linux-kernel - [PATCH] MIPS: Loongson64: Add UART node for LS7A PCH

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [thread-next>] [day] [month] [year] [list]

Date:   Thu, 17 Sep 2020 20:39:01 +0800
From:   Tiezhu Yang <yangtiezhu@...ngson.cn>
To:     Thomas Bogendoerfer <tsbogend@...ha.franken.de>,
        Rob Herring <robh+dt@...nel.org>,
        Huacai Chen <chenhc@...ote.com>,
        Jiaxun Yang <jiaxun.yang@...goat.com>
Cc:     linux-mips@...r.kernel.org, devicetree@...r.kernel.org,
        linux-kernel@...r.kernel.org, Xuefeng Li <lixuefeng@...ngson.cn>
Subject: [PATCH] MIPS: Loongson64: Add UART node for LS7A PCH

When I update the latest kernel on the Loongson platform used with
LS7A bridge chip, the serial console has no output, this is because
the machine uses LS7A UART0 instead of CPU UART0, add UART node for
LS7A PCH to enhance the compatibility.

Signed-off-by: Tiezhu Yang <yangtiezhu@...ngson.cn>
---
 arch/mips/boot/dts/loongson/ls7a-pch.dtsi | 39 +++++++++++++++++++++++++++++++
 1 file changed, 39 insertions(+)

diff --git a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
index e574a06..f99a7a1 100644
--- a/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
+++ b/arch/mips/boot/dts/loongson/ls7a-pch.dtsi
@@ -19,6 +19,45 @@
 			#interrupt-cells = <2>;
 		};
 
+		ls7a_uart0: serial@...80000 {
+			compatible = "ns16550a";
+			reg = <0 0x10080000 0 0x100>;
+			clock-frequency = <50000000>;
+			interrupt-parent = <&pic>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			no-loopback-test;
+		};
+
+		ls7a_uart1: serial@...80100 {
+			status = "disabled";
+			compatible = "ns16550a";
+			reg = <0 0x10080100 0 0x100>;
+			clock-frequency = <50000000>;
+			interrupt-parent = <&pic>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			no-loopback-test;
+		};
+
+		ls7a_uart2: serial@...80200 {
+			status = "disabled";
+			compatible = "ns16550a";
+			reg = <0 0x10080200 0 0x100>;
+			clock-frequency = <50000000>;
+			interrupt-parent = <&pic>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			no-loopback-test;
+		};
+
+		ls7a_uart3: serial@...80300 {
+			status = "disabled";
+			compatible = "ns16550a";
+			reg = <0 0x10080300 0 0x100>;
+			clock-frequency = <50000000>;
+			interrupt-parent = <&pic>;
+			interrupts = <8 IRQ_TYPE_LEVEL_HIGH>;
+			no-loopback-test;
+		};
+
 		pci@...00000 {
 			compatible = "loongson,ls7a-pci";
 			device_type = "pci";
-- 
2.1.0