From mboxrd@z Thu Jan 1 00:00:00 1970 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,DKIMWL_WL_HIGH, DKIM_SIGNED,DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_CR_TRAILER, INCLUDES_PATCH,MAILING_LIST_MULTI,SPF_HELO_NONE,SPF_PASS,UNPARSEABLE_RELAY, 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 47FEEC433DB for ; Tue, 30 Mar 2021 15:56:02 +0000 (UTC) Received: from desiato.infradead.org (desiato.infradead.org [90.155.92.199]) (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 C325C619C0 for ; Tue, 30 Mar 2021 15:56:01 +0000 (UTC) DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org C325C619C0 Authentication-Results: mail.kernel.org; dmarc=fail (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=lists.infradead.org; s=desiato.20200630; 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=nFAElmwvdK+XJHrgA2zvIfbJtfcS2PO6XAqbx1Eg3kA=; b=XE5zpLHL94w+StBRMxA8xzzy0 MktXtanJnq3mJBLWYL2xxdmQ7Q2msU85eAgMoPwi+4IWWlTdWHse2wXW390Bafs70lpw+JwUGkZkU PnQ9sCPxCWrL/JG5Q1+v3z2MIgDJTA/3OMXoq7++y+CkGJFqZero3eHcn2BarlMymbDxw4g9h6IYl WSurJbkq5BvpeS4kwpbWRls7IgbQvJQF2+RwNoG/qKZyvIyPFnYSc2EqL1RzbNkS1rHjhEi/i1j52 sJzMZtQ6x5/y8hljHblen+1oKBIgVsP+aeswJHnibAhuBvDX03qzZvgmLpxvblv2xKxHTkwNzFg0s SF3NJMgIQ==; Received: from localhost ([::1] helo=desiato.infradead.org) by desiato.infradead.org with esmtp (Exim 4.94 #2 (Red Hat Linux)) id 1lRGhJ-004GfB-Pd; Tue, 30 Mar 2021 15:54:30 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by desiato.infradead.org with esmtps (Exim 4.94 #2 (Red Hat Linux)) id 1lRGgl-004GYe-9j; Tue, 30 Mar 2021 15:53:57 +0000 X-UUID: 27a82f8ad07d41179b48d4d5768ce6cc-20210330 DKIM-Signature: v=1; a=rsa-sha256; q=dns/txt; c=relaxed/relaxed; d=mediatek.com; s=dk; h=Content-Transfer-Encoding:Content-Type:MIME-Version:References:In-Reply-To:Message-ID:Date:Subject:CC:To:From; bh=Wr7OqfMZ053MusTJu/z+VocLvngnE0TDREtT13ee894=; b=P6AF6UVnsg5ccVpaHqw+Mv/WrX1xihFP/yybTX4o9QcJCjy9Xh/CJRK6Duuso6slZMXPuEOzaNgdhKONRk6zxU9bd7wErdsWaHUv8q0u6OU3f10FMydKKNbCsjqteZZbO3EvYtE9EG+tN6EPjBQ+UPrT4pL63ndwXRue1uIDCpQ=; X-UUID: 27a82f8ad07d41179b48d4d5768ce6cc-20210330 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLSv1.2 ECDHE-RSA-AES256-SHA384 256/256) with ESMTP id 191459149; Tue, 30 Mar 2021 07:53:47 -0800 Received: from MTKMBS33N1.mediatek.inc (172.27.4.75) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 30 Mar 2021 08:53:44 -0700 Received: from MTKCAS32.mediatek.inc (172.27.4.184) by MTKMBS33N1.mediatek.inc (172.27.4.75) with Microsoft SMTP Server (TLS) id 15.0.1497.2; Tue, 30 Mar 2021 23:53:34 +0800 Received: from mszsdaap41.gcn.mediatek.inc (10.16.6.141) by MTKCAS32.mediatek.inc (172.27.4.170) with Microsoft SMTP Server id 15.0.1497.2 via Frontend Transport; Tue, 30 Mar 2021 23:53:34 +0800 From: Jitao Shi To: Rob Herring , Mark Rutland , Matthias Brugger , Daniel Vetter , David Airlie , , CC: , , , , , , , , , , , , Jitao Shi Subject: [PATCH 1/3] drm/mediatek: dpi dual edge sample mode support Date: Tue, 30 Mar 2021 23:53:28 +0800 Message-ID: <20210330155330.28759-2-jitao.shi@mediatek.com> X-Mailer: git-send-email 2.12.5 In-Reply-To: <20210330155330.28759-1-jitao.shi@mediatek.com> References: <20210330155330.28759-1-jitao.shi@mediatek.com> MIME-Version: 1.0 X-TM-SNTS-SMTP: 4E04AEDD8294558B6CA67C7A5725B4939BD2C14C727429A5AA679777471F38242000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20210330_165355_794120_1F0D0B3E X-CRM114-Status: GOOD ( 11.85 ) 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: , Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+linux-arm-kernel=archiver.kernel.org@lists.infradead.org DPI can sample on falling, rising or both edge. When DPI sample the data both rising and falling edge. It can reduce half data io pins. Signed-off-by: Jitao Shi --- drivers/gpu/drm/mediatek/mtk_dpi.c | 12 ++++++++++++ 1 file changed, 12 insertions(+) diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c index 52f11a63a330..ccd681a2a4c2 100644 --- a/drivers/gpu/drm/mediatek/mtk_dpi.c +++ b/drivers/gpu/drm/mediatek/mtk_dpi.c @@ -81,6 +81,7 @@ struct mtk_dpi { struct pinctrl *pinctrl; struct pinctrl_state *pins_gpio; struct pinctrl_state *pins_dpi; + bool ddr_edge_sel; int refcount; }; @@ -119,6 +120,7 @@ struct mtk_dpi_conf { unsigned int (*cal_factor)(int clock); u32 reg_h_fre_con; bool edge_sel_en; + bool dual_edge; }; static void mtk_dpi_mask(struct mtk_dpi *dpi, u32 offset, u32 val, u32 mask) @@ -378,6 +380,15 @@ static void mtk_dpi_config_color_format(struct mtk_dpi *dpi, } } +static void mtk_dpi_dual_edge(struct mtk_dpi *dpi) +{ + if (dpi->conf->dual_edge) { + mtk_dpi_mask(dpi, DPI_DDR_SETTING, DDR_EN | DDR_4PHASE, + DDR_EN | DDR_4PHASE); + mtk_dpi_mask(dpi, DPI_OUTPUT_SETTING, dpi->ddr_edge_sel ? EDGE_SEL : 0, EDGE_SEL); + } +} + static void mtk_dpi_power_off(struct mtk_dpi *dpi) { if (WARN_ON(dpi->refcount == 0)) @@ -516,6 +527,7 @@ static int mtk_dpi_set_display_mode(struct mtk_dpi *dpi, mtk_dpi_config_yc_map(dpi, dpi->yc_map); mtk_dpi_config_color_format(dpi, dpi->color_format); mtk_dpi_config_2n_h_fre(dpi); + mtk_dpi_dual_edge(dpi); mtk_dpi_config_disable_edge(dpi); mtk_dpi_sw_reset(dpi, false); -- 2.12.5 _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel