Commit 2724fb4d authored by Tomas Melin's avatar Tomas Melin Committed by Alexandre Belloni
Browse files

rtc: zynqmp: correct frequency value 



Fix calibration value in case a clock reference is provided.
The actual calibration value written into register is
frequency - 1.

Reviewed-by: default avatarHarini T <harini.t@amd.com>
Tested-by: default avatarHarini T <harini.t@amd.com>
Signed-off-by: default avatarTomas Melin <tomas.melin@vaisala.com>
Acked-by: default avatarMichal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260122-zynqmp-rtc-updates-v4-1-d4edb966b499@vaisala.com


Signed-off-by: default avatarAlexandre Belloni <alexandre.belloni@bootlin.com>
parent 1932db20

drivers/rtc/rtc-zynqmp.c

+3 −0
Original line number Diff line number Diff line
@@ -345,7 +345,10 @@ static int xlnx_rtc_probe(struct platform_device *pdev) 
					   &xrtcdev->freq);

		if (ret)

			xrtcdev->freq = RTC_CALIB_DEF;

	} else {

		xrtcdev->freq--;

	}



	ret = readl(xrtcdev->reg_base + RTC_CALIB_RD);

	if (!ret)

		writel(xrtcdev->freq, (xrtcdev->reg_base + RTC_CALIB_WR));