From patchwork Fri Aug 12 16:38:38 2016 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Geert Uytterhoeven X-Patchwork-Id: 9277447 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork.web.codeaurora.org (Postfix) with ESMTP id D8ABE600CB for ; Fri, 12 Aug 2016 16:39:03 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id CB37728AA7 for ; Fri, 12 Aug 2016 16:39:03 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id C082128AA9; Fri, 12 Aug 2016 16:39:03 +0000 (UTC) X-Spam-Checker-Version: SpamAssassin 3.3.1 (2010-03-16) on pdx-wl-mail.web.codeaurora.org X-Spam-Level: X-Spam-Status: No, score=-6.9 required=2.0 tests=BAYES_00,RCVD_IN_DNSWL_HI autolearn=unavailable version=3.3.1 Received: from vger.kernel.org (vger.kernel.org [209.132.180.67]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id 755A528AA7 for ; Fri, 12 Aug 2016 16:39:03 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1752946AbcHLQi5 (ORCPT ); Fri, 12 Aug 2016 12:38:57 -0400 Received: from baptiste.telenet-ops.be ([195.130.132.51]:51425 "EHLO baptiste.telenet-ops.be" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1752869AbcHLQiz (ORCPT ); Fri, 12 Aug 2016 12:38:55 -0400 Received: from ayla.of.borg ([84.193.137.253]) by baptiste.telenet-ops.be with bizsmtp id WGet1t0055UCtCs01GeteM; Fri, 12 Aug 2016 18:38:53 +0200 Received: from ramsan.of.borg ([192.168.97.29] helo=ramsan) by ayla.of.borg with esmtp (Exim 4.82) (envelope-from ) id 1bYFTw-0006E6-VM; Fri, 12 Aug 2016 18:38:52 +0200 Received: from geert by ramsan with local (Exim 4.82) (envelope-from ) id 1bYFTy-0007Zz-6N; Fri, 12 Aug 2016 18:38:54 +0200 From: Geert Uytterhoeven To: linux-renesas-soc@vger.kernel.org Cc: linux-spi@vger.kernel.org, linux-clk@vger.kernel.org, Geert Uytterhoeven Subject: [PATCH/PROTO 2/9 common] spi: sh-msiof: Print max and transfer frequency Date: Fri, 12 Aug 2016 18:38:38 +0200 Message-Id: <1471019925-29083-3-git-send-email-geert+renesas@glider.be> X-Mailer: git-send-email 1.9.1 In-Reply-To: <1471019925-29083-1-git-send-email-geert+renesas@glider.be> References: <1471019925-29083-1-git-send-email-geert+renesas@glider.be> Sender: linux-spi-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-spi@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP Not-Signed-off-by: Geert Uytterhoeven --- Not intended for upstream merge. --- drivers/spi/spi-sh-msiof.c | 17 +++++++++++++++++ 1 file changed, 17 insertions(+) diff --git a/drivers/spi/spi-sh-msiof.c b/drivers/spi/spi-sh-msiof.c index ffa5efdf266a8276..72f80a088cddd395 100644 --- a/drivers/spi/spi-sh-msiof.c +++ b/drivers/spi/spi-sh-msiof.c @@ -272,6 +272,13 @@ static void sh_msiof_spi_set_clk_regs(struct sh_msiof_spi_priv *p, k = min_t(int, k, ARRAY_SIZE(sh_msiof_spi_div_table) - 1); scr = sh_msiof_spi_div_table[k].brdv | SCR_BRPS(brps); + dev_info(&p->pdev->dev, "clk at %lu Hz, brps = %u, brdv = %u%s\n", + parent_rate, brps, sh_msiof_spi_div_table[k].div, + ((sh_msiof_spi_div_table[k].div == 1 && brps > 2) || + (brps > 32)) ? " INVALID!" : ""); + dev_info(&p->pdev->dev, "wanted: %u Hz, actual: %lu Hz\n", spi_hz, + parent_rate / sh_msiof_spi_div_table[k].div / brps); + sh_msiof_write(p, TSCR, scr); if (!(p->master->flags & SPI_MASTER_MUST_TX)) sh_msiof_write(p, RSCR, scr); @@ -523,6 +530,16 @@ static int sh_msiof_spi_setup(struct spi_device *spi) { struct device_node *np = spi->master->dev.of_node; struct sh_msiof_spi_priv *p = spi_master_get_devdata(spi->master); + u32 max_speed_hz, min_speed_hz; + unsigned long rate; + + rate = clk_get_rate(p->clk); + max_speed_hz = rate; + min_speed_hz = rate / 1024; + + dev_info(&p->pdev->dev, + "%s: master speed min %u max %u, device speed max = %u\n", + __func__, min_speed_hz, max_speed_hz, spi->max_speed_hz); pm_runtime_get_sync(&p->pdev->dev);