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rtc: rzn1: add R-Car X5H support

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The RTC on R-Car X5H is a bit special because interrupts are not wired.
Future R-Car Gen5 SoCs will have them wired again. So, create a
dedicated entry for X5H without interrupts.

Signed-off-by: Wolfram Sang <wsa+renesas@sang-engineering.com>
Reviewed-by: Lad Prabhakar <prabhakar.mahadev-lad.rj@bp.renesas.com>
Reviewed-by: Geert Uytterhoeven <geert+renesas@glider.be>
Link: https://patch.msgid.link/20260917185903.61253-10-wsa+renesas@sang-engineering.com
Signed-off-by: Alexandre Belloni <alexandre.belloni@bootlin.com>
This commit is contained in:
Wolfram Sang 2026-09-17 20:59:07 +02:00 committed by Alexandre Belloni
parent 3b3fdc9fd4
commit cba3b5f4cc
1 changed files with 35 additions and 17 deletions
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52
drivers/rtc/rtc-rzn1.c
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@ -68,6 +68,7 @@
struct rzn1_rtc_data {
bool has_subu;
bool broken_irqs;
};
struct rzn1_rtc {
@ -396,6 +397,11 @@ static const struct rtc_class_ops rzn1_rtc_ops_scmp = {
.alarm_irq_enable = rzn1_rtc_alarm_irq_enable,
};
static const struct rtc_class_ops rzn1_rtc_ops_scmp_no_alarm = {
.read_time = rzn1_rtc_read_time,
.set_time = rzn1_rtc_set_time,
};
static void rzn1_rtc_disable_hardware(void *data)
{
struct device *dev = data;
@ -431,10 +437,6 @@ static int rzn1_rtc_probe(struct platform_device *pdev)
if (IS_ERR(rtc->base))
return dev_err_probe(dev, PTR_ERR(rtc->base), "Missing reg\n");
irq = platform_get_irq_byname(pdev, "alarm");
if (irq < 0)
return irq;
rtc->rtcdev = devm_rtc_allocate_device(dev);
if (IS_ERR(rtc->rtcdev))
return PTR_ERR(rtc->rtcdev);
@ -503,25 +505,40 @@ static int rzn1_rtc_probe(struct platform_device *pdev)
spin_lock_init(&rtc->ctl1_access_lock);
ret = devm_request_irq(dev, irq, rzn1_rtc_alarm_irq, 0, "RZN1 RTC Alarm", rtc);
if (ret)
return dev_err_probe(dev, ret, "RTC alarm interrupt not available\n");
irq = platform_get_irq_byname_optional(pdev, "pps");
if (irq == -EPROBE_DEFER)
return irq;
if (irq >= 0)
ret = devm_request_irq(dev, irq, rzn1_rtc_1s_irq, 0, "RZN1 RTC 1s", rtc);
if (irq < 0 || ret) {
set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features);
if (data->broken_irqs) {
/* All known broken irqs are on SCMP only variants */
rtc->rtcdev->ops = &rzn1_rtc_ops_scmp_no_alarm;
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features);
dev_warn(dev, "RTC pps interrupt not available. Alarm has only minute accuracy\n");
} else {
irq = platform_get_irq_byname(pdev, "alarm");
if (irq < 0)
return irq;
ret = devm_request_irq(dev, irq, rzn1_rtc_alarm_irq, 0, "RZN1 RTC Alarm", rtc);
if (ret)
return dev_err_probe(dev, ret, "RTC alarm interrupt not available\n");
irq = platform_get_irq_byname_optional(pdev, "pps");
if (irq == -EPROBE_DEFER)
return irq;
if (irq >= 0)
ret = devm_request_irq(dev, irq, rzn1_rtc_1s_irq, 0, "RZN1 RTC 1s", rtc);
if (irq < 0 || ret) {
set_bit(RTC_FEATURE_ALARM_RES_MINUTE, rtc->rtcdev->features);
clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features);
dev_warn(dev, "RTC pps interrupt not available. Alarm has only minute accuracy\n");
}
}
return devm_rtc_register_device(rtc->rtcdev);
}
static const struct rzn1_rtc_data rzn1_rtc_r8a78000_data = {
.has_subu = false,
.broken_irqs = true,
};
static const struct rzn1_rtc_data rzn1_rtc_rzt2h_data = {
.has_subu = false,
};
@ -531,6 +548,7 @@ static const struct rzn1_rtc_data rzn1_rtc_rzn1_data = {
};
static const struct of_device_id rzn1_rtc_of_match[] = {
{ .compatible = "renesas,r8a78000-rtc", .data = &rzn1_rtc_r8a78000_data },
{ .compatible = "renesas,r9a09g077-rtc", .data = &rzn1_rtc_rzt2h_data },
{ .compatible = "renesas,rzn1-rtc", .data = &rzn1_rtc_rzn1_data },
{ /* sentinel */ }