linux-kernel - [PATCH v1 3/4] drm/mediatek: fix boot up for 720 and 480 but 1080

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Date:   Tue, 16 Apr 2019 16:58:47 +0200
From:   Frank Wunderlich <frank-w@...lic-files.de>
To:     CK Hu <ck.hu@...iatek.com>, Philipp Zabel <p.zabel@...gutronix.de>,
        David Airlie <airlied@...ux.ie>,
        Daniel Vetter <daniel@...ll.ch>,
        Matthias Brugger <matthias.bgg@...il.com>,
        dri-devel@...ts.freedesktop.org,
        linux-arm-kernel@...ts.infradead.org,
        linux-mediatek@...ts.infradead.org, linux-kernel@...r.kernel.org,
        Rob Herring <robh+dt@...nel.org>,
        Mark Rutland <mark.rutland@....com>,
        devicetree@...r.kernel.org, chunhui dai <chunhui.dai@...iatek.com>,
        Ryder Lee <ryder.lee@...iatek.com>,
        Bibby Hsieh <bibby.hsieh@...iatek.com>
Cc:     Frank Wunderlich <frank-w@...lic-files.de>
Subject: [PATCH v1 3/4] drm/mediatek: fix boot up for 720 and 480 but 1080

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

- 1080 plg in/out with ng/ok
- support other resolutions like 1280x1024

Signed-off-by: chunhui dai <chunhui.dai@...iatek.com>
Signed-off-by: Frank Wunderlich <frank-w@...lic-files.de>
Tested-by: Frank Wunderlich <frank-w@...lic-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,
--
2.17.1