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[75.72.162.184]) by smtp.gmail.com with ESMTPSA id d75a77b69052e-4796edc29ccsm99746291cf.77.2025.04.15.18.01.49 (version=TLS1_3 cipher=TLS_AES_256_GCM_SHA384 bits=256/256); Tue, 15 Apr 2025 18:01:50 -0700 (PDT) From: Adam Ford To: linux-arm-kernel@lists.infradead.org Cc: aford@beaconembedded.com, Frank.li@nxp.com, Adam Ford , Rob Herring , Krzysztof Kozlowski , Conor Dooley , Shawn Guo , Sascha Hauer , Pengutronix Kernel Team , Fabio Estevam , devicetree@vger.kernel.org, imx@lists.linux.dev, linux-kernel@vger.kernel.org Subject: [PATCH V2 03/10] arm64: dts: imx8mp-beacon: Fix RTC capacitive load Date: Tue, 15 Apr 2025 20:01:29 -0500 Message-ID: <20250416010141.1785841-3-aford173@gmail.com> X-Mailer: git-send-email 2.48.1 In-Reply-To: <20250416010141.1785841-1-aford173@gmail.com> References: <20250416010141.1785841-1-aford173@gmail.com> MIME-Version: 1.0 Content-Transfer-Encoding: 8bit X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20250415_180153_476571_473E8ABA X-CRM114-Status: GOOD ( 10.87 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org Although not noticeable when used every day, the RTC appears to drift when left to sit over time. This is due to the capacitive load not being properly set. Fix RTC drift by correcting the capacitive load setting from 7000 to 12500, which matches the actual hardware configuration. Fixes: 25a5ccdce767 ("arm64: dts: freescale: Introduce imx8mp-beacon-kit") Signed-off-by: Adam Ford --- V2: Change commit message, no active changes. arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi | 1 + 1 file changed, 1 insertion(+) diff --git a/arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi b/arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi index 15f7ab58db36..88561df70d03 100644 --- a/arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi +++ b/arch/arm64/boot/dts/freescale/imx8mp-beacon-som.dtsi @@ -257,6 +257,7 @@ eeprom@50 { rtc: rtc@51 { compatible = "nxp,pcf85263"; reg = <0x51>; + quartz-load-femtofarads = <12500>; }; }; -- 2.48.1