From patchwork Wed Jan 13 10:19:16 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 12016391 Return-Path: X-Spam-Checker-Version: SpamAssassin 3.4.0 (2014-02-07) on aws-us-west-2-korg-lkml-1.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-16.8 required=3.0 tests=BAYES_00, HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER,INCLUDES_PATCH, MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,URIBL_BLOCKED,USER_AGENT_GIT autolearn=ham autolearn_force=no version=3.4.0 Received: from mail.kernel.org (mail.kernel.org [198.145.29.99]) by smtp.lore.kernel.org (Postfix) with ESMTP id 3C833C4332B for ; Wed, 13 Jan 2021 10:20:02 +0000 (UTC) Received: from vger.kernel.org (vger.kernel.org [23.128.96.18]) by mail.kernel.org (Postfix) with ESMTP id 08C4C20789 for ; Wed, 13 Jan 2021 10:20:01 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1726801AbhAMKUB (ORCPT ); Wed, 13 Jan 2021 05:20:01 -0500 Received: from lindbergh.monkeyblade.net ([23.128.96.19]:39768 "EHLO lindbergh.monkeyblade.net" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1727037AbhAMKUB (ORCPT ); Wed, 13 Jan 2021 05:20:01 -0500 Received: from andre.telenet-ops.be (andre.telenet-ops.be [IPv6:2a02:1800:120:4::f00:15]) by lindbergh.monkeyblade.net (Postfix) with ESMTPS id 7472BC0617A2 for ; Wed, 13 Jan 2021 02:19:20 -0800 (PST) Received: from ramsan.of.borg ([84.195.186.194]) by andre.telenet-ops.be with bizsmtp id GAKH2400V4C55Sk01AKHci; Wed, 13 Jan 2021 11:19:18 +0100 Received: from rox.of.borg ([192.168.97.57]) by ramsan.of.borg with esmtps (TLS1.3) tls TLS_ECDHE_RSA_WITH_AES_256_GCM_SHA384 (Exim 4.93) (envelope-from ) id 1kzdFF-003EHD-Jl; Wed, 13 Jan 2021 11:19:17 +0100 Received: from geert by rox.of.borg with local (Exim 4.93) (envelope-from ) id 1kzdFF-004oa7-5u; Wed, 13 Jan 2021 11:19:17 +0100 From: Geert Uytterhoeven To: Mark Brown Cc: linux-spi@vger.kernel.org, linux-renesas-soc@vger.kernel.org, linux-sh@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH 2/2] spi: sh-msiof: Fill in controller speed limits Date: Wed, 13 Jan 2021 11:19:16 +0100 Message-Id: <20210113101916.1147695-3-geert+renesas@glider.be> X-Mailer: git-send-email 2.25.1 In-Reply-To: <20210113101916.1147695-1-geert+renesas@glider.be> References: <20210113101916.1147695-1-geert+renesas@glider.be> MIME-Version: 1.0 Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org Fill in the controller speed limits, so the SPI core can use them for validating SPI transfers, and adjust or reject transfers when needed. Signed-off-by: Geert Uytterhoeven --- drivers/spi/spi-sh-msiof.c | 4 ++++ 1 file changed, 4 insertions(+) diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index 90b8aba8a4fd9f32..41ed9ff8fad0d3b3 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -1262,6 +1262,7 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) const struct sh_msiof_chipdata *chipdata; struct sh_msiof_spi_info *info; struct sh_msiof_spi_priv *p; + unsigned long clksrc; int i; int ret; @@ -1337,6 +1338,9 @@ static int sh_msiof_spi_probe(struct platform_device *pdev) /* init controller code */ ctlr->mode_bits = SPI_CPOL | SPI_CPHA | SPI_CS_HIGH; ctlr->mode_bits |= SPI_LSB_FIRST | SPI_3WIRE; + clksrc = clk_get_rate(p->clk); + ctlr->min_speed_hz = DIV_ROUND_UP(clksrc, 1024); + ctlr->max_speed_hz = DIV_ROUND_UP(clksrc, 1 << p->min_div_pow); ctlr->flags = chipdata->ctlr_flags; ctlr->bus_num = pdev->id; ctlr->num_chipselect = p->info->num_chipselect;