enable docker ppp

hc

2023-12-09 95099d4622f8cb224d94e314c7a8e0df60b13f87

 kernel/arch/arc/boot/dts/nsim_700.dts
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@@ -1,9 +1,6 @@
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+// SPDX-License-Identifier: GPL-2.0-only
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 /*
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  * Copyright (C) 2012 Synopsys, Inc. (www.synopsys.com)
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- *
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- * This program is free software; you can redistribute it and/or modify
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- * it under the terms of the GNU General Public License version 2 as
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- * published by the Free Software Foundation.
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  */
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 /dts-v1/;
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@@ -17,11 +14,11 @@
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 	interrupt-parent = <&core_intc>;
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 	chosen {
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-		bootargs = "earlycon=arc_uart,mmio32,0xc0fc1000,115200n8 console=ttyARC0,115200n8 print-fatal-signals=1";
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+		bootargs = "earlycon=uart8250,mmio32,0xf0000000,115200n8 console=ttyS0,115200n8 print-fatal-signals=1";
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 	};
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 	aliases {
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-		serial0 = &arcuart0;
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+		serial0 = &uart0;
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 	};
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 	fpga {
..
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@@ -44,29 +41,15 @@
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 			#interrupt-cells = <1>;
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 		};
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-		arcuart0: serial@c0fc1000 {
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-			compatible = "snps,arc-uart";
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-			reg = <0xc0fc1000 0x100>;
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-			interrupts = <5>;
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-			clock-frequency = <80000000>;
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-			current-speed = <115200>;
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-			status = "okay";
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-		};
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-
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-		ethernet@c0fc2000 {
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-			compatible = "snps,arc-emac";
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-			reg = <0xc0fc2000 0x3c>;
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-			interrupts = <6>;
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-			mac-address = [ 00 11 22 33 44 55 ];
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-			clock-frequency = <80000000>;
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-			max-speed = <100>;
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-			phy = <&phy0>;
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-
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-			#address-cells = <1>;
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-			#size-cells = <0>;
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-			phy0: ethernet-phy@0 {
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-				reg = <1>;
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-			};
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+		uart0: serial@f0000000 {
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+			compatible = "ns16550a";
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+			reg = <0xf0000000 0x2000>;
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+			interrupts = <24>;
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+			clock-frequency = <50000000>;
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+			baud = <115200>;
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+			reg-shift = <2>;
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+			reg-io-width = <4>;
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+			no-loopback-test = <1>;
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 		};
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 		arcpct0: pct {