From patchwork Thu Jan 30 17:33:52 2025 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ryan Wanner X-Patchwork-Id: 861184 Received: from esa.microchip.iphmx.com (esa.microchip.iphmx.com [68.232.153.233]) (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 7F4B51F03CB; Thu, 30 Jan 2025 17:36:14 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=68.232.153.233 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738258576; cv=none; b=YPZovOyTnMmmizJn+JTfkZAIu99bkKzcANrY6SE1GvN9PwWiwRrrdtyrxpeOIrBU4n/KULy08lraOCLBpuFxSaqGIjo5NAhfjyyIbMgzmNsMy7DjipfZeJisrNcqcfr/DFzntcIoUqC7kfVfLFfQ9JkWVc+E92CUGa4WyEM98mY= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1738258576; c=relaxed/simple; bh=saqK4kIsZxI+5DQ85cuDmpYxXTWmAMmJjllcEfKrsSY=; h=From:To:CC:Subject:Date:Message-ID:In-Reply-To:References: MIME-Version:Content-Type; b=P+oLKzS0cuM1fT+DMLGJJ/sovvJIEHRlCy+TpTYf1g2BMLu6OQWM6nSMcmx/xrUvoZeOBeDdc9nR6m0y4oG7uFLchnG+gjJtiitHZ5kdK9srPhHrBeInbSlSpuDSZDklFYdkMl5RE8FptRGW9na3lpSNy1ExOO6/zBvc9pxljKU= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com; spf=pass smtp.mailfrom=microchip.com; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b=kZBp0Tx4; arc=none smtp.client-ip=68.232.153.233 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=reject dis=none) header.from=microchip.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=microchip.com Authentication-Results: smtp.subspace.kernel.org; dkim=pass (2048-bit key) header.d=microchip.com header.i=@microchip.com header.b="kZBp0Tx4" DKIM-Signature: v=1; a=rsa-sha256; c=relaxed/simple; d=microchip.com; i=@microchip.com; q=dns/txt; s=mchp; t=1738258574; x=1769794574; h=from:to:cc:subject:date:message-id:in-reply-to: references:mime-version:content-transfer-encoding; bh=saqK4kIsZxI+5DQ85cuDmpYxXTWmAMmJjllcEfKrsSY=; b=kZBp0Tx4VLqnJNdhDld1kdReCcjv+59xdrGnDdS8D9blgELdik1JV12A y9KDgUxzHlMgN2o/O63JO1SaUsf9MOIhs/yWlPrv+x1jJb0irFPppgkwG n3pJGv6aBePiz8oEX0UT9zF0ekMZK8Jtdoirx58/kX1Z2mgD/N3d12Saj kN8K1q05vupUYebpPqz7f6zrEaXpKZiX4IUnIF/iYLMjdRnHP1G76jfGD +U7jOEQ1gIfj3/K0IqiIINYRo2t83lGuJxiGDtkOQhl6ozxs2ugPtlF7Y 4eWz61iuDdyh5n/mD5f6gM1Mj9H2hTTjI4fr/PBaCGzmZlekZ3hti2AGm A==; X-CSE-ConnectionGUID: 7iQ0c/B2QHylE8DKLR4q+g== X-CSE-MsgGUID: ehYY8ZpbQe2lcmyKveAkSA== X-IronPort-AV: E=Sophos;i="6.13,246,1732604400"; d="scan'208";a="41090048" X-Amp-Result: SKIPPED(no attachment in message) Received: from unknown (HELO email.microchip.com) ([170.129.1.10]) by esa1.microchip.iphmx.com with ESMTP/TLS/ECDHE-RSA-AES128-GCM-SHA256; 30 Jan 2025 10:36:11 -0700 Received: from chn-vm-ex04.mchp-main.com (10.10.85.152) by chn-vm-ex02.mchp-main.com (10.10.85.144) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_128_GCM_SHA256) id 15.1.2507.35; Thu, 30 Jan 2025 10:35:41 -0700 Received: from ryan-Precision-3630-Tower.microchip.com (10.10.85.11) by chn-vm-ex04.mchp-main.com (10.10.85.152) with Microsoft SMTP Server id 15.1.2507.35 via Frontend Transport; Thu, 30 Jan 2025 10:35:41 -0700 From: To: , , , , , , , , , CC: , , , , , Ryan Wanner Subject: [PATCH 12/16] ARM: at91: PM: Add Backup mode for SAMA7D65 Date: Thu, 30 Jan 2025 10:33:52 -0700 Message-ID: X-Mailer: git-send-email 2.43.0 In-Reply-To: References: Precedence: bulk X-Mailing-List: linux-pm@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 From: Ryan Wanner Add config check that enables Backup mode for SAMA7D65 SoC. Add SHDWC_SR read to clear the status bits once finished exiting low power modes. This is only for SAMA7D65 SoCs. Signed-off-by: Ryan Wanner --- arch/arm/mach-at91/pm.c | 6 +++++- 1 file changed, 5 insertions(+), 1 deletion(-) diff --git a/arch/arm/mach-at91/pm.c b/arch/arm/mach-at91/pm.c index a8cd1300a8f33..5e458254e1f1c 100644 --- a/arch/arm/mach-at91/pm.c +++ b/arch/arm/mach-at91/pm.c @@ -706,6 +706,9 @@ static int at91_pm_enter(suspend_state_t state) static void at91_pm_end(void) { at91_pm_config_ws(soc_pm.data.mode, false); + + if (IS_ENABLED(CONFIG_SOC_SAMA7D65)) + readl(soc_pm.data.shdwc + 0x08); } @@ -1064,7 +1067,8 @@ static int __init at91_pm_backup_init(void) int ret = -ENODEV, located = 0; if (!IS_ENABLED(CONFIG_SOC_SAMA5D2) && - !IS_ENABLED(CONFIG_SOC_SAMA7G5)) + !IS_ENABLED(CONFIG_SOC_SAMA7G5) && + !IS_ENABLED(CONFIG_SOC_SAMA7D65)) return -EPERM; if (!at91_is_pm_mode_active(AT91_PM_BACKUP))