqKz9yvn4rcVNAFEuOw769AsKva6zraobU96ugPXa5 xSUQ== X-Google-DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d=1e100.net; s=20251104; t=1784040260; x=1784645060; h=content-transfer-encoding:content-type:in-reply-to:from :content-language:references:cc:to:subject:user-agent:mime-version :date:message-id:x-gm-gg:x-gm-message-state:from:to:cc:subject:date :message-id:reply-to:content-type; bh=ByFodd6VvmfsjIG51piOnpiF2zzXgO9EYKqqK0KYSPo=; b=mpiQUJZgBlKbI8uziQaG8BFwk/+lEDgE+O6g2Cn1c4bC0y1hqujl+d2MKMJHkMaonp DnK/ESxC/87RK75TLodrsgU+ruGPHe3a3yQiS6SP4s+0+/F0oCOhsXO8HH8XAUxMFSdT fdeJhxht3ZnCHxJPe9ElP3zSS9je/opOYoPBmakf7Kz2CPvJws2NjACAZKC1Q8lOK6Mj zR4HUzeoG0XjOeB0Sy1fUaZoIQHj2HNZ8I9u/iXmWfCfdntk8hifWbqpLTW9pI0nEQC/ 2zAAuFHWdscKaC2EsaGwJzDr/0e+/+dWprn7gL+kyd5kwlhkMCAVGtgQT4D5tAxSBUiS ztOg== X-Forwarded-Encrypted: i=1; AFNElJ9ZDMR6BWF9D9KY3MD52zWIaKVNKGEPKaPbpSv/U3nhMG0aPNFvDaTsZUHRb1lqtRhfv+lk29O0j1yLgb4=@vger.kernel.org X-Gm-Message-State: AOJu0YxNe4JipzFQyShxPHQggxch4ERx9v7zlowAQmx6clhdFqU6clzo X6KsJZRCXS5xVn2+ZyMkuqJgRTV+0UymxN+7ePlLc+ca3ajeRufT8ynAcQ2WNbZjkAM= X-Gm-Gg: AfdE7cmceHtLsreMvSs5szcl8xYFFqHhsPpVAa2gfjc509Jkz8um7ad80Q1f1F05w9r oqAUaSevNb3mMgdOior4DztdGwRWIMlZLSABhfeLqk7YzM/RzLONU5LQl25Rvy3kh1hVGxgNNEM V88/a0f168MOgdIVWLsUzHX7X3e+fRdSmsT1LQzxJIMJNKjApRmetiIh5XyDOHPyIoaBxQM4AdM Uhs2QFKTtjqcFndkMGDNBkcU4RasNFU0TrCfjk/ebIwa0yMbjsi8IsnnJLaDch+1+gw/Em9C3iu 6nk9hWfXkBxeBMmH61s70d/TBZtEFfJeJVe7sURG95tBqj7nDGzGbR8OCX0vQmerxGnOypX1b/N 4EEqtqNDqxbJmBz0sKRjNxdq2QdWuXX7vHIND6xH2x7x8K+GAIPxNnv7cHfg5G0OjnfctPgW0kh 6PI9/1tJJSJOjsy/trmhIRap96oi7R2wVWFZvE5ckdw5TRlKeeybi9eXqKxmHQbHQ= X-Received: by 2002:a05:6830:349a:b0:7e7:7fbc:8e51 with SMTP id 46e09a7af769-7ec097b5ba2mr8615207a34.24.1784040260485; Tue, 14 Jul 2026 07:44:20 -0700 (PDT) Received: from ?IPV6:2600:8803:e7e4:500:280e:69fd:7612:d5a9? ([2600:8803:e7e4:500:280e:69fd:7612:d5a9]) by smtp.gmail.com with ESMTPSA id 46e09a7af769-7ebcb2bae7fsm16738711a34.21.2026.07.14.07.44.19 (version=TLS1_3 cipher=TLS_AES_128_GCM_SHA256 bits=128/128); Tue, 14 Jul 2026 07:44:19 -0700 (PDT) Message-ID: Date: Tue, 14 Jul 2026 09:44:19 -0500 Precedence: bulk X-Mailing-List: linux-kernel@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 User-Agent: Mozilla Thunderbird Subject: Re: [PATCH 0/6] spi: add multi-CS and per-transfer lane mask support To: Andy Shevchenko Cc: Jonathan Santos , linux-spi@vger.kernel.org, linux-kernel@vger.kernel.org, nuno.sa@analog.com, michael.hennerich@analog.com, broonie@kernel.org, jonath4nns@gmail.com, marcelo.schmitt1@gmail.com, andy@kernel.org References: <6cf508ec-c139-4969-9342-d5b6717bde21@baylibre.com> Content-Language: en-US From: David Lechner In-Reply-To: Content-Type: text/plain; charset=UTF-8 Content-Transfer-Encoding: 7bit On 7/14/26 9:26 AM, Andy Shevchenko wrote: > On Tue, Jul 14, 2026 at 09:09:02AM -0500, David Lechner wrote: >> On 7/14/26 3:57 AM, Andy Shevchenko wrote: >>> On Tue, Jul 14, 2026 at 02:55:31AM -0300, Jonathan Santos wrote: >>>> This series introduces two SPI subsystem features: per-transfer chipselect >>>> masks and multi-CS device support. Together they address the multi-device >>>> setup described in [1] and the limitation noted in [2], where no SPI >>>> controller completely handles logical chip selects beyond the first one. >>>> >>>> The first part of the set addresses multi-CS support. Some SPI controllers >>>> can assert multiple chip selects simultaneously, but the existing code >>>> hardcoded CS index 0 in both spi_set_cs() and of_spi_parse_dt(), >>>> preventing this from working. >>>> >>>> The second part addresses dynamic lane selection for STRIPE mode. In >>>> SPI_MULTI_LANE_MODE_STRIPE, all available lanes are currently always >>>> active. Some peripherals need to select a different subset of rx/tx lanes >>>> per transfer. New fields are added to the spi_transfer struct to allow >>>> drivers to specify which lanes to use for each transfer. The documentation >>>> is also updated to describe this new behavior. >>> >>>> [1]: https://lore.kernel.org/linux-iio/af0EGv172ZMl%2F6N5@JSANTO12-L01.ad.analog.com/T/#t >>>> [2]: https://lore.kernel.org/all/20250915183725.219473-1-jonas.gorski@gmail.com/ >>> >>> Mark usually "merges" a series like this and cover letter goes as merge commit >>> message. With that in mind, can we use Link tags for the above? Like >>> >>> Link: ... [1] >>> Link: ... [2] > >> Beware, that would cause b4 to add the links to every patch in the series. > > Even in `b4 shazam` case? I thought it adds only a single Link per patch, > and leaves the original Links as is. No? Last I checked (which was a while ago), all tags in the cover letter get applied to all patches in the series. > > Also this can be done with the blank line before real tags, would it make > it behave differently? > Don't know.