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From: wangyan wang <wangyan.wang@mediatek.com>
To: Michael Turquette <mturquette@baylibre.com>,
	Stephen Boyd <sboyd@kernel.org>, CK Hu <ck.hu@mediatek.com>
Cc: wangyan wang <wangyan.wang@mediatek.com>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	David Airlie <airlied@linux.ie>, Daniel Vetter <daniel@ffwll.ch>,
	chunhui dai <chunhui.dai@mediatek.com>,
	Colin Ian King <colin.king@canonical.com>,
	Sean Wang <sean.wang@mediatek.com>,
	Ryder Lee <ryder.lee@mediatek.com>, <linux-clk@vger.kernel.org>,
	<linux-kernel@vger.kernel.org>,
	<linux-arm-kernel@lists.infradead.org>,
	<linux-mediatek@lists.infradead.org>,
	<dri-devel@lists.freedesktop.org>, <srv_heupstream@mediatek.com>
Subject: [PATCH V10 3/5] drm/mediatek: using new factor for tvdpll in MT2701
Date: Tue, 9 Apr 2019 14:53:05 +0800	[thread overview]
Message-ID: <20190409065307.82280-4-wangyan.wang@mediatek.com> (raw)
In-Reply-To: <20190409065307.82280-1-wangyan.wang@mediatek.com>

From: Wangyan Wang <wangyan.wang@mediatek.com>

This is the second step to make MT2701 HDMI stable.
The factor depends on the divider of DPI in MT2701, therefore,
we should fix this factor to the right and new one.
Test: search ok

Reviewed-by: CK Hu <ck.hu@mediatek.com>
Signed-off-by: Wangyan Wang <wangyan.wang@mediatek.com>
---
 drivers/gpu/drm/mediatek/mtk_dpi.c | 8 +++-----
 1 file changed, 3 insertions(+), 5 deletions(-)

diff --git a/drivers/gpu/drm/mediatek/mtk_dpi.c b/drivers/gpu/drm/mediatek/mtk_dpi.c
index 69c6e42dad6b..4a2f4a650494 100644
--- a/drivers/gpu/drm/mediatek/mtk_dpi.c
+++ b/drivers/gpu/drm/mediatek/mtk_dpi.c
@@ -662,13 +662,11 @@ static unsigned int mt8173_calculate_factor(int clock)
 static unsigned int mt2701_calculate_factor(int clock)
 {
 	if (clock <= 64000)
-		return 16;
-	else if (clock <= 128000)
-		return 8;
-	else if (clock <= 256000)
 		return 4;
-	else
+	else if (clock <= 128000)
 		return 2;
+	else
+		return 1;
 }
 
 static const struct mtk_dpi_conf mt8173_conf = {
-- 
2.14.1


  parent reply	other threads:[~2019-04-09  6:53 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2019-04-09  6:53 [PATCH V10 0/5] make mt7623 clock of hdmi stable wangyan wang
2019-04-09  6:53 ` [PATCH V10 1/5] drm/mediatek: remove flag CLK_SET_RATE_PARENT for mt2701 hdmi phy to not propagate rate change to parent wangyan wang
2019-04-09  6:53 ` [PATCH V10 2/5] drm/mediatek: fix the rate and divder of hdmi phy for MT2701 wangyan wang
2019-04-09  6:53 ` wangyan wang [this message]
2019-04-09  6:53 ` [PATCH V10 4/5] drm/mediatek: make implementation of recalc_rate() to match the definition wangyan wang
2019-04-09  6:53 ` [PATCH V10 5/5] drm/mediatek: no change parent rate in round_rate() for mt2701 hdmi phy wangyan wang
2019-04-09  9:55 ` [PATCH V10 0/5] make mt7623 clock of hdmi stable CK Hu

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