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From: Maurice Hieronymus <mhi@mailbox.org>
To: "Michal Wilczynski" <m.wilczynski@samsung.com>,
	"Drew Fustini" <fustini@kernel.org>,
	"Guo Ren" <guoren@kernel.org>, "Fu Wei" <wefu@redhat.com>,
	"Uwe Kleine-König" <ukleinek@kernel.org>,
	"Miguel Ojeda" <ojeda@kernel.org>,
	"Boqun Feng" <boqun@kernel.org>, "Gary Guo" <gary@garyguo.net>,
	"Björn Roy Baron" <bjorn3_gh@protonmail.com>,
	"Benno Lossin" <lossin@kernel.org>,
	"Andreas Hindborg" <a.hindborg@kernel.org>,
	"Alice Ryhl" <aliceryhl@google.com>,
	"Trevor Gross" <tmgross@umich.edu>,
	"Danilo Krummrich" <dakr@kernel.org>
Cc: linux-riscv@lists.infradead.org, linux-pwm@vger.kernel.org,
	 linux-kernel@vger.kernel.org, rust-for-linux@vger.kernel.org
Subject: Re: [PATCH RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup
Date: Sat, 30 May 2026 12:41:08 +0200	[thread overview]
Message-ID: <47062326dcf87b605cf4def9835394551645caa5.camel@mailbox.org> (raw)
In-Reply-To: <58245ce0-7271-4b07-b866-0037ff68d92c@samsung.com>

> 
> Apologies, I have to correct my statement from before after
> discussing
No worries!
> with Uwe. The reason the macro was used in the mentioned driver is
> NOT
> that PWM controllers have 64-bit registers - Uwe isn't aware of that
> being a real pattern either, and I was inferring it from the code
> rather
> than from hardware reality. The actual reason the macros get used
> isn't
> unified across drivers and we should pin that down separately rather
> than block your patch on it.
> 
> So please hold off on the Rust helper for now - your initial patch
> might
> be the right direction.
> 
Is there any further conclusion which direction is right? Can we merge
my patch, does it need some change or are we going down the road with
the Rust helpers?

Thanks!

Maurice
> > 
> > Maurice
> > 
> 
> Best regards,

  reply	other threads:[~2026-05-30 10:41 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
     [not found] <CGME20260525131112eucas1p1d7e4836f71c81686e1f71e4007e344ec@eucas1p1.samsung.com>
2026-05-25 13:11 ` [PATCH RESEND] pwm: th1520: Remove requirement for mul_u64_u64_div_u64_roundup Maurice Hieronymus via B4 Relay
2026-05-25 14:36   ` Michal Wilczynski
2026-05-25 15:51     ` Maurice Hieronymus
2026-05-25 17:29       ` Gary Guo
2026-05-25 21:38       ` Michal Wilczynski
2026-05-30 10:41         ` Maurice Hieronymus [this message]
2026-05-30 17:45           ` Michal Wilczynski

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