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rtc: rzn1: Add support for Renesas RZ/T2H and RZ/N2H SoCs

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Add support for the RTC block found on the Renesas RZ/T2H (R9A09G077)
and RZ/N2H (R9A09G087) SoCs.

These SoCs integrate a closely related variant of the RZ/N1 RTC IP, but
do not implement the RTCA0SUBU register. Use variant-specific match data
to disable SUBU support for these SoCs.

Signed-off-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Tested-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Link: https://patch.msgid.link/20260821211032.13554-18-prabhakar.mahadev-lad.rj@bp.renesas.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Lad Prabhakar
2026-08-21 22:10:32 +01:00
committed by Alexandre Belloni
parent 8af6331c6e
commit b418fa370e
1 changed files with 5 additions and 0 deletions
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5
drivers/rtc/rtc-rzn1.c
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@@ -523,11 +523,16 @@ static int rzn1_rtc_probe(struct platform_device *pdev)
return devm_rtc_register_device(rtc->rtcdev);
}
static const struct rzn1_rtc_data rzn1_rtc_rzt2h_data = {
.has_subu = false,
};
static const struct rzn1_rtc_data rzn1_rtc_rzn1_data = {
.has_subu = true,
};
static const struct of_device_id rzn1_rtc_of_match[] = {
{ .compatible = "renesas,r9a09g077-rtc", .data = &rzn1_rtc_rzt2h_data },
{ .compatible = "renesas,rzn1-rtc", .data = &rzn1_rtc_rzn1_data },
{ /* sentinel */ }
};