[PATCH v2 23/33] arm64: zynqmp: Update rtc calibration value

From: Michal Simek <michal.simek@xilinx.com>
To: linux-kernel@vger.kernel.org, monstr@monstr.eu,
	michal.simek@xilinx.com, git@xilinx.com,
	Viresh Kumar <viresh.kumar@linaro.org>
Cc: Srinivas Neeli <srinivas.neeli@xilinx.com>,
	Krzysztof Kozlowski <krzk@kernel.org>,
	Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
	Rob Herring <robh+dt@kernel.org>,
	devicetree@vger.kernel.org, linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 23/33] arm64: zynqmp: Update rtc calibration value
Date: Mon, 14 Jun 2021 17:25:31 +0200	[thread overview]
Message-ID: <0d36d9fe999ff82f10d42ab5fc0d1e907c26ac34.1623684253.git.michal.simek@xilinx.com> (raw)
In-Reply-To: <cover.1623684253.git.michal.simek@xilinx.com>

From: Srinivas Neeli <srinivas.neeli@xilinx.com>

As per the design specification
"The 16-bit Seconds Calibration Value represents the number of
 Oscillator Ticks that are required to measure the largest time
 period that is less than or equal to 1 second.
 For an oscillator that is 32.768 KHz, this value will be 0x7FFF."

Signed-off-by: Srinivas Neeli <srinivas.neeli@xilinx.com>
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

Changes in v2: None

 arch/arm64/boot/dts/xilinx/zynqmp.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
index 80332e3b4d6a..da54a2d35552 100644
--- a/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
+++ b/arch/arm64/boot/dts/xilinx/zynqmp.dtsi
@@ -663,7 +663,7 @@ rtc: rtc@ffa60000 {
 			interrupt-parent = <&gic>;
 			interrupts = <0 26 4>, <0 27 4>;
 			interrupt-names = "alarm", "sec";
-			calibration = <0x8000>;
+			calibration = <0x7FFF>;
 		};
 
 		sata: ahci@fd0c0000 {
-- 
2.32.0

