From 2513273771b2b6fc66aee467ca31088a7bd84e49 Mon Sep 17 00:00:00 2001
From: Chen-Yu Tsai <wens@csie.org>
Date: Fri, 8 Sep 2017 15:50:16 +0800
Subject: [PATCH] ARM: dts: sun6i: Add cross pipeline connections between DRCs
and TCONs
The TCONs on A31/A31s can select either backend as its input. As there
is no configurable mux in the backend or DRC to redirect their output,
or for the DRC to select an input, the connections are presumably from
the each DRC to each TCON, with the TCON having two input ports, like
the following diagram:
Backend 0 ------- DRC 0 ------- [0] TCON 0
-- -- [1]
\ /
X
/ \
-- -- [0]
Backend 1 ------- DRC 1 ------- [1] TCON 1
Add these connection endpoints to the device tree.
Signed-off-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@free-electrons.com>
---
arch/arm/boot/dts/sun6i-a31.dtsi | 20 ++++++++++++++++++++
1 file changed, 20 insertions(+)
diff --git a/arch/arm/boot/dts/sun6i-a31.dtsi b/arch/arm/boot/dts/sun6i-a31.dtsi
index 00a4c7614e0a1..93209cda28db4 100644
--- a/arch/arm/boot/dts/sun6i-a31.dtsi
+++ b/arch/arm/boot/dts/sun6i-a31.dtsi
@@ -278,6 +278,11 @@
reg = <0>;
remote-endpoint = <&drc0_out_tcon0>;
};
+
+ tcon0_in_drc1: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&drc1_out_tcon0>;
+ };
};
tcon0_out: port@1 {
@@ -311,6 +316,11 @@
#size-cells = <0>;
reg = <0>;
+ tcon1_in_drc0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&drc0_out_tcon1>;
+ };
+
tcon1_in_drc1: endpoint@1 {
reg = <1>;
remote-endpoint = <&drc1_out_tcon1>;
@@ -1079,6 +1089,11 @@
#size-cells = <0>;
reg = <1>;
+ drc1_out_tcon0: endpoint@0 {
+ reg = <0>;
+ remote-endpoint = <&tcon0_in_drc1>;
+ };
+
drc1_out_tcon1: endpoint@1 {
reg = <1>;
remote-endpoint = <&tcon1_in_drc1>;
@@ -1170,6 +1185,11 @@
reg = <0>;
remote-endpoint = <&tcon0_in_drc0>;
};
+
+ drc0_out_tcon1: endpoint@1 {
+ reg = <1>;
+ remote-endpoint = <&tcon1_in_drc0>;
+ };
};
};
};
--
2.30.2