[PATCH v14 07/17] dt-bindings: add document for analogix display port driver

Yakir Yang
2016-02-15T11:10:26Z

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.

Signed-off-by: Yakir Yang <ykk@rock-chips.com>
Acked-by: Rob Herring <robh@kernel.org>
---
Changes in v14: None
Changes in v13: None
Changes in v12: None
Changes in v11: None
Changes in v10:
- Add the ack from Rob Herring

Changes in v9: None
Changes in v8:
- Correct the right document path of display-timing.txt (Heiko)
- Correct the misspell of 'from' to 'frm'. (Heiko)

Changes in v7: None
Changes in v6: None
Changes in v5: None
Changes in v4:
- Split all DTS changes, and provide backward compatibility. Mark old
properties as deprecated but still support them. (Krzysztof)
- Update "analogix,hpd-gpio" to "hpd-gpios" prop name. (Rob)
- Deprecated some properties which could parsed from Edid/Mode/DPCD. (Thierry)
"analogix,color-space" & "analogix,color-depth" &
"analogix,link-rate" & "analogix,lane-count" &
"analogix,ycbcr-coeff" & "analogix,dynamic-range" &
"vsync-active-high" & "hsync-active-high" & "interlaces"

Changes in v3:
- Add devicetree binding documents. (Heiko)
- Remove sync pol & colorimetry properies from the new analogix dp driver
devicetree binding. (Thierry)
- Update the exist exynos dtsi file with the latest DP DT properies.

Changes in v2: None

.../bindings/display/bridge/analogix_dp.txt | 50 ++++++++++++
.../bindings/display/exynos/exynos_dp.txt | 92 ++++++----------------
2 files changed, 76 insertions(+), 66 deletions(-)
create mode 100644 Documentation/devicetree/bindings/display/bridge/analogix_dp.txt

diff --git a/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
new file mode 100644
index 0000000..7659a7a
--- /dev/null
+++ b/Documentation/devicetree/bindings/display/bridge/analogix_dp.txt
@@ -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";
+ };
diff --git a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
index fe4a7a2..4fa8aca 100644
--- a/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
+++ b/Documentation/devicetree/bindings/display/exynos/exynos_dp.txt
@@ -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:
-
- 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.
-
-[1]: Documentation/devicetree/bindings/media/video-interfaces.txt
+ -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
+
+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)
+
+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>;
};
};
};
--
1.9.1