From patchwork Wed Sep 22 10:31:10 2021 Content-Type: text/plain; charset="utf-8" MIME-Version: 1.0 Content-Transfer-Encoding: 7bit X-Patchwork-Submitter: Chin-Ting Kuo X-Patchwork-Id: 12510089 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=-18.2 required=3.0 tests=BAYES_00,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,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 E9523C433F5 for ; Wed, 22 Sep 2021 10:34:54 +0000 (UTC) Received: from bombadil.infradead.org (bombadil.infradead.org [198.137.202.133]) (using TLSv1.2 with cipher ECDHE-RSA-AES256-GCM-SHA384 (256/256 bits)) (No client certificate requested) by mail.kernel.org (Postfix) with ESMTPS id B54D86124C for ; Wed, 22 Sep 2021 10:34:54 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.4.1 mail.kernel.org B54D86124C Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=aspeedtech.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=bombadil.20210309; h=Sender: Content-Transfer-Encoding:Content-Type:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Message-ID:Date:Subject:CC:To:From:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=8icgUNjx2quznp/yG7o7EMopQzZiK/g3QU7i7S6FuAI=; b=jZm8ruwa/Avw1W AG4MQn9bKRqsojdcfSDfzy6QNeKN1+rzMBzdxlc2oqOJhFVBtw/OJ2dmmBaqLknMSYsKUbPwlyiP8 trJc1U6sIpNUSySSh2jcWzNZ3fE3ImxCLVeCmnyWS8COG+HSGgxuSNRzFlVngiKiPRAg3ef5Yu5z8 QgoYhjMKkrxl7y6E9Umvrgxg2ZFFQ1H48m3pQ9zayLIrihWTYAAvqhJFlvuTBhEXgid68PgINyCTk Nx5r6A0PGfJ6o7Zm1eEfxQsEHns1nDVe4m/uy83gAEaWY7VY1qpuXDURaE5ut8S4FSrj6Eys6FDMQ uwLI9mLGZ+Mv6L3yQCTA==; Received: from localhost ([::1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.94.2 #2 (Red Hat Linux)) id 1mSzYu-007pa9-O0; Wed, 22 Sep 2021 10:33:12 +0000 Received: from [211.20.114.71] (helo=twspam01.aspeedtech.com) by bombadil.infradead.org with esmtps (Exim 4.94.2 #2 (Red Hat Linux)) id 1mSzXn-007pGi-T5 for linux-arm-kernel@lists.infradead.org; Wed, 22 Sep 2021 10:32:05 +0000 Received: from mail.aspeedtech.com ([192.168.0.24]) by twspam01.aspeedtech.com with ESMTP id 18MAB8JN012566; Wed, 22 Sep 2021 18:11:08 +0800 (GMT-8) (envelope-from chin-ting_kuo@aspeedtech.com) Received: from localhost.localdomain (192.168.10.9) by TWMBX02.aspeed.com (192.168.0.24) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Wed, 22 Sep 2021 18:31:26 +0800 From: Chin-Ting Kuo To: , , , , , , , , , , , , CC: , Subject: [PATCH 04/10] mmc: Add invert flag for clock phase signedness Date: Wed, 22 Sep 2021 18:31:10 +0800 Message-ID: <20210922103116.30652-5-chin-ting_kuo@aspeedtech.com> X-Mailer: git-send-email 2.17.1 In-Reply-To: <20210922103116.30652-1-chin-ting_kuo@aspeedtech.com> References: <20210922103116.30652-1-chin-ting_kuo@aspeedtech.com> MIME-Version: 1.0 X-Originating-IP: [192.168.10.9] X-ClientProxiedBy: TWMBX02.aspeed.com (192.168.0.24) To TWMBX02.aspeed.com (192.168.0.24) X-DNSRBL: X-MAIL: twspam01.aspeedtech.com 18MAB8JN012566 X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210922_033204_250607_5F2E4E44 X-CRM114-Status: GOOD ( 12.61 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.34 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org The clock phase degree may be between -360 to 360. If the data signal is leading to the clock, the signedness of clock phase is postive, otherwise, the signedness is negative. Signed-off-by: Chin-Ting Kuo --- drivers/mmc/core/host.c | 10 ++++++---- include/linux/mmc/host.h | 2 ++ 2 files changed, 8 insertions(+), 4 deletions(-) diff --git a/drivers/mmc/core/host.c b/drivers/mmc/core/host.c index d4683b1d263f..c2de7cbc7838 100644 --- a/drivers/mmc/core/host.c +++ b/drivers/mmc/core/host.c @@ -214,14 +214,16 @@ static void mmc_retune_timer(struct timer_list *t) static void mmc_of_parse_timing_phase(struct device *dev, const char *prop, struct mmc_clk_phase *phase) { - int degrees[2] = {0}; + int degrees[4] = {0}; int rc; - rc = device_property_read_u32_array(dev, prop, degrees, 2); + rc = device_property_read_u32_array(dev, prop, degrees, 4); phase->valid = !rc; if (phase->valid) { - phase->in_deg = degrees[0]; - phase->out_deg = degrees[1]; + phase->inv_in_deg = degrees[0] ? true : false; + phase->in_deg = degrees[1]; + phase->inv_out_deg = degrees[2] ? true : false; + phase->out_deg = degrees[3]; } } diff --git a/include/linux/mmc/host.h b/include/linux/mmc/host.h index 0c0c9a0fdf57..3c13010683e0 100644 --- a/include/linux/mmc/host.h +++ b/include/linux/mmc/host.h @@ -82,7 +82,9 @@ struct mmc_ios { struct mmc_clk_phase { bool valid; + bool inv_in_deg; u16 in_deg; + bool inv_out_deg; u16 out_deg; };