Re: [PATCH v3 0/4] rtc: pcf85063: Update interrupt support

From: Alexandre Belloni

Date: Thu Oct 29 2026 - 06:28:33 EST


On Fri, 28 Aug 2026 18:44:38 +0200, A. Sverdlin wrote:
> From: Alexander Sverdlin <alexander.sverdlin@xxxxxxxxxxx>
>
> Add hardware-backed UIE (1 Hz update interrupt) support to the pcf85063
> driver. The PCF85063A/RV8263 have no dedicated update-interrupt source,
> so chrony and similar tools that rely on RTC_UIE_ON fall back to the
> kernel's software polling emulation. This series repurposes the chip's
> countdown timer (TCF = 1 Hz, T = 1) to generate a periodic interrupt on
> the INT pin, serving UIE entirely in hardware.
>
> [...]

Applied, thanks!

[1/4] rtc: pcf85063: use devm_of_clk_add_hw_provider() for clkout
https://git.kernel.org/abelloni/c/a451b6bb922e
[2/4] rtc: pcf85063: do not clear AIE in the interrupt handler
https://git.kernel.org/abelloni/c/75ba9f3a6a0b
[3/4] rtc: pcf85063: preserve the alarm flag in clkout register updates
https://git.kernel.org/abelloni/c/09f5d9b8caaf
[4/4] rtc: pcf85063: add 1 Hz update interrupt (UIE) support
https://git.kernel.org/abelloni/c/45efb584a1c0

Best regards,

--
Alexandre Belloni, co-owner and COO, Bootlin
Embedded Linux and Kernel engineering
https://bootlin.com