dt-bindings: display: imx: ldb: Add i.MXqxp LDB compatible string and properties

This patch adds device tree binding support for i.MXqxp LDB,
including compatible string and additional properties.

Signed-off-by: Liu Ying <victor.liu@nxp.com>

1 files changed, 16 insertions, 9 deletions

diff --git a/Documentation/devicetree/bindings/display/imx/ldb.txt b/Documentation/devicetree/bindings/display/imx/ldb.txt
index 51a157a231a7..f4ffeb4c5008 100644
--- a/Documentation/devicetree/bindings/display/imx/ldb.txt
+++ b/Documentation/devicetree/bindings/display/imx/ldb.txt
@@ -10,13 +10,15 @@ Required properties:
  - #address-cells : should be <1>
  - #size-cells : should be <0>
  - compatible : should be "fsl,imx53-ldb" or "fsl,imx6q-ldb" or
-                "fsl,imx8qm-ldb".
+                "fsl,imx8qm-ldb" or "fsl,imx8qxp-ldb".
                 All LDB versions are similar.
                 i.MX6q/dl has an additional multiplexer in the front to select
                 any of the two or four IPU display interfaces as input for each
                 LVDS channel.
                 i.MX8qm LDB supports 10bit RGB input and needs an additional
                 phy.
+                i.MX8qxp LDB only supports one LVDS encoder channel(either
+                channel0 or channel1).
  - gpr : should be <&gpr> on i.MX53 and i.MX6q.
          The phandle points to the iomuxc-gpr region containing the LVDS
          control register.
@@ -40,16 +42,20 @@ Required properties:
         The needed clock numbers for each are documented in
         Documentation/devicetree/bindings/clock/imx5-clock.txt, and in
         Documentation/devicetree/bindings/clock/imx6q-clock.txt, and in
-        Documentation/devicetree/bindings/clock/imx8qm-lpcg.txt.
-- power-domains : phandle pointing to power domain, only required by i.MX8qm.
+        Documentation/devicetree/bindings/clock/imx8qm-lpcg.txt, and in
+        Documentation/devicetree/bindings/clock/imx8qxp-lpcg.txt.
+- power-domains : phandle pointing to power domain, only required by i.MX8qm and
+                  i.MX8qxp.
 
 Optional properties:
- - pinctrl-names : should be "default" on i.MX53, not used on i.MX6q and i.MX8qm
+ - pinctrl-names : should be "default" on i.MX53, not used on i.MX6q, i.MX8qm
+                   and i.MX8qxp
  - pinctrl-0 : a phandle pointing to LVDS pin settings on i.MX53,
-               not used on i.MX6q and i.MX8qm
+               not used on i.MX6q, i.MX8qm and i.MX8qxp
  - fsl,dual-channel : boolean. if it exists, only LVDS channel 0 should
    be configured - one input will be distributed on both outputs in dual
    channel mode
+   Currently, i.MX8qxp doesn't support dual channel mode.
 
 LVDS Channel
 ============
@@ -68,12 +74,13 @@ Required properties:
    On i.MX6, there should be four input ports (port@[0-3]) that correspond
    to the four LVDS multiplexer inputs.
    On i.MX8qm, the two channels of LDB connect to one display interface of DPU.
-   A single output port (port@2 on i.MX5, port@4 on i.MX6, port@1 on i.MX8qm)
-   must be connected to a panel input port or a bridge input port.
+   A single output port (port@2 on i.MX5, port@4 on i.MX6, port@1 on i.MX8qm
+   and i.MX8qxp) must be connected to a panel input port or a bridge input port.
    Optionally, the output port can be left out if display-timings are used
    instead.
- - phys: the phandle for the LVDS PHY device. Valid only on i.MX8qm.
- - phy-names: should be "ldb_phy". Valid only on i.MX8qm.
+ - phys: the phandle for the LVDS PHY device. Valid only on i.MX8qm and
+         i.MX8qxp.
+ - phy-names: should be "ldb_phy". Valid only on i.MX8qm and i.MX8qxp.
 
 Optional properties (required if display-timings are used):
  - ddc-i2c-bus: phandle of an I2C controller used for DDC EDID probing