linux-kernel - Re: [RFC] spi: expand bits_per_word

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Message-ID: <b3d2a914-77be-4be6-bd43-cfaea7e450c9@sirena.org.uk>
Date: Wed, 11 Jun 2025 12:12:50 +0100
From: Mark Brown <broonie@...nel.org>
To: Da Xue <da@...re.computer>
Cc: Lars-Peter Clausen <lars@...afoo.de>,
	Michael Hennerich <Michael.Hennerich@...log.com>,
	Jonathan Cameron <jic23@...nel.org>,
	David Lechner <dlechner@...libre.com>,
	Nuno Sá <nuno.sa@...log.com>,
	Andy Shevchenko <andy@...nel.org>,
	Rui Miguel Silva <rmfrfs@...il.com>,
	Viresh Kumar <vireshk@...nel.org>, Johan Hovold <johan@...nel.org>,
	Alex Elder <elder@...nel.org>,
	Greg Kroah-Hartman <gregkh@...uxfoundation.org>,
	linux-iio@...r.kernel.org, linux-kernel@...r.kernel.org,
	linux-spi@...r.kernel.org, greybus-dev@...ts.linaro.org,
	linux-staging@...ts.linux.dev
Subject: Re: [RFC] spi: expand bits_per_word_mask to 64 bits

On Tue, Jun 10, 2025 at 08:05:15PM -0400, Da Xue wrote:

> Most current controller IP support 64-bit words.
> Update the mask to u64 from u32.

The change looks broadly good, the only concern I have is making sure
that the controllers are individually checked for support and impose any
restrictions they need.

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