linux-kernel - [PATCH V5 7/8] drm/mediatek: using new factor for tvdpll in MT2701

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Date:   Wed, 20 Feb 2019 10:53:56 +0800
From:   wangyan wang <wangyan.wang@...iatek.com>
To:     Michael Turquette <mturquette@...libre.com>,
        Stephen Boyd <sboyd@...nel.org>, CK Hu <ck.hu@...iatek.com>
CC:     wangyan wang <wangyan.wang@...iatek.com>,
        Matthias Brugger <matthias.bgg@...il.com>,
        Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        chunhui dai <chunhui.dai@...iatek.com>,
        Colin Ian King <colin.king@...onical.com>,
        Sean Wang <sean.wang@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>,
        <linux-mediatek@...ts.infradead.org>,
        <dri-devel@...ts.freedesktop.org>, <srv_heupstream@...iatek.com>
Subject: [PATCH V5 7/8] drm/mediatek: using new factor for tvdpll in MT2701

From: chunhui dai <chunhui.dai@...iatek.com>

The factor depends on the divider of DPI in MT2701, therefore,
we should fix this factor to the right and new one.

Signed-off-by: chunhui dai <chunhui.dai@...iatek.com>
Signed-off-by: wangyan wang <wangyan.wang@...iatek.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