From: suijingfeng <suijingf...@loongson.cn>
This board is made by LEMOTE corporation, it has two name, one
is LX-6901, another is A1901.
This board has only one VGA output which is connected to the DVO1 of
the display controller.
+------+ +-----------------------------------+
| DDR4 | | +-------------------+ |
+------+ | | PCIe Root complex | LS7A1000 |
|| MC0 | +--++---------++----+ |
+----------+ HT 3.0 | || || |
| LS3A4000 |<-------->| +---++---+ +--++--+ +---------+ +------+
| CPU |<-------->| | GC1000 | | LSDC |<-->| DDR3 MC |<->| VRAM |
+----------+ | +--------+ +-+--+-+ +---------+ +------+
|| MC1 +---------------|--|----------------+
+------+ | |
| DDR4 | DVO0 is not get used | | DVO1 +-------+
+------+ <--------------------+ +-------->|ADV7125|---> VGA
+-------+
The model property added can provided board specific information,
mips kernel use it as machine name.
$ cat /proc/cpuinfo
system type : Generic Loongson64 System
machine : LX-6901 <-------------------- notice here
processor : 0
cpu model : ICT Loongson-3 V0.1 FPU V0.1
BogoMIPS : 3594.02
tlb_entries : 2112
isa : mips64r2
ASEs implemented : vz msa loongson-ext2
...
Signed-off-by: suijingfeng <suijingf...@loongson.cn>
Signed-off-by: Sui Jingfeng <15330273...@189.cn>
---
arch/mips/boot/dts/loongson/lemote_a1901.dts | 92 ++++++++++++++++++++
1 file changed, 92 insertions(+)
create mode 100644 arch/mips/boot/dts/loongson/lemote_a1901.dts
diff --git a/arch/mips/boot/dts/loongson/lemote_a1901.dts
b/arch/mips/boot/dts/loongson/lemote_a1901.dts
new file mode 100644
index 000000000000..f0443bc43af9
--- /dev/null
+++ b/arch/mips/boot/dts/loongson/lemote_a1901.dts
@@ -0,0 +1,92 @@
+// SPDX-License-Identifier: GPL-2.0
+
+/dts-v1/;
+
+#include "loongson64g-package.dtsi"
+#include "ls7a-pch.dtsi"
+
+/ {
+ model = "LX-6901";
+
+ vga-encoder {
+ compatible = "adi,adv7123", "dumb-vga-dac";
+
+ ports {
+ #address-cells = <1>;
+ #size-cells = <0>;
+
+ port@0 {
+ reg = <0>;
+ adv7123_in: endpoint {
+ remote-endpoint = <&dc_out_rgb1>;
+ };
+ };
+
+ port@1 {
+ reg = <1>;
+ adv7123_out: endpoint {
+ remote-endpoint = <&vga_connector_in>;
+ };
+ };
+ };
+ };
+
+ vga-connector {
+ compatible = "vga-connector";
+ label = "vga";
+
+ ddc-i2c-bus = <&i2c7>;
+
+ port {
+ vga_connector_in: endpoint {
+ remote-endpoint = <&adv7123_out>;
+ };
+ };
+ };
+};
+
+&package0 {
+ htvec: interrupt-controller@efdfb000080 {
+ compatible = "loongson,htvec-1.0";
+ reg = <0xefd 0xfb000080 0x40>;
+ interrupt-controller;
+ #interrupt-cells = <1>;
+
+ interrupt-parent = <&liointc>;
+ interrupts = <24 IRQ_TYPE_LEVEL_HIGH>,
+ <25 IRQ_TYPE_LEVEL_HIGH>,
+ <26 IRQ_TYPE_LEVEL_HIGH>,
+ <27 IRQ_TYPE_LEVEL_HIGH>,
+ <28 IRQ_TYPE_LEVEL_HIGH>,
+ <29 IRQ_TYPE_LEVEL_HIGH>,
+ <30 IRQ_TYPE_LEVEL_HIGH>,
+ <31 IRQ_TYPE_LEVEL_HIGH>;
+ };
+};
+
+&pch {
+ msi: msi-controller@2ff00000 {
+ compatible = "loongson,pch-msi-1.0";
+ reg = <0 0x2ff00000 0 0x8>;
+ interrupt-controller;
+ msi-controller;
+ loongson,msi-base-vec = <64>;
+ loongson,msi-num-vecs = <192>;
+ interrupt-parent = <&htvec>;
+ };
+};
+
+&lsdc {
+ ports {
+ port@0 {
+ status = "disabled";
+ };
+
+ port@1 {
+ status = "ok";
+ endpoint {
+ remote-endpoint = <&adv7123_in>;
+ };
+ };
+ };
+};
--
2.25.1
