From patchwork Wed Oct 9 22:40:06 2019 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Alexandre Belloni X-Patchwork-Id: 11182323 Return-Path: Received: from mail.kernel.org (pdx-korg-mail-1.web.codeaurora.org [172.30.200.123]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 66319112B for ; Wed, 9 Oct 2019 22:41:43 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id 441FD206A1 for ; Wed, 9 Oct 2019 22:41:43 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="G4Or1jTM" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 441FD206A1 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=bootlin.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-Id:Date:Subject:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=dWd8pnsM2TMs3Yi1ldVsP64lNkdZEWlxvDPvCohsAp8=; b=G4Or1jTMDXH3Ql 4Qc+Os7c+IcHFlSLwu7QEWpt//sxDGcqyhUqdW0yBqqfgtU0C7oUfHTcR1OsgrZYt71IITWyhG2SC +2kY/CopSKp8MxTOSzKRW0d2qtwWKzSdQsHugp1eFXvXovk+UbMA/hY9u//STA0H+PmuPOYKr57og ZHKpMBA/h32+4df4L1DbmpcNRlNO1evcwOCaARCM2c33FdbYx0pOEFjwOm5F7u0W1SMWJHUkRr3TA BO0Wnfu2B23pQcmMJ6Gm/vWeTjhLdkW91Xii65mxe5v5XIBpkv0cKa7gjNAvSLIuNbuR0snKXtmkT OM6d74UgDPAy2Vtwij6w==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.92.2 #3 (Red Hat Linux)) id 1iIKeJ-00020l-I2; Wed, 09 Oct 2019 22:41:39 +0000 Received: from relay7-d.mail.gandi.net ([217.70.183.200]) by bombadil.infradead.org with esmtps (Exim 4.92.2 #3 (Red Hat Linux)) id 1iIKd6-0000me-Tp for linux-arm-kernel@lists.infradead.org; Wed, 09 Oct 2019 22:40:28 +0000 X-Originating-IP: 86.202.229.42 Received: from localhost (lfbn-lyo-1-146-42.w86-202.abo.wanadoo.fr [86.202.229.42]) (Authenticated sender: alexandre.belloni@bootlin.com) by relay7-d.mail.gandi.net (Postfix) with ESMTPSA id EF3B920003; Wed, 9 Oct 2019 22:40:16 +0000 (UTC) From: Alexandre Belloni To: Daniel Lezcano Subject: [PATCH 8/8] clocksource/drivers/timer-atmel-tcb: add sama5d2 support Date: Thu, 10 Oct 2019 00:40:06 +0200 Message-Id: <20191009224006.5021-9-alexandre.belloni@bootlin.com> X-Mailer: git-send-email 2.21.0 In-Reply-To: <20191009224006.5021-1-alexandre.belloni@bootlin.com> References: <20191009224006.5021-1-alexandre.belloni@bootlin.com> MIME-Version: 1.0 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20191009_154025_113771_CCD0EB7B X-CRM114-Status: GOOD ( 13.01 ) X-Spam-Score: -0.7 (/) X-Spam-Report: SpamAssassin version 3.4.2 on bombadil.infradead.org summary: Content analysis details: (-0.7 points) pts rule name description ---- ---------------------- -------------------------------------------------- -0.7 RCVD_IN_DNSWL_LOW RBL: Sender listed at https://www.dnswl.org/, low trust [217.70.183.200 listed in list.dnswl.org] -0.0 SPF_PASS SPF: sender matches SPF record 0.0 SPF_HELO_NONE SPF: HELO does not publish an SPF Record X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.29 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: devicetree@vger.kernel.org, Alexandre Belloni , Sebastian Andrzej Siewior , linux-kernel@vger.kernel.org, Thomas Gleixner , linux-arm-kernel@lists.infradead.org Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+patchwork-linux-arm=patchwork.kernel.org@lists.infradead.org The first divisor for the sama5d2 is actually the gclk selector. Because the currently remaining divisors are fitting the use case, currently ensure it is skipped. Signed-off-by: Alexandre Belloni --- drivers/clocksource/timer-atmel-tcb.c | 11 ++++++++++- include/soc/at91/atmel_tcb.h | 1 + 2 files changed, 11 insertions(+), 1 deletion(-) diff --git a/drivers/clocksource/timer-atmel-tcb.c b/drivers/clocksource/timer-atmel-tcb.c index ccb77b9cb489..e373b02d509a 100644 --- a/drivers/clocksource/timer-atmel-tcb.c +++ b/drivers/clocksource/timer-atmel-tcb.c @@ -359,9 +359,15 @@ static struct atmel_tcb_config tcb_sam9x5_config = { .counter_width = 32, }; +static struct atmel_tcb_config tcb_sama5d2_config = { + .counter_width = 32, + .has_gclk = 1, +}; + static const struct of_device_id atmel_tcb_of_match[] = { { .compatible = "atmel,at91rm9200-tcb", .data = &tcb_rm9200_config, }, { .compatible = "atmel,at91sam9x5-tcb", .data = &tcb_sam9x5_config, }, + { .compatible = "atmel,sama5d2-tcb", .data = &tcb_sama5d2_config, }, { /* sentinel */ } }; @@ -426,7 +432,10 @@ static int __init tcb_clksrc_init(struct device_node *node) /* How fast will we be counting? Pick something over 5 MHz. */ rate = (u32) clk_get_rate(t0_clk); - for (i = 0; i < ARRAY_SIZE(atmel_tcb_divisors); i++) { + i = 0; + if (tc.tcb_config->has_gclk) + i = 1; + for (; i < ARRAY_SIZE(atmel_tcb_divisors); i++) { unsigned divisor = atmel_tcb_divisors[i]; unsigned tmp; diff --git a/include/soc/at91/atmel_tcb.h b/include/soc/at91/atmel_tcb.h index c3c7200ce151..fbf5474f4484 100644 --- a/include/soc/at91/atmel_tcb.h +++ b/include/soc/at91/atmel_tcb.h @@ -39,6 +39,7 @@ struct clk; */ struct atmel_tcb_config { size_t counter_width; + unsigned int has_gclk:1; }; /**