From mboxrd@z Thu Jan 1 00:00:00 1970 Received: from mail.zeus03.de (zeus03.de [194.117.254.33]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by smtp.subspace.kernel.org (Postfix) with ESMTPS id 191F84D90BA for ; Wed, 16 Sep 2026 10:25:38 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=194.117.254.33 ARC-Seal:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789554342; cv=none; b=jWaJ49bSYtsWbHYk9NmJQ5VCJ6urvPhjB8TI3/qc460WNlW9Rukh91KuwxN13JQlyFPa9ZO3EThELR6zANMRcpSPAwygXoQXf7KpGKH3YeKSGWOLOlYUAaQRK06TrxIzocdSgADjeTBBlo61/ZaL1k9hmEf6X+i8wTCq6UFDuGE= ARC-Message-Signature:i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1789554342; c=relaxed/simple; bh=j9v7DkGfpB4zGAwndCJ1McVF5cfElSugk5pjDEYvNr4=; h=From:To:Cc:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version; b=JAhoLxjwNDavWaJL5d8RefKzfKtSJMhXAgnAUQU5onhcrxk4YrXVKcy+GS77bJk+f5sS6Ta1pSqguJaqLfhKaKyj5n1PkVaC13bAdTR8aEvcm6LL1zgFWATaJeESvSC9hjPiQ0SK6lADY4apDvlVzCI9lrCE5isyaUHTjWhXT6U= ARC-Authentication-Results:i=1; smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com; spf=pass smtp.mailfrom=sang-engineering.com; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b=a7XvOaV5; arc=none smtp.client-ip=194.117.254.33 Authentication-Results: smtp.subspace.kernel.org; dmarc=none (p=none dis=none) header.from=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=sang-engineering.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=sang-engineering.com header.i=@sang-engineering.com header.b="a7XvOaV5" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/relaxed; d= sang-engineering.com; h=from:to:cc:subject:date:message-id :in-reply-to:references:mime-version:content-transfer-encoding; s=k1; bh=mVCe4GYcnfFzfwKQINJLnliob4JI5t7C6E9IUFzIfpM=; b=a7XvOa V5HnqsxN8aCBWaMmeLbs0QW6cVd0aDNBh065vDMZ33zsIdf2rorrhY8rGgcMKVcS VJD8pcUOUrz3qmA/YQBsFVM1qvOh/yBgWg1s8C+Jr/u3m3TUe71xpJc1tzZZLrsx oFcI/GYCpyadJVijktZrcuxCUytks6dOMR2HRYkdyGlA13uPFcqumD4TTi3TZsV+ 7aR6B+nMwo/sru/NxF4nFzOsnVKDcxv5Y7PO69TW7MGu8nnZxtIwvFI05/44zoqH 0GWsBBN8Phd0DAalqWrhKakVgpnRJrx5V9lxCoh6EA1q5+RlkA00Hqj9VP2SWyY4 vcEroNVZLrMEJBnA== Received: (qmail 1502948 invoked from network); 16 Sep 2026 12:25:24 +0200 Received: by mail.zeus03.de with ESMTPSA (TLS_AES_256_GCM_SHA384 encrypted, authenticated); 16 Sep 2026 12:25:24 +0200 X-UD-Smtp-Session: l3s3148p1@9gvLFZdbooMujnt4 From: Wolfram Sang To: linux-renesas-soc@vger.kernel.org Cc: "Lad Prabhakar" , Wolfram Sang , Miquel Raynal , Alexandre Belloni , Geert Uytterhoeven , Magnus Damm , linux-rtc@vger.kernel.org Subject: [PATCH v2 4/4] rtc: rzn1: add R-Car Gen5 support Date: Wed, 16 Sep 2026 12:25:19 +0200 Message-ID: <20260916102520.24288-5-wsa+renesas@sang-engineering.com> X-Mailer: git-send-email 2.53.0 In-Reply-To: <20260916102520.24288-1-wsa+renesas@sang-engineering.com> References: <20260916102520.24288-1-wsa+renesas@sang-engineering.com> Precedence: bulk X-Mailing-List: linux-rtc@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 Content-Transfer-Encoding: 8bit In general, the RTC on R-Car Gen5 is identical to RZ/T2H. X5H is an exception, though, because interrupts are not wired. X5H2 will have them wired again. So, skip alarm setup for the X5H case. Signed-off-by: Wolfram Sang --- drivers/rtc/rtc-rzn1.c | 54 ++++++++++++++++++++++++++++-------------- 1 file changed, 36 insertions(+), 18 deletions(-) diff --git a/drivers/rtc/rtc-rzn1.c b/drivers/rtc/rtc-rzn1.c index b9d69ebdd224..349288a07632 100644 --- a/drivers/rtc/rtc-rzn1.c +++ b/drivers/rtc/rtc-rzn1.c @@ -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 +505,39 @@ 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); - clear_bit(RTC_FEATURE_UPDATE_INTERRUPT, rtc->rtcdev->features); - dev_warn(dev, "RTC pps interrupt not available. Alarm has only minute accuracy\n"); + if (data->broken_irqs) { + /* All known broken irqs are on SCMP only variants */ + rtc->rtcdev->ops = &rzn1_rtc_ops_scmp_no_alarm; + } 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, }; @@ -531,7 +547,9 @@ 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,rcar-gen5-rtc", .data = &rzn1_rtc_rzt2h_data }, { .compatible = "renesas,rzn1-rtc", .data = &rzn1_rtc_rzn1_data }, { /* sentinel */ } }; -- 2.53.0