linux-kernel - [PATCH 4/6] rtc: renesas-rtca3: Add support for RZ/V2H SoC

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <20251019092106.5737-5-ovidiu.panait.rb@renesas.com>
Date: Sun, 19 Oct 2025 09:21:04 +0000
From: Ovidiu Panait <ovidiu.panait.rb@...esas.com>
To: claudiu.beznea.uj@...renesas.com,
	alexandre.belloni@...tlin.com,
	robh@...nel.org,
	krzk+dt@...nel.org,
	conor+dt@...nel.org,
	geert+renesas@...der.be,
	magnus.damm@...il.com,
	mturquette@...libre.com,
	sboyd@...nel.org,
	p.zabel@...gutronix.de
Cc: linux-rtc@...r.kernel.org,
	linux-renesas-soc@...r.kernel.org,
	devicetree@...r.kernel.org,
	linux-kernel@...r.kernel.org,
	linux-clk@...r.kernel.org
Subject: [PATCH 4/6] rtc: renesas-rtca3: Add support for RZ/V2H SoC

Add a new compatible string for the Renesas RZ/V2H RTC along with the SoC
specific OF data, to account for the different maximum periodic interrupt
frequency (128Hz).

Also, switch from devm_reset_control_get_shared() to
devm_reset_control_array_get_shared() when retrieving resets.
The RZ/V2H SoC requires two resets for the RTC block instead of one,
so this will allow to handle multiple resets without additional changes.

Signed-off-by: Ovidiu Panait <ovidiu.panait.rb@...esas.com>
---
 drivers/rtc/rtc-renesas-rtca3.c | 7 ++++++-
 1 file changed, 6 insertions(+), 1 deletion(-)

diff --git a/drivers/rtc/rtc-renesas-rtca3.c b/drivers/rtc/rtc-renesas-rtca3.c
index 90dda04fad33..96f5d3734d93 100644
--- a/drivers/rtc/rtc-renesas-rtca3.c
+++ b/drivers/rtc/rtc-renesas-rtca3.c
@@ -738,7 +738,7 @@ static int rtca3_probe(struct platform_device *pdev)
 	if (ret)
 		return ret;
 
-	priv->rstc = devm_reset_control_get_shared(dev, NULL);
+	priv->rstc = devm_reset_control_array_get_shared(dev);
 	if (IS_ERR(priv->rstc))
 		return PTR_ERR(priv->rstc);
 
@@ -887,11 +887,16 @@ static int rtca3_resume(struct device *dev)
 
 static DEFINE_SIMPLE_DEV_PM_OPS(rtca3_pm_ops, rtca3_suspend, rtca3_resume);
 
+static const struct rtca3_of_data rtca3_rzv2h_of_data = {
+	.max_periodic_irq_freq = 128,
+};
+
 static const struct rtca3_of_data rtca3_of_data = {
 	.max_periodic_irq_freq = 256,
 };
 
 static const struct of_device_id rtca3_of_match[] = {
+	{ .compatible = "renesas,r9a09g057-rtca3", .data = &rtca3_rzv2h_of_data },
 	{ .compatible = "renesas,rz-rtca3", .data = &rtca3_of_data },
 	{ /* sentinel */ }
 };
-- 
2.51.0