From patchwork Tue Oct 2 12:09:24 2018 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Ludovic BARRE X-Patchwork-Id: 10623547 Return-Path: Received: from mail.wl.linuxfoundation.org (pdx-wl-mail.web.codeaurora.org [172.30.200.125]) by pdx-korg-patchwork-2.web.codeaurora.org (Postfix) with ESMTP id 083CB14BD for ; Tue, 2 Oct 2018 12:11:32 +0000 (UTC) Received: from mail.wl.linuxfoundation.org (localhost [127.0.0.1]) by mail.wl.linuxfoundation.org (Postfix) with ESMTP id F0FF82887F for ; Tue, 2 Oct 2018 12:11:31 +0000 (UTC) Received: by mail.wl.linuxfoundation.org (Postfix, from userid 486) id E3A0628884; Tue, 2 Oct 2018 12:11:31 +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=-7.9 required=2.0 tests=BAYES_00,MAILING_LIST_MULTI, RCVD_IN_DNSWL_HI autolearn=ham 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 8DD802887F for ; Tue, 2 Oct 2018 12:11:31 +0000 (UTC) Received: (majordomo@vger.kernel.org) by vger.kernel.org via listexpand id S1727580AbeJBSyM (ORCPT ); Tue, 2 Oct 2018 14:54:12 -0400 Received: from mx08-00178001.pphosted.com ([91.207.212.93]:13547 "EHLO mx07-00178001.pphosted.com" rhost-flags-OK-OK-OK-FAIL) by vger.kernel.org with ESMTP id S1727809AbeJBSxN (ORCPT ); Tue, 2 Oct 2018 14:53:13 -0400 Received: from pps.filterd (m0046660.ppops.net [127.0.0.1]) by mx08-.pphosted.com (8.16.0.21/8.16.0.21) with SMTP id w92C8gou013788; Tue, 2 Oct 2018 14:10:07 +0200 Received: from beta.dmz-eu.st.com (beta.dmz-eu.st.com [164.129.1.35]) by mx08-00178001.pphosted.com with ESMTP id 2msxh6gsnp-1 (version=TLSv1 cipher=ECDHE-RSA-AES256-SHA bits=256 verify=NOT); Tue, 02 Oct 2018 14:10:07 +0200 Received: from zeta.dmz-eu.st.com (zeta.dmz-eu.st.com [164.129.230.9]) by beta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 4072A31; Tue, 2 Oct 2018 12:10:06 +0000 (GMT) Received: from Webmail-eu.st.com (Safex1hubcas21.st.com [10.75.90.44]) by zeta.dmz-eu.st.com (STMicroelectronics) with ESMTP id 043792A42; Tue, 2 Oct 2018 12:10:06 +0000 (GMT) Received: from SAFEX1HUBCAS22.st.com (10.75.90.93) by SAFEX1HUBCAS21.st.com (10.75.90.44) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 2 Oct 2018 14:10:05 +0200 Received: from lmecxl0923.lme.st.com (10.48.0.237) by Webmail-ga.st.com (10.75.90.48) with Microsoft SMTP Server (TLS) id 14.3.361.1; Tue, 2 Oct 2018 14:10:05 +0200 From: Ludovic Barre To: Ulf Hansson , Rob Herring CC: Maxime Coquelin , Alexandre Torgue , , Gerald Baeza , Loic Pallardy , , , , , , Ludovic Barre Subject: [PATCH V4 22/25] mmc: mmci: add clock divider for stm32 sdmmc Date: Tue, 2 Oct 2018 14:09:24 +0200 Message-ID: <1538482167-13819-23-git-send-email-ludovic.Barre@st.com> X-Mailer: git-send-email 2.7.4 In-Reply-To: <1538482167-13819-1-git-send-email-ludovic.Barre@st.com> References: <1538482167-13819-1-git-send-email-ludovic.Barre@st.com> MIME-Version: 1.0 X-Originating-IP: [10.48.0.237] X-Proofpoint-Virus-Version: vendor=fsecure engine=2.50.10434:,, definitions=2018-10-02_03:,, signatures=0 Sender: linux-mmc-owner@vger.kernel.org Precedence: bulk List-ID: X-Mailing-List: linux-mmc@vger.kernel.org X-Virus-Scanned: ClamAV using ClamSMTP From: Ludovic Barre The STM32 sdmmc variant has a different clock divider. Signed-off-by: Ludovic Barre --- drivers/mmc/host/mmci.c | 2 ++ drivers/mmc/host/mmci.h | 2 ++ 2 files changed, 4 insertions(+) diff --git a/drivers/mmc/host/mmci.c b/drivers/mmc/host/mmci.c index 0898cc9..0421e18 100644 --- a/drivers/mmc/host/mmci.c +++ b/drivers/mmc/host/mmci.c @@ -1857,6 +1857,8 @@ static int mmci_probe(struct amba_device *dev, */ if (variant->st_clkdiv) mmc->f_min = DIV_ROUND_UP(host->mclk, 257); + else if (variant->stm32_clkdiv) + mmc->f_min = DIV_ROUND_UP(host->mclk, 2046); else if (variant->explicit_mclk_control) mmc->f_min = clk_round_rate(host->clk, 100000); else diff --git a/drivers/mmc/host/mmci.h b/drivers/mmc/host/mmci.h index f793426..1520289 100644 --- a/drivers/mmc/host/mmci.h +++ b/drivers/mmc/host/mmci.h @@ -216,6 +216,7 @@ struct mmci_host; * @data_cmd_enable: enable value for data commands. * @st_sdio: enable ST specific SDIO logic * @st_clkdiv: true if using a ST-specific clock divider algorithm + * @stm32_clkdiv: true if using a STM32-specific clock divider algorithm * @datactrl_mask_ddrmode: ddr mode mask in datactrl register. * @blksz_datactrl16: true if Block size is at b16..b30 position in datactrl register * @blksz_datactrl4: true if Block size is at b4..b16 position in datactrl @@ -269,6 +270,7 @@ struct variant_data { u8 datacnt_useless:1; u8 st_sdio:1; u8 st_clkdiv:1; + u8 stm32_clkdiv:1; u8 blksz_datactrl16:1; u8 blksz_datactrl4:1; u32 pwrreg_powerup;