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From: Frank Wunderlich <frank-w@public-files.de>
To: linux-mediatek@lists.infradead.org
Cc: Chun-Kuang Hu <chunkuang.hu@kernel.org>,
	Philipp Zabel <p.zabel@pengutronix.de>,
	Frank Wunderlich <frank-w@public-files.de>,
	David Airlie <airlied@linux.ie>,
	chunhui dai <chunhui.dai@mediatek.com>,
	linux-kernel@vger.kernel.org, dri-devel@lists.freedesktop.org,
	Daniel Vetter <daniel@ffwll.ch>,
	Matthias Brugger <matthias.bgg@gmail.com>,
	linux-arm-kernel@lists.infradead.org
Subject: [PATCH v2 2/5] drm/mediatek: fix boot up for 720 and 480 but 1080
Date: Tue, 28 Jul 2020 13:17:57 +0200
Message-ID: <20200728111800.77641-3-frank-w@public-files.de> (raw)
In-Reply-To: <20200728111800.77641-1-frank-w@public-files.de>

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

- disable tmds on phy on mt2701
- support other resolutions like 1280x1024

without this Patch i see flickering on my TFT (1280x1024),
so i guess clock is wrong.

Signed-off-by: chunhui dai <chunhui.dai@mediatek.com>
Signed-off-by: Frank Wunderlich <frank-w@public-files.de>
Tested-by: Frank Wunderlich <frank-w@public-files.de>
---
 drivers/gpu/drm/mediatek/mtk_hdmi_phy.c        | 3 +++
 drivers/gpu/drm/mediatek/mtk_hdmi_phy.h        | 1 +
 drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c | 1 +
 3 files changed, 5 insertions(+)

diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
index 5223498502c4..edadb7a700f1 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.c
@@ -184,6 +184,9 @@ static int mtk_hdmi_phy_probe(struct platform_device *pdev)
 		return PTR_ERR(phy_provider);
 	}

+	if (hdmi_phy->conf->pll_default_off)
+		hdmi_phy->conf->hdmi_phy_disable_tmds(hdmi_phy);
+
 	return of_clk_add_provider(dev->of_node, of_clk_src_simple_get,
 				   hdmi_phy->pll);
 }
diff --git a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
index 2d8b3182470d..f472fdeb63dc 100644
--- a/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
+++ b/drivers/gpu/drm/mediatek/mtk_hdmi_phy.h
@@ -22,6 +22,7 @@ struct mtk_hdmi_phy;
 struct mtk_hdmi_phy_conf {
 	bool tz_disabled;
 	unsigned long flags;
+	bool pll_default_off;
 	const struct clk_ops *hdmi_phy_clk_ops;
 	void (*hdmi_phy_enable_tmds)(struct mtk_hdmi_phy *hdmi_phy);
 	void (*hdmi_phy_disable_tmds)(struct mtk_hdmi_phy *hdmi_phy);
diff --git a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
index d3cc4022e988..6fbedacfc1e8 100644
--- a/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
+++ b/drivers/gpu/drm/mediatek/mtk_mt2701_hdmi_phy.c
@@ -239,6 +239,7 @@ static void mtk_hdmi_phy_disable_tmds(struct mtk_hdmi_phy *hdmi_phy)
 struct mtk_hdmi_phy_conf mtk_hdmi_phy_2701_conf = {
 	.tz_disabled = true,
 	.flags = CLK_SET_RATE_GATE,
+	.pll_default_off = true,
 	.hdmi_phy_clk_ops = &mtk_hdmi_phy_pll_ops,
 	.hdmi_phy_enable_tmds = mtk_hdmi_phy_enable_tmds,
 	.hdmi_phy_disable_tmds = mtk_hdmi_phy_disable_tmds,
--
2.25.1


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  parent reply index

Thread overview: 19+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2020-07-28 11:17 [PATCH v2 0/5] make hdmi work on bananapi-r2 Frank Wunderlich
2020-07-28 11:17 ` [PATCH v2 1/5] drm/mediatek: config component output by device node port Frank Wunderlich
2020-08-02  0:03   ` Chun-Kuang Hu
2020-08-02  8:05     ` Aw: " Frank Wunderlich
2020-08-02 23:47       ` Chun-Kuang Hu
2020-08-03 10:42         ` Aw: " Frank Wunderlich
2020-08-03 16:27           ` Chun-Kuang Hu
2020-08-03 18:02             ` Frank Wunderlich
2020-08-04  9:53             ` Aw: " Frank Wunderlich
2020-07-28 11:17 ` Frank Wunderlich [this message]
2020-08-02  0:08   ` [PATCH v2 2/5] drm/mediatek: fix boot up for 720 and 480 but 1080 Chun-Kuang Hu
2020-08-02  4:42     ` Frank Wunderlich
2020-08-02 23:38       ` Chun-Kuang Hu
2020-07-28 11:17 ` [PATCH v2 3/5] drm: Add get_possible_crtc API for dpi, dsi Frank Wunderlich
2020-08-02  3:02   ` Chun-Kuang Hu
2020-07-28 11:17 ` [PATCH v2 4/5] drm/mediatek: dpi/dsi: change the getting possible_crtc way Frank Wunderlich
2020-08-02  3:07   ` Chun-Kuang Hu
2020-08-02  8:17     ` Frank Wunderlich
2020-07-28 11:18 ` [PATCH v2 5/5] arm: dts: mt7623: add display subsystem related device nodes Frank Wunderlich

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