[linux-sunxi] Re: [PATCH v4 1/2] drm/bridge: dumb-vga-dac: Support a VDD regulator supply

On Thu, Nov 17, 2016 at 3:48 PM, Archit Taneja wrote: > Hi, > > Thanks for the patch. > > > On 11/16/2016 09:12 PM, Chen-Yu Tsai wrote: >> >> Some dumb VGA DACs are active components which require external power. >> Add support for specifying a regulator as its power

Re: [linux-sunxi] About DRM simple panel and DTS files for A33 Q8 Tablets

Hi Hans, On Tue, Nov 08, 2016 at 08:24:11PM +0100, Hans de Goede wrote: > > > > then we don't really need two different device > > > > trees in the first place, do we? > > > > > > It all depends on how closely we want to couple u-boot and the kernel. > > > > > > Either we need to have u-boot

[linux-sunxi] Re: [PATCH v5 1/7] drm: sunxi: Add a basic DRM driver for Allwinner DE2

On Tue, Nov 08, 2016 at 03:37:52PM +0100, Jean-Francois Moine wrote: > On Mon, 7 Nov 2016 23:37:41 +0100 > Maxime Ripard wrote: > > > Hi, > > > > On Fri, Oct 28, 2016 at 07:34:20PM +0200, Jean-Francois Moine wrote: > > > On Fri, 28 Oct 2016 00:03:16 +0200 > > >

[linux-sunxi] [PATCH v4 2/2] ARM: dts: sun6i: hummingbird-a31: Enable display output through VGA bridge

The Hummingbird A31 board has a VGA DAC which converts RGB output from the LCD interface to VGA analog signals. Add nodes for the VGA DAC, its power supply, and enable this part of the display pipeline. Signed-off-by: Chen-Yu Tsai --- arch/arm/boot/dts/sun6i-a31-hummingbird.dts

[linux-sunxi] [PATCH v4 0/2] ARM: dts: sun6i: hummingbird-a31: Enable display output through VGA bridge

Hi, This is v4 of my sun6i DRM/KMS display enablement series. It adds regulator support to the dumb-vga-dac bridge and enables the VGA output on the A31 Hummingbird. Changes since v3: - Add Rob's Ack. - Fix up enable/disable callbacks as Archit suggested. - Dropped pinmux settings for

[linux-sunxi] [PATCH v4 1/2] drm/bridge: dumb-vga-dac: Support a VDD regulator supply

Some dumb VGA DACs are active components which require external power. Add support for specifying a regulator as its power supply. Signed-off-by: Chen-Yu Tsai Acked-by: Rob Herring --- .../bindings/display/bridge/dumb-vga-dac.txt | 2 ++

[linux-sunxi] [PATCH] drm/sun4i: tcon: Initialize regmap after enabling bus clocks

If we attempt to read/write the TCON registers before the bus clock is enabled, those accesses get ignored. In practice this almost never occurs because U-boot had already enabled the bus clock as part of its firmware provided framebuffer (simplefb). Fixes: 9026e0d122ac ("drm: Add Allwinner A10

[linux-sunxi] [PATCH] drm/sun4i: Only count TCON endpoints as valid outputs

The sun4i DRM driver counts the number of endpoints it found and registers the whole DRM pipeline if any endpoints are found. However, if the TCON and its child endpoints (LCD panels, TV encoder, HDMI encoder, MIPI DSI encoder, etc.) aren't found, that means we don't have any usable CRTCs, and