forked from Minki/linux
dt-bindings: add document for analogix display port driver
Analogix dp driver is split from exynos dp driver, so we just make an copy of exynos_dp.txt, and then simplify exynos_dp.txt Beside update some exynos dtsi file with the latest change according to the devicetree binding documents. Acked-by: Rob Herring <robh@kernel.org> Signed-off-by: Yakir Yang <ykk@rock-chips.com>
This commit is contained in:
Yakir Yang
parent
793ce4eb84
commit
704330615b
@ -0,0 +1,50 @@
|
||||
Analogix Display Port bridge bindings
|
||||
|
||||
Required properties for dp-controller:
|
||||
-compatible:
|
||||
platform specific such as:
|
||||
* "samsung,exynos5-dp"
|
||||
* "rockchip,rk3288-dp"
|
||||
-reg:
|
||||
physical base address of the controller and length
|
||||
of memory mapped region.
|
||||
-interrupts:
|
||||
interrupt combiner values.
|
||||
-clocks:
|
||||
from common clock binding: handle to dp clock.
|
||||
-clock-names:
|
||||
from common clock binding: Shall be "dp".
|
||||
-interrupt-parent:
|
||||
phandle to Interrupt combiner node.
|
||||
-phys:
|
||||
from general PHY binding: the phandle for the PHY device.
|
||||
-phy-names:
|
||||
from general PHY binding: Should be "dp".
|
||||
|
||||
Optional properties for dp-controller:
|
||||
-hpd-gpios:
|
||||
Hotplug detect GPIO.
|
||||
Indicates which GPIO should be used for hotplug detection
|
||||
-port@[X]: SoC specific port nodes with endpoint definitions as defined
|
||||
in Documentation/devicetree/bindings/media/video-interfaces.txt,
|
||||
please refer to the SoC specific binding document:
|
||||
* Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
|
||||
* Documentation/devicetree/bindings/video/analogix_dp-rockchip.txt
|
||||
|
||||
|
||||
[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
Example:
|
||||
|
||||
dp-controller {
|
||||
compatible = "samsung,exynos5-dp";
|
||||
reg = <0x145b0000 0x10000>;
|
||||
interrupts = <10 3>;
|
||||
interrupt-parent = <&combiner>;
|
||||
clocks = <&clock 342>;
|
||||
clock-names = "dp";
|
||||
|
||||
phys = <&dp_phy>;
|
||||
phy-names = "dp";
|
||||
};
|
||||
@ -1,20 +1,3 @@
|
||||
Device-Tree bindings for Samsung Exynos Embedded DisplayPort Transmitter(eDP)
|
||||
|
||||
DisplayPort is industry standard to accommodate the growing board adoption
|
||||
of digital display technology within the PC and CE industries.
|
||||
It consolidates the internal and external connection methods to reduce device
|
||||
complexity and cost. It also supports necessary features for important cross
|
||||
industry applications and provides performance scalability to enable the next
|
||||
generation of displays that feature higher color depths, refresh rates, and
|
||||
display resolutions.
|
||||
|
||||
eDP (embedded display port) device is compliant with Embedded DisplayPort
|
||||
standard as follows,
|
||||
- DisplayPort standard 1.1a for Exynos5250 and Exynos5260.
|
||||
- DisplayPort standard 1.3 for Exynos5422s and Exynos5800.
|
||||
|
||||
eDP resides between FIMD and panel or FIMD and bridge such as LVDS.
|
||||
|
||||
The Exynos display port interface should be configured based on
|
||||
the type of panel connected to it.
|
||||
|
||||
@ -48,26 +31,6 @@ Required properties for dp-controller:
|
||||
from general PHY binding: the phandle for the PHY device.
|
||||
-phy-names:
|
||||
from general PHY binding: Should be "dp".
|
||||
-samsung,color-space:
|
||||
input video data format.
|
||||
COLOR_RGB = 0, COLOR_YCBCR422 = 1, COLOR_YCBCR444 = 2
|
||||
-samsung,dynamic-range:
|
||||
dynamic range for input video data.
|
||||
VESA = 0, CEA = 1
|
||||
-samsung,ycbcr-coeff:
|
||||
YCbCr co-efficients for input video.
|
||||
COLOR_YCBCR601 = 0, COLOR_YCBCR709 = 1
|
||||
-samsung,color-depth:
|
||||
number of bits per colour component.
|
||||
COLOR_6 = 0, COLOR_8 = 1, COLOR_10 = 2, COLOR_12 = 3
|
||||
-samsung,link-rate:
|
||||
link rate supported by the panel.
|
||||
LINK_RATE_1_62GBPS = 0x6, LINK_RATE_2_70GBPS = 0x0A
|
||||
-samsung,lane-count:
|
||||
number of lanes supported by the panel.
|
||||
LANE_COUNT1 = 1, LANE_COUNT2 = 2, LANE_COUNT4 = 4
|
||||
- display-timings: timings for the connected panel as described by
|
||||
Documentation/devicetree/bindings/display/display-timing.txt
|
||||
|
||||
Optional properties for dp-controller:
|
||||
-interlaced:
|
||||
@ -83,17 +46,30 @@ Optional properties for dp-controller:
|
||||
Hotplug detect GPIO.
|
||||
Indicates which GPIO should be used for hotplug
|
||||
detection
|
||||
Video interfaces:
|
||||
Device node can contain video interface port nodes according to [1].
|
||||
The following are properties specific to those nodes:
|
||||
-video interfaces: Device node can contain video interface port
|
||||
nodes according to [1].
|
||||
- display-timings: timings for the connected panel as described by
|
||||
Documentation/devicetree/bindings/display/panel/display-timing.txt
|
||||
|
||||
endpoint node connected to bridge or panel node:
|
||||
- remote-endpoint: specifies the endpoint in panel or bridge node.
|
||||
This node is required in all kinds of exynos dp
|
||||
to represent the connection between dp and bridge
|
||||
or dp and panel.
|
||||
For the below properties, please refer to Analogix DP binding document:
|
||||
* Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
|
||||
-phys (required)
|
||||
-phy-names (required)
|
||||
-hpd-gpios (optional)
|
||||
|
||||
[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
|
||||
Deprecated properties for DisplayPort:
|
||||
-interlaced: deprecated prop that can parsed from drm_display_mode.
|
||||
-vsync-active-high: deprecated prop that can parsed from drm_display_mode.
|
||||
-hsync-active-high: deprecated prop that can parsed from drm_display_mode.
|
||||
-samsung,ycbcr-coeff: deprecated prop that can parsed from drm_display_mode.
|
||||
-samsung,dynamic-range: deprecated prop that can parsed from drm_display_mode.
|
||||
-samsung,color-space: deprecated prop that can parsed from drm_display_info.
|
||||
-samsung,color-depth: deprecated prop that can parsed from drm_display_info.
|
||||
-samsung,link-rate: deprecated prop that can reading from monitor by dpcd method.
|
||||
-samsung,lane-count: deprecated prop that can reading from monitor by dpcd method.
|
||||
-samsung,hpd-gpio: deprecated name for hpd-gpios.
|
||||
|
||||
-------------------------------------------------------------------------------
|
||||
|
||||
Example:
|
||||
|
||||
@ -112,13 +88,6 @@ SOC specific portion:
|
||||
|
||||
Board Specific portion:
|
||||
dp-controller {
|
||||
samsung,color-space = <0>;
|
||||
samsung,dynamic-range = <0>;
|
||||
samsung,ycbcr-coeff = <0>;
|
||||
samsung,color-depth = <1>;
|
||||
samsung,link-rate = <0x0a>;
|
||||
samsung,lane-count = <4>;
|
||||
|
||||
display-timings {
|
||||
native-mode = <&lcd_timing>;
|
||||
lcd_timing: 1366x768 {
|
||||
@ -135,18 +104,9 @@ Board Specific portion:
|
||||
};
|
||||
|
||||
ports {
|
||||
port {
|
||||
port@0 {
|
||||
dp_out: endpoint {
|
||||
remote-endpoint = <&dp_in>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
panel {
|
||||
...
|
||||
port {
|
||||
dp_in: endpoint {
|
||||
remote-endpoint = <&dp_out>;
|
||||
remote-endpoint = <&bridge_in>;
|
||||
};
|
||||
};
|
||||
};
|
||||
|
||||
Loading…
Reference in New Issue
Block a user