From: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
To: dri-devel@lists.freedesktop.org
Cc: linux-renesas-soc@vger.kernel.org,
Kieran Bingham <kieran.bingham@ideasonboard.com>
Subject: [PATCH v2 5/6] arm64: dts: renesas: r8a77990: ebisu: Enable LVDS1 encoder
Date: Wed, 23 Jan 2019 00:54:04 +0200 [thread overview]
Message-ID: <20190122225405.7815-6-laurent.pinchart+renesas@ideasonboard.com> (raw)
In-Reply-To: <20190122225405.7815-1-laurent.pinchart+renesas@ideasonboard.com>
The LVDS1 encoder must supply a pixel clock to the DU for the DPAD
output when the LVDS0 encoder is used. Enable it despite its output not
being connected.
Signed-off-by: Laurent Pinchart <laurent.pinchart+renesas@ideasonboard.com>
---
Changes since v1:
- Add a comment in the DT to explain why the LVDS1 encoder needs to be
enabled.
---
arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts | 7 +++++++
1 file changed, 7 insertions(+)
diff --git a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
index 62bdddcbbae7..800a537bbbe0 100644
--- a/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
+++ b/arch/arm64/boot/dts/renesas/r8a77990-ebisu.dts
@@ -443,6 +443,13 @@
};
&lvds1 {
+ /*
+ * Even though the LVDS1 output is not connected, the encoder must be
+ * enabled to supply a pixel clock to the DU for the DPAD output when
+ * LVDS0 is in use.
+ */
+ status = "okay";
+
clocks = <&cpg CPG_MOD 727>,
<&x13_clk>,
<&extal_clk>;
--
Regards,
Laurent Pinchart
next prev parent reply other threads:[~2019-01-22 22:54 UTC|newest]
Thread overview: 16+ messages / expand[flat|nested] mbox.gz Atom feed top
2019-01-22 22:53 [PATCH v2 0/6] R-Car DU DPAD support for D3 and E3 Laurent Pinchart
2019-01-22 22:54 ` [PATCH v2 1/6] drm: rcar-du: Simplify encoder registration Laurent Pinchart
2019-01-22 22:54 ` [PATCH v2 2/6] drm: rcar-du: lvds: Don't fail probe if output is not connected on D3/E3 Laurent Pinchart
2019-01-22 22:54 ` [PATCH v2 3/6] drm: rcar-du: lvds: Add API to enable/disable clock output Laurent Pinchart
2019-01-22 22:54 ` [PATCH v2 4/6] drm: rcar-du: Turn LVDS clock output on/off for DPAD0 output on D3/E3 Laurent Pinchart
2019-01-22 22:54 ` Laurent Pinchart [this message]
2019-01-23 8:56 ` [PATCH v2 5/6] arm64: dts: renesas: r8a77990: ebisu: Enable LVDS1 encoder Simon Horman
2019-01-23 9:55 ` Laurent Pinchart
2019-01-23 10:03 ` Simon Horman
2019-02-15 11:44 ` Laurent Pinchart
2019-02-25 9:13 ` Simon Horman
2019-01-22 22:54 ` [PATCH v2 6/6] arm64: dts: renesas: r8a77995: draak: " Laurent Pinchart
2019-01-23 8:57 ` Simon Horman
2019-02-25 7:44 ` [PATCH v2 0/6] R-Car DU DPAD support for D3 and E3 Kuninori Morimoto
2019-02-25 8:30 ` Laurent Pinchart
2019-02-25 8:40 ` Kuninori Morimoto
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