[PATCH 12/12] rtc: rzn1: Add support for Renesas RZ/T2H and RZ/N2H SoCs

[Prabhakar]

From: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>

Add a new compatible string "renesas,r9a09g077-rtc" to the OF match table
to support the RTC IP variant found on the RZ/T2H and RZ/N2H SoCs.

These newer SoCs integrate a closely related variant of the RZ/N1 RTC IP.
The RZ/T2H and RZ/N2H variants lack the RTCA0SUBU and RTCA0TCR  registers,
those registers are not accessed or used when operating under the
rzn1_rtc_ops_scmp configurations, making the current infrastructure
compatible.

The RZ/T2H RTC variant also supports a 1 Hz output signal on the
RTCAT1HZ pin, controlled by the RTCA0CTL1[RTCA01HZE] bit. This bit is
marked as reserved in the RZ/N1 hardware manual, making RZ/T2H a
distinct RTC variant despite its overall compatibility with the RZ/N1
implementation.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@xxxxxxxxxxxxxx>
---
 drivers/rtc/rtc-rzn1.c | 1 +
 1 file changed, 1 insertion(+)

diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c
index 9f9cf9882fc4..dfff8dc8c321 100644
--- a/drivers/rtc/rtc-rzn1.c
+++ b/drivers/rtc/rtc-rzn1.c
@@ -597,6 +597,7 @@ static int rzn1_rtc_resume(struct device *dev)
 static DEFINE_SIMPLE_DEV_PM_OPS(rzn1_rtc_pm_ops, rzn1_rtc_suspend, rzn1_rtc_resume);
 
 static const struct of_device_id rzn1_rtc_of_match[] = {
+	{ .compatible	= "renesas,r9a09g077-rtc" },
 	{ .compatible	= "renesas,rzn1-rtc" },
 	{},
 };
-- 
2.54.0