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Tue, 18 Aug 2020 00:51:41 -0700 (PDT) Mime-Version: 1.0 (Mac OS X Mail 12.4 \(3445.104.15\)) Subject: Re: [PATCH v2 2/3] arm64: dts: meson-g12b-odroid-n2: Disable virtual RTC driver From: Christian Hewitt In-Reply-To: <1jzh6se6te.fsf@starbuckisacylon.baylibre.com> Date: Tue, 18 Aug 2020 11:51:38 +0400 Message-Id: <6B583170-3479-4DFB-B81A-431B5982C8D6@gmail.com> References: <20200817102122.434-1-linux.amoon@gmail.com> <20200817102122.434-3-linux.amoon@gmail.com> <1jzh6se6te.fsf@starbuckisacylon.baylibre.com> To: Jerome Brunet X-Mailer: Apple Mail (2.3445.104.15) X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20200818_035144_897792_F030864B X-CRM114-Status: UNSURE ( 9.47 ) X-CRM114-Notice: Please train this message. X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Neil Armstrong , Anand Moon , Kevin Hilman , Martin Blumenstingl , Rob Herring , linux-amlogic@lists.infradead.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org > On 18 Aug 2020, at 11:45 am, Jerome Brunet wrote: > > > On Mon 17 Aug 2020 at 12:21, Anand Moon wrote: > >> Disable virtual RTC node on Odroid N2, >> since RTC PCF8563 support rtc wakeup. >> >> [ 7.171149] meson-vrtc ff8000a8.rtc: registered as rtc0 >> [ 7.182875] meson-vrtc ff8000a8.rtc: setting system clock to 1970-01-01T00:00:07 UTC (7) >> > > Maybe I'm missing something but why should disable this ? > Can't the 2 RTCs co-exist ? aliases { serial0 = &uart_AO; ethernet0 = ðmac; rtc1 = &vrtc; }; ^ adding this alias moves vrtc to /dev/rtc1 allowing the on-board rtc to assume /dev/rtc0 which scripts/users and HOWTO guides assume to be a real clock device. Tested and working fine with my own experiments with enabling rtc on a bunch of G12B/SM1 boards. Christian _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel