From patchwork Tue Jul 30 03:20:38 2024 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Devyn Liu X-Patchwork-Id: 13746478 Received: from szxga05-in.huawei.com (szxga05-in.huawei.com [45.249.212.191]) (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 E331C1854; Tue, 30 Jul 2024 03:20:50 +0000 (UTC) Authentication-Results: smtp.subspace.kernel.org; arc=none smtp.client-ip=45.249.212.191 ARC-Seal: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722309652; cv=none; b=ACyMqfCPqgzeJTUS0htxQT5dtF+hY9RyDLvNarVnYP2NDWuYEWO2FzDGobzP4Iatvos4NybXumIxgD15B/P/SgwIowkB3gKNTthiPM+SYTyRJiAvzV1pXOAMsRc3CCqR3bW+jbXVwGaSiIy2Eabu+s10IaQ126+r6WxOYdxTqTA= ARC-Message-Signature: i=1; a=rsa-sha256; d=subspace.kernel.org; s=arc-20240116; t=1722309652; c=relaxed/simple; bh=tdoD4uHVjnuSZ6gIsaKJasSt28EnX8TfA8PXN0KJ9H4=; h=From:To:CC:Subject:Date:Message-ID:MIME-Version:Content-Type; b=B71d8kpGF8sCtex+9okRfDnBxB9dkeOirF9ms0xEk72UNBEa0yrKFsx3dO1xu16LograLLuZE5bDWcz62zhBgDTRj1Ev8rBm5p91MAJCbNq/criLIv+9+Ayqkob4BMBqlYzr9Ubfco5ce8wxjPqTsoAt3WDr+ab7V9jbQbFv1kM= ARC-Authentication-Results: i=1; smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com; spf=pass smtp.mailfrom=huawei.com; arc=none smtp.client-ip=45.249.212.191 Authentication-Results: smtp.subspace.kernel.org; dmarc=pass (p=quarantine dis=none) header.from=huawei.com Authentication-Results: smtp.subspace.kernel.org; spf=pass smtp.mailfrom=huawei.com Received: from mail.maildlp.com (unknown [172.19.163.17]) by szxga05-in.huawei.com (SkyGuard) with ESMTP id 4WY0k20KDBz28fsh; Tue, 30 Jul 2024 11:16:10 +0800 (CST) Received: from kwepemm600002.china.huawei.com (unknown [7.193.23.29]) by mail.maildlp.com (Postfix) with ESMTPS id 20C531A0188; Tue, 30 Jul 2024 11:20:42 +0800 (CST) Received: from localhost.huawei.com (10.90.30.45) by kwepemm600002.china.huawei.com (7.193.23.29) with Microsoft SMTP Server (version=TLS1_2, cipher=TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384) id 15.1.2507.39; Tue, 30 Jul 2024 11:20:41 +0800 From: Devyn Liu To: , CC: , , , , , , , , , , Subject: [PATCH 0/2] spi: hisi-kunpeng: Set verification for speed_hz and max_frequency Date: Tue, 30 Jul 2024 11:20:38 +0800 Message-ID: <20240730032040.3156393-1-liudingyuan@huawei.com> X-Mailer: git-send-email 2.33.0 Precedence: bulk X-Mailing-List: linux-spi@vger.kernel.org List-Id: List-Subscribe: List-Unsubscribe: MIME-Version: 1.0 X-ClientProxiedBy: dggems702-chm.china.huawei.com (10.3.19.179) To kwepemm600002.china.huawei.com (7.193.23.29) The speed_hz is specified by user, while the max_frequency is a firmware-provided parameter for the SPI controller. Both are used in the calculation of clk_div. To avoid calculation results outside of a reasonable range and to prevent division by zero errors, configuration for validation of speed_hz and max_frequency is added in the code. Devyn Liu (2): spi: hisi-kunpeng: Add validation for the minimum value of speed_hz spi: hisi-kunpeng: Add verification for the max_frequency provided by the firmware drivers/spi/spi-hisi-kunpeng.c | 4 ++++ 1 file changed, 4 insertions(+)