From d07d63c135b18000cee1d14be2e257d2f791e574 Mon Sep 17 00:00:00 2001
From: Liu Ying <victor.liu@nxp.com>
Date: Tue, 12 Jun 2018 15:18:12 +0800
Subject: [PATCH] MLK-18576-1 dt-bindings: display: imx: ldb: Add aux prop
descriptions
i.MX8qxp uses two LDB(one primary, one auxiliary) to support dual
channel mode. This patch adds DT property descriptions for those
properties needed by this case.
Signed-off-by: Liu Ying <victor.liu@nxp.com>
---
.../devicetree/bindings/display/imx/ldb.txt | 20 ++++++++++++++-----
1 file changed, 15 insertions(+), 5 deletions(-)
diff --git a/Documentation/devicetree/bindings/display/imx/ldb.txt b/Documentation/devicetree/bindings/display/imx/ldb.txt
index d425efb2c3c557..e0c7a97756758c 100644
--- a/Documentation/devicetree/bindings/display/imx/ldb.txt
+++ b/Documentation/devicetree/bindings/display/imx/ldb.txt
@@ -38,6 +38,11 @@ Required properties:
The following clocks are expected on i.MX8qm:
"pixel" - pixel clock
"bypass" - bypass clock
+ The following clocks are expected on i.MX8qxp:
+ "pixel" - pixel clock
+ "bypass" - bypass clock
+ "aux_pixel" - pixel clock of the auxiliary LDB
+ "aux_bypass" - bypass clock of the auxiliary LDB
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.
@@ -51,8 +56,11 @@ Optional properties:
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.
+ channel mode(i.MX8qxp uses two LDBs to support this). Note that when
+ i.MX8qxp LDB works in dual channel mode, only the primary LDB node
+ should be active and the auxiliary LDB node should be disabled.
+ - aux-gpr : the phandle points to the auxiliary LVDS region containing
+ the LVDS control register(only required by i.MX8qxp)
LVDS Channel
============
@@ -75,9 +83,11 @@ Required properties:
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 and
- i.MX8qxp.
- - phy-names: should be "ldb_phy". Valid only on i.MX8qm and i.MX8qxp.
+ - phys: the phandle for the LVDS PHY devices. Valid only on i.MX8qm and
+ i.MX8qxp. For i.MX8qxp, two PHYs should be provided for LVDS
+ channel0, one for primary LDB and the other for auxiliary LDB.
+ - phy-names: should be "ldb_phy" for i.MX8qm, and "ldb_phy", "aux_ldb_phy"
+ for i.MX8qxp. 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
--
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