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=-7.0 required=3.0 tests=DKIMWL_WL_HIGH,DKIM_SIGNED, DKIM_VALID,HEADER_FROM_DIFFERENT_DOMAINS,INCLUDES_PATCH,MAILING_LIST_MULTI, SIGNED_OFF_BY,SPF_PASS,UNPARSEABLE_RELAY autolearn=unavailable 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 9A3A2C43381 for ; Wed, 6 Mar 2019 10:13:52 +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 6B48220675 for ; Wed, 6 Mar 2019 10:13:52 +0000 (UTC) Authentication-Results: mail.kernel.org; dkim=pass (2048-bit key) header.d=lists.infradead.org header.i=@lists.infradead.org header.b="OGzNlGW0" DMARC-Filter: OpenDMARC Filter v1.3.2 mail.kernel.org 6B48220675 Authentication-Results: mail.kernel.org; dmarc=none (p=none dis=none) header.from=mediatek.com Authentication-Results: mail.kernel.org; spf=none smtp.mailfrom=linux-arm-kernel-bounces+infradead-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=bombadil.20170209; h=Sender: Content-Transfer-Encoding:Content-Type:Cc:List-Subscribe:List-Help:List-Post: List-Archive:List-Unsubscribe:List-Id:MIME-Version:References:In-Reply-To: Date:To:From:Subject:Message-ID:Reply-To:Content-ID:Content-Description: Resent-Date:Resent-From:Resent-Sender:Resent-To:Resent-Cc:Resent-Message-ID: List-Owner; bh=yxiAmZvbtr9YoA4kjQSE0fZ5m9PmWZApeuk1x9dJDAY=; b=OGzNlGW0W1/IUg xttLME6Gkr7EVjli/RlfMVjDZcP2w/ojOgajj+TD0lMifYV3v51FZMyCv/dDWGR4uN54HfxXMqoRH 0zeEqbFkElW/w5N8LBENGHUICG4TMbQiRuIFRUPra6k9821QLO9u3kBAFjdq7tnr7qiYlv1Ut2oy4 ePrImHr/5PnitmP68NgF6sj3faNQ1belZc/QhC0jLatDnSHJ5CSNDQ5ng4CuAHuhsuS1p5Iv97gbi 90D5/5DAlsHL2nXffE/AeYAyjWen/JzV/+mbth/4NruXkGfgZZcBpvYhogkvELUIsOUrcDODU6FLQ cpElEZtGVVBF0gUifjyw==; Received: from localhost ([127.0.0.1] helo=bombadil.infradead.org) by bombadil.infradead.org with esmtp (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1TYb-0006sX-Ec; Wed, 06 Mar 2019 10:13:49 +0000 Received: from mailgw02.mediatek.com ([216.200.240.185]) by bombadil.infradead.org with esmtps (Exim 4.90_1 #2 (Red Hat Linux)) id 1h1TYX-0006rV-Lo; Wed, 06 Mar 2019 10:13:47 +0000 X-UUID: 1e6df160a0c44bb4a3ec3c512c945393-20190306 X-UUID: 1e6df160a0c44bb4a3ec3c512c945393-20190306 Received: from mtkcas68.mediatek.inc [(172.29.94.19)] by mailgw02.mediatek.com (envelope-from ) (musrelay.mediatek.com ESMTP with TLS) with ESMTP id 1745850708; Wed, 06 Mar 2019 02:13:18 -0800 Received: from MTKMBS01N2.mediatek.inc (172.21.101.79) by MTKMBS62DR.mediatek.inc (172.29.94.18) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 6 Mar 2019 02:13:16 -0800 Received: from MTKCAS06.mediatek.inc (172.21.101.30) by mtkmbs01n2.mediatek.inc (172.21.101.79) with Microsoft SMTP Server (TLS) id 15.0.1395.4; Wed, 6 Mar 2019 18:13:14 +0800 Received: from [172.21.77.4] (172.21.77.4) by MTKCAS06.mediatek.inc (172.21.101.73) with Microsoft SMTP Server id 15.0.1395.4 via Frontend Transport; Wed, 6 Mar 2019 18:13:14 +0800 Message-ID: <1551867194.1001.8.camel@mtksdaap41> Subject: Re: [PATCH V6 8/8] drm/mediatek: fix the rate of parent for hdmi phy in MT2701 From: CK Hu To: wangyan wang Date: Wed, 6 Mar 2019 18:13:14 +0800 In-Reply-To: <20190225020912.29120-9-wangyan.wang@mediatek.com> References: <20190225020912.29120-1-wangyan.wang@mediatek.com> <20190225020912.29120-9-wangyan.wang@mediatek.com> X-Mailer: Evolution 3.10.4-0ubuntu2 MIME-Version: 1.0 X-TM-SNTS-SMTP: BAB93E59A1ECC6EA11CA08B3A7B488FC22AA77AB2DCB7AFBC802E036902B3A4C2000:8 X-MTK: N X-CRM114-Version: 20100106-BlameMichelson ( TRE 0.8.0 (BSD) ) MR-646709E3 X-CRM114-CacheID: sfid-20190306_021345_721511_6720FAF5 X-CRM114-Status: GOOD ( 14.92 ) X-BeenThere: linux-arm-kernel@lists.infradead.org X-Mailman-Version: 2.1.21 Precedence: list List-Id: List-Unsubscribe: , List-Archive: List-Post: List-Help: List-Subscribe: , Cc: Ryder Lee , Philipp Zabel , srv_heupstream@mediatek.com, chunhui dai , Stephen Boyd , Michael Turquette , Sean Wang , linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org, David Airlie , linux-mediatek@lists.infradead.org, Daniel Vetter , Matthias Brugger , Colin Ian King , linux-clk@vger.kernel.org, linux-arm-kernel@lists.infradead.org Content-Type: text/plain; charset="us-ascii" Content-Transfer-Encoding: 7bit Sender: "linux-arm-kernel" Errors-To: linux-arm-kernel-bounces+infradead-linux-arm-kernel=archiver.kernel.org@lists.infradead.org Hi, Wangyan: On Mon, 2019-02-25 at 10:09 +0800, wangyan wang wrote: > From: chunhui dai > > We should not change the rate of parent for hdmi phy when > doing round_rate for this clock. The parent clock of hdmi > phy must be the same as it. We change it when doing set_rate > only. > > Signed-off-by: chunhui dai > Signed-off-by: wangyan wang > --- > drivers/gpu/drm/mediatek/mtk_hdmi_phy.c | 14 -------------- > drivers/gpu/drm/mediatek/mtk_hdmi_phy.h | 3 --- > drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c | 11 +++++++++++ > drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c | 14 ++++++++++++++ > 4 files changed, 25 insertions(+), 17 deletions(-) > > diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c > index 370309d684ec..ca8bc1489f37 100644 > --- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c > +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c > @@ -15,20 +15,6 @@ static const struct phy_ops mtk_hdmi_phy_dev_ops = { > .owner = THIS_MODULE, > }; > > -long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, > - unsigned long *parent_rate) > -{ > - struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > - > - hdmi_phy->pll_rate = rate; > - if (rate <= 74250000) > - *parent_rate = rate; > - else > - *parent_rate = rate / 2; > - > - return rate; > -} > - > u32 mtk_hdmi_phy_read(struct mtk_hdmi_phy *hdmi_phy, u32 offset) > { > return readl(hdmi_phy->regs + offset); > diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h > index 446e2acd1926..c6061ad15ff0 100644 > --- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h > +++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h > @@ -50,9 +50,6 @@ void mtk_hdmi_phy_set_bits(struct mtk_hdmi_phy *hdmi_phy, u32 offset, > void mtk_hdmi_phy_mask(struct mtk_hdmi_phy *hdmi_phy, u32 offset, > u32 val, u32 mask); > struct mtk_hdmi_phy *to_mtk_hdmi_phy(struct clk_hw *hw); > -long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, > - unsigned long *parent_rate); > - > extern struct platform_driver mtk_hdmi_phy_driver; > extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_8173_conf; > extern struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf; > diff --git a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c > index 88dd9e812ca0..33893a180c2e 100644 > --- a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c > +++ b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c > @@ -152,6 +152,17 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, > RG_HDMITX_DRV_IBIAS_MASK); > return 0; > } > + > +static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, > + unsigned long *parent_rate) > +{ > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + > + hdmi_phy->pll_rate = rate; I think you don't need to save the rate into pll_rate here, pll_rate would be set in set_rate() or recalc_rate(). Regards, CK > + > + return rate; > +} > + > static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw, > unsigned long parent_rate) > { > diff --git a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c > index 63dde42521b8..3a339f516613 100644 > --- a/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c > +++ b/drivers/gpu/drm/mediatek/mtk_mt8173_hdmi_phy.c > @@ -285,6 +285,20 @@ static int mtk_hdmi_pll_set_rate(struct clk_hw *hw, unsigned long rate, > return 0; > } > > +static long mtk_hdmi_pll_round_rate(struct clk_hw *hw, unsigned long rate, > + unsigned long *parent_rate) > +{ > + struct mtk_hdmi_phy *hdmi_phy = to_mtk_hdmi_phy(hw); > + > + hdmi_phy->pll_rate = rate; > + if (rate <= 74250000) > + *parent_rate = rate; > + else > + *parent_rate = rate / 2; > + > + return rate; > +} > + > static unsigned long mtk_hdmi_pll_recalc_rate(struct clk_hw *hw, > unsigned long parent_rate) > { _______________________________________________ linux-arm-kernel mailing list linux-arm-kernel@lists.infradead.org http://lists.infradead.org/mailman/listinfo/linux-arm-kernel