From: Michal Simek <michal.simek@xilinx.com>
Date: Tue, 26 Oct 2021 14:16:16 +0000 (+0200)
Subject: arm64: zynqmp: Enable DP driver for SOMs
X-Git-Url: http://git.ipfire.org/?a=commitdiff_plain;h=a9b5f6ed3624b6c637ea4b0e1342bda814d380b2;p=thirdparty%2Fu-boot.git

arm64: zynqmp: Enable DP driver for SOMs

The main reason is to send pmufw cfg overlay from U-Boot to PMUFW to enable
access to DP. Overlay is sent when cls command is called and for that IP
has to be enabled in carrier cards.
And IP needs to be also enabled in SOM dt because with DTB reselection new
DT is not parsed in pre reloc U-Boot instance. It is called from board_f
via embedded_dtb_select(). That's why bind function is not able to allocate
memory and it ends up with error:
"Video device 'display@fd4a0000' cannot allocate frame buffer memory -ensure the
device is set up before relocation"

To avoid this situation DP is placed also to SOM where bind function is
called and frame buffer memory is allocated and just reused after DTB
reselection. Result is the same. There could be a problem in Linux with
different DP configurations but that's need to be solved there because
console should be on from u-boot already.

Signed-off-by: Michal Simek <michal.simek@xilinx.com>
---

diff --git a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
index 7b8b8f195a6..9d609d70ce7 100644
--- a/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
+++ b/arch/arm/dts/zynqmp-sck-kr-g-revA.dts
@@ -119,7 +119,7 @@
 };
 
 &zynqmp_dpsub {
-	status = "disabled";
+	status = "okay";
 	phy-names = "dp-phy0", "dp-phy1";
 	phys = <&psgtr 1 PHY_TYPE_DP 0 1>;
 };
diff --git a/arch/arm/dts/zynqmp-sck-kv-g-revB.dts b/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
index df054e152a7..8f7c8889f90 100644
--- a/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
+++ b/arch/arm/dts/zynqmp-sck-kv-g-revB.dts
@@ -96,7 +96,7 @@
 };
 
 &zynqmp_dpsub {
-	status = "disabled";
+	status = "okay";
 	phy-names = "dp-phy0", "dp-phy1";
 	phys = <&psgtr 1 PHY_TYPE_DP 0 0>, <&psgtr 0 PHY_TYPE_DP 1 0>;
 };
diff --git a/arch/arm/dts/zynqmp-sm-k26-revA.dts b/arch/arm/dts/zynqmp-sm-k26-revA.dts
index 4a5768c90fa..59bdd73fa9e 100644
--- a/arch/arm/dts/zynqmp-sm-k26-revA.dts
+++ b/arch/arm/dts/zynqmp-sm-k26-revA.dts
@@ -320,3 +320,7 @@
 &ams_pl {
 	status = "okay";
 };
+
+&zynqmp_dpsub {
+	status = "okay";
+};