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References: <20240118-imx6-hb-primary-rtc-v1-1-81b87935c557@solid-run.com>
In-Reply-To: <20240118-imx6-hb-primary-rtc-v1-1-81b87935c557@solid-run.com>
From: Fabio Estevam <festevam@gmail.com>
Date: Thu, 18 Jan 2024 12:10:02 -0300
Message-ID: <CAOMZO5ACbROrTXTe=7jEXyCJ7tpHNjhPKZqRWnz-RQJNz4MrwQ@mail.gmail.com>
Subject: Re: [PATCH] ARM: dts: imx6qdl-hummingboard: Add rtc0 and rtc1 aliases
 to fix hctosys
To: Josua Mayer <josua@solid-run.com>
Cc: Russell King <linux@armlinux.org.uk>, Rob Herring <robh+dt@kernel.org>, 
	Krzysztof Kozlowski <krzysztof.kozlowski+dt@linaro.org>, Conor Dooley <conor+dt@kernel.org>, 
	Shawn Guo <shawnguo@kernel.org>, Sascha Hauer <s.hauer@pengutronix.de>, 
	Pengutronix Kernel Team <kernel@pengutronix.de>, NXP Linux Team <linux-imx@nxp.com>, 
	Yazan Shhady <yazan.shhady@solid-run.com>, Jon Nettleton <jon@solid-run.com>, 
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org, 
	linux-kernel@vger.kernel.org
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On Thu, Jan 18, 2024 at 12:01=E2=80=AFPM Josua Mayer <josua@solid-run.com> =
wrote:
>
> HummingBoard has two RTCs, first integrated within SoC that can be used t=
o
> wake up from sleep - and a second on the carrier board including back-up
> battery which is intended for keeping time during power-off.
>
> Add aliases for both, ensuring that the battery-backed clock is primary
> rtc and used by default during boot for restoring system time.
>
> Fixes keeping time across power-cycle observed on Debian,
> which sets RTC_HCTOSYS_DEVICE=3D"rtc0".
>
> Signed-off-by: Josua Mayer <josua@solid-run.com>

Reviewed-by: Fabio Estevam <festevam@gmail.com>