From: Bartosz Golaszewski <bgolaszewski@baylibre.com>
To: Jyri Sarha <jsarha@ti.com>,
Tomi Valkeinen <tomi.valkeinen@ti.com>,
David Airlie <airlied@linux.ie>,
Kevin Hilman <khilman@baylibre.com>,
Michael Turquette <mturquette@baylibre.com>,
Sekhar Nori <nsekhar@ti.com>, Rob Herring <robh+dt@kernel.org>,
Frank Rowand <frowand.list@gmail.com>,
Mark Rutland <mark.rutland@arm.com>,
Laurent Pinchart <laurent.pinchart@ideasonboard.com>,
Peter Ujfalusi <peter.ujfalusi@ti.com>,
Russell King <linux@armlinux.org.uk>
Cc: linux-devicetree <devicetree@vger.kernel.org>,
linux-drm <dri-devel@lists.freedesktop.org>,
LKML <linux-kernel@vger.kernel.org>,
arm-soc <linux-arm-kernel@lists.infradead.org>,
Bartosz Golaszewski <bgolaszewski@baylibre.com>
Subject: [PATCH v5 4/4] ARM: dts: da850: specify the maximum pixel clock rate for tilcdc
Date: Wed, 7 Dec 2016 11:42:45 +0100 [thread overview]
Message-ID: <1481107365-24839-5-git-send-email-bgolaszewski@baylibre.com> (raw)
In-Reply-To: <1481107365-24839-1-git-send-email-bgolaszewski@baylibre.com>
At maximum CPU frequency of 300 MHz the maximum pixel clock frequency
is 37.5 MHz[1]. We must filter out any mode for which the calculated
pixel clock rate would exceed this value.
Specify the max-pixelclock property for the display node for
da850-lcdk.
[1] http://processors.wiki.ti.com/index.php/OMAP-L1x/C674x/AM1x_LCD_Controller_(LCDC)_Throughput_and_Optimization_Techniques
Signed-off-by: Bartosz Golaszewski <bgolaszewski@baylibre.com>
---
arch/arm/boot/dts/da850.dtsi | 1 +
1 file changed, 1 insertion(+)
diff --git a/arch/arm/boot/dts/da850.dtsi b/arch/arm/boot/dts/da850.dtsi
index 3f51e59..ba5bf80 100644
--- a/arch/arm/boot/dts/da850.dtsi
+++ b/arch/arm/boot/dts/da850.dtsi
@@ -452,6 +452,7 @@
compatible = "ti,da850-tilcdc";
reg = <0x213000 0x1000>;
interrupts = <52>;
+ max-pixelclock = <37500>;
status = "disabled";
};
};
--
2.9.3
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prev parent reply other threads:[~2016-12-07 10:42 UTC|newest]
Thread overview: 11+ messages / expand[flat|nested] mbox.gz Atom feed top
2016-12-07 10:42 [PATCH v5 0/4] ARM: dts: da850: tilcdc related DT changes Bartosz Golaszewski
2016-12-07 10:42 ` [PATCH v5 1/4] ARM: dts: da850: rename the display node label Bartosz Golaszewski
2016-12-07 10:42 ` [PATCH v5 2/4] drm: bridge: add support for TI ths8135 Bartosz Golaszewski
2016-12-07 10:45 ` Bartosz Golaszewski
[not found] ` <CAMpxmJX9b3UqNz_nERH-N58Yw3jkSZ1P+PjjA51x3wTC0So7mQ-JsoAwUIsXosN+BqQ9rBEUg@public.gmane.org>
2016-12-07 14:23 ` Laurent Pinchart
[not found] ` <1481107365-24839-3-git-send-email-bgolaszewski-rdvid1DuHRBWk0Htik3J/w@public.gmane.org>
2016-12-12 16:45 ` Rob Herring
2016-12-12 16:49 ` Laurent Pinchart
2016-12-07 10:42 ` [PATCH v5 3/4] ARM: dts: da850-lcdk: add the vga-bridge node Bartosz Golaszewski
2016-12-07 14:25 ` Laurent Pinchart
2016-12-07 14:30 ` Bartosz Golaszewski
2016-12-07 10:42 ` Bartosz Golaszewski [this message]
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