diff options
| author | Tomas Melin <tomas.melin@vaisala.com> | 2026-01-22 16:53:45 +0300 |
|---|---|---|
| committer | Alexandre Belloni <alexandre.belloni@bootlin.com> | 2026-01-29 18:44:37 +0300 |
| commit | 2724fb4d429cbb724dcb6fa17953040918ebe3a2 (patch) | |
| tree | 9fd25a1ef1a7489e184b382a9033fcd266a673b4 | |
| parent | 1932db202c9326747c6046959284992ab4124bac (diff) | |
| download | linux-2724fb4d429cbb724dcb6fa17953040918ebe3a2.tar.xz | |
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: Harini T <harini.t@amd.com>
Tested-by: Harini T <harini.t@amd.com>
Signed-off-by: Tomas Melin <tomas.melin@vaisala.com>
Acked-by: Michal Simek <michal.simek@amd.com>
Link: https://patch.msgid.link/20260122-zynqmp-rtc-updates-v4-1-d4edb966b499@vaisala.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
| -rw-r--r-- | drivers/rtc/rtc-zynqmp.c | 3 |
1 files changed, 3 insertions, 0 deletions
diff --git a/drivers/rtc/rtc-zynqmp.c b/drivers/rtc/rtc-zynqmp.c index 3baa2b481d9f..856bc1678e7d 100644 --- a/drivers/rtc/rtc-zynqmp.c +++ b/drivers/rtc/rtc-zynqmp.c @@ -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)); |