NXP

p2020ds开发板

2019-07-12 12:48发布

1.cpu处理器 p2020e p2020 encryption 2.画硬件原理图注意 checklist pin list   仔细阅读p2020ds_bringup_guide.pdf,才真正的对p2020ds开发板有所了解 serdes接口(pcie、srio、sgmii和sata接口) 注意在p2020ds上默认是disable sgmii接口。 通过拨码开关就可以知道: SW4:S0:PEX1(x1@2.5Gbps),S1:PEX2(x1@2.5Gbps),S2-3:PEX3(x2@2.5Gbps) SW5:disable SGMII2和SGMII3(TESEC2、3=rgmii) SW6:PEX1:Slot 2(x1)+PEX2:Nvidia M1575(x1)(Nvidia M1575是南桥芯片,扩展了sata、esata、ac97和pci接口)+PEX3:Slot 1(x2) 如果要使用tsec网口的sgmii接口,我们需要改变开关 SW4:S0-1:PEX1(x1@2.5Gbps),S2:SGMII@1.25Gbps,S3:SGMII@1.25Gbps SW5:enableSGMII2和SGMII3(TESEC2、3=sgmii) SW6:PEX1:Slot 2(x1)+PEX2:Nvidia M1575(x1)(Nvidia M1575是南桥芯片,扩展了sata、esata、ac97和pci接口)+ PEX3:SGMII Slot     在linux下通过/proc/iomem或ioports查看pcie接口 在uboot下 PCIE1 connected to Slot 2 as Root Complex (base addr ffe0a000)   PCIE1: Bus 00 - 00      PCIE2 connected to South Bridge as Root Complex (base addr ffe09000)     02:00.0 - 10b9:5249 - Bridge device     03:1c.0 - 10b9:5237 - Serial bus controller     03:1c.1 - 10b9:5237 - Serial bus controller     03:1c.2 - 10b9:5237 - Serial bus controller     03:1c.3 - 10b9:5239 - Serial bus controller     03:1d.0 - 10b9:5455 - Multimedia device     03:1d.1 - 10b9:5457 - Simple comm. controller     03:1e.0 - 10b9:1575 - Bridge device     03:1e.1 - 10b9:7101 - Bridge device     03:1f.0 - 10b9:5229 - Mass storage controller     4-2 P2020DS Board Bring-up, Rev 1.0 Freescale Semiconductor     03:1f.1 - 10b9:5288 - Mass storage controller    PCIE2: Bus 01 - 03       PCIE3 connected to Slot 1 as Root Complex (base addr ffe08000)   PCIE3: Bus 04 - 04
可以看到pcie1 pcie3是pcie *2 sloct 而pcie2是相当于通过南桥芯片扩展的各种接口
elbc即可 cs0: nor nand cs3: fpga 在linux下通过/proc/device_tree/localbus查看
在uboot下regInfo或md、flinfo
soc 1.I2c 2. spi 3.sdhc 4.gpio 5.ddr 注意i2c和spi都接有eeprom,不过我们一般讲的都是16Mspi eeprom而不是8k的i2c eeprom

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