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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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b65c0efa35
The notion of which uart instance is serial0 or serial1 is board specific rather than generic to the chip. This patch removes the serial aliases from generic chip dtsi and adds an appropriate alias to the board specific dtsi. By making the alias for serial0 point to uart1 for the arria10_socdk, the linux boot command line supports specifying console=ttyS0,115200 for backwards compatibility, and it supports not specifying the console at all. Signed-off-by: Matthew Gerlach <mgerlach@opensource.altera.com> Signed-off-by: Dinh Nguyen <dinguyen@opensource.altera.com>
108 lines
2.4 KiB
Plaintext
108 lines
2.4 KiB
Plaintext
/*
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* Copyright (C) 2015 Altera Corporation <www.altera.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 as published by
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* the Free Software Foundation; either version 2 of the License, or
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* (at your option) any later version.
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*
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* This program is distributed in the hope that it will be useful,
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* but WITHOUT ANY WARRANTY; without even the implied warranty of
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* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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* GNU General Public License for more details.
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*
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* You should have received a copy of the GNU General Public License
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* along with this program. If not, see <http://www.gnu.org/licenses/>.
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*/
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#include "socfpga_arria10.dtsi"
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/ {
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model = "Altera SOCFPGA Arria 10";
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compatible = "altr,socfpga-arria10", "altr,socfpga";
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aliases {
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ethernet0 = &gmac0;
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serial0 = &uart1;
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};
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chosen {
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bootargs = "earlyprintk";
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stdout-path = "serial0:115200n8";
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};
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memory {
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name = "memory";
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device_type = "memory";
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reg = <0x0 0x40000000>; /* 1GB */
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};
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soc {
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clkmgr@ffd04000 {
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clocks {
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osc1 {
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clock-frequency = <25000000>;
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};
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};
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};
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};
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};
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&gmac0 {
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phy-mode = "rgmii";
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phy-addr = <0xffffffff>; /* probe for phy addr */
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/*
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* These skews assume the user's FPGA design is adding 600ps of delay
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* for TX_CLK on Arria 10.
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*
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* All skews are offset since hardware skew values for the ksz9031
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* range from a negative skew to a positive skew.
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* See the micrel-ksz90x1.txt Documentation file for details.
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*/
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txd0-skew-ps = <0>; /* -420ps */
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txd1-skew-ps = <0>; /* -420ps */
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txd2-skew-ps = <0>; /* -420ps */
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txd3-skew-ps = <0>; /* -420ps */
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rxd0-skew-ps = <420>; /* 0ps */
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rxd1-skew-ps = <420>; /* 0ps */
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rxd2-skew-ps = <420>; /* 0ps */
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rxd3-skew-ps = <420>; /* 0ps */
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txen-skew-ps = <0>; /* -420ps */
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txc-skew-ps = <1860>; /* 960ps */
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rxdv-skew-ps = <420>; /* 0ps */
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rxc-skew-ps = <1680>; /* 780ps */
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max-frame-size = <3800>;
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status = "okay";
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};
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&i2c1 {
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speed-mode = <0>;
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status = "okay";
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/*
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* adjust the falling times to decrease the i2c frequency to 50Khz
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* because the LCD module does not work at the standard 100Khz
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*/
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i2c-sda-falling-time-ns = <6000>;
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i2c-scl-falling-time-ns = <6000>;
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eeprom@51 {
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compatible = "atmel,24c32";
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reg = <0x51>;
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pagesize = <32>;
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};
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rtc@68 {
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compatible = "dallas,ds1339";
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reg = <0x68>;
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};
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};
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&uart1 {
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status = "okay";
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};
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&usb0 {
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status = "okay";
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};
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