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标题: rk3588 pcie异常排故。 LTSSM连接失败 [打印本页]

作者: wx__H6Z50O 时间: 2022-12-9 10:23
标题: rk3588 pcie异常排故。 LTSSM连接失败
在插入或不插入外设，都会在PCIe Linking... LTSSM is 0x0之后连接失败。
其中dts使用pcie3x4: pcie@fe150000控制器，pcie30phy: phy@fee80000 PHY节点，reset-gpios配置正确，vcc3v3对应pwren引脚配置正确

请大佬帮忙看看，提供几个排故方向，拜谢！

[root@RK3588:/]# dmesg | grep pcie
[ 2.942669] vcc3v3_pcie30: 3300 mV, disabled
[ 2.942706] reg-fixed-voltage vcc3v3-pcie30: Looking up vin-supply from device tree
[ 2.942709] vcc3v3_pcie30: supplied by vcc12v_dcin
[ 2.942732] reg-fixed-voltage vcc3v3-pcie30: vcc3v3_pcie30 supplying 3300000uV
[ 3.227704] rk-pcie fe150000.pcie: invalid prsnt-gpios property in node
[ 3.227716] rk-pcie fe150000.pcie: Looking up vpcie3v3-supply from device tree
[ 3.246529] rk-pcie fe150000.pcie: missing legacy IRQ resource
[ 3.246540] rk-pcie fe150000.pcie: Missing *config* reg space
[ 3.246547] rk-pcie fe150000.pcie: host bridge /pcie@fe150000 ranges:
[ 3.246558] rk-pcie fe150000.pcie:    err 0x00f0000000..0x00f00fffff -> 0x00f0000000
[ 3.246564] rk-pcie fe150000.pcie:    IO 0x00f0100000..0x00f01fffff -> 0x00f0100000
[ 3.246571] rk-pcie fe150000.pcie:    MEM 0x00f0200000..0x00f0ffffff -> 0x00f0200000
[ 3.246576] rk-pcie fe150000.pcie:    MEM 0x0900000000..0x093fffffff -> 0x0900000000
[ 3.246597] rk-pcie fe150000.pcie: Missing *config* reg space
[ 3.246616] rk-pcie fe150000.pcie: invalid resource
[ 3.452788] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.478322] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x1
[ 3.504986] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x1
[ 3.531653] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.558319] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.584986] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.611652] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.638320] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.664986] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 3.691653] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 6.118318] rk-pcie fe150000.pcie: PCIe Link Fail
[ 6.118323] rk-pcie fe150000.pcie: failed to initialize host
[ 6.118471] rk-pcie: probe of fe150000.pcie failed with error -22
[ 11.579640] reg-fixed-voltage pcie30-avdd0v75: Looking up vin-supply from device tree
[ 11.579696] pcie30_avdd0v75: supplied by nldo5_s0
[ 11.580636] pcie30_avdd0v75: 750 mV, enabled
[ 11.580714] reg-fixed-voltage pcie30-avdd0v75: pcie30_avdd0v75 supplying 750000uV
[ 11.580817] reg-fixed-voltage pcie30-avdd1v8: Looking up vin-supply from device tree
[ 11.580822] pcie30_avdd1v8: supplied by avcc_1v8_s0
[ 11.584568] pcie30_avdd1v8: 1800 mV, enabled
[ 11.584637] reg-fixed-voltage pcie30-avdd1v8: pcie30_avdd1v8 supplying 1800000uV
[ 11.584824] rk-pcie fe150000.pcie: invalid prsnt-gpios property in node
[ 11.584841] rk-pcie fe150000.pcie: Looking up vpcie3v3-supply from device tree
[ 11.593211] rk-pcie fe150000.pcie: missing legacy IRQ resource
[ 11.593224] rk-pcie fe150000.pcie: Missing *config* reg space
[ 11.593231] rk-pcie fe150000.pcie: host bridge /pcie@fe150000 ranges:
[ 11.593243] rk-pcie fe150000.pcie:    err 0x00f0000000..0x00f00fffff -> 0x00f0000000
[ 11.593250] rk-pcie fe150000.pcie:    IO 0x00f0100000..0x00f01fffff -> 0x00f0100000
[ 11.593258] rk-pcie fe150000.pcie:    MEM 0x00f0200000..0x00f0ffffff -> 0x00f0200000
[ 11.593263] rk-pcie fe150000.pcie:    MEM 0x0900000000..0x093fffffff -> 0x0900000000
[ 11.593286] rk-pcie fe150000.pcie: Missing *config* reg space
[ 11.593310] rk-pcie fe150000.pcie: invalid resource
[ 11.799435] rk_pcie_establish_link: 90 callbacks suppressed
[ 11.799438] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 11.824989] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x1
[ 11.851656] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x1
[ 11.878322] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 11.904988] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 11.931656] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 11.958326] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 11.984988] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 12.011655] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 12.038321] rk-pcie fe150000.pcie: PCIe Linking... LTSSM is 0x0
[ 14.464985] rk-pcie fe150000.pcie: PCIe Link Fail
[ 14.464993] rk-pcie fe150000.pcie: failed to initialize host
[ 14.465150] rk-pcie: probe of fe150000.pcie failed with error -22
[ 45.918326] vcc3v3_pcie30: disabling

作者: sdeer103255 时间: 2022-12-23 11:32
你好，请问你这个问题解决了吗？我也遇到了一样的问题

作者: wx__fDwWYH 时间: 2024-3-4 14:32

sdeer103255 发表于 2022-12-23 11:32
你好，请问你这个问题解决了吗？我也遇到了一样的问题

你好，请问你这个问题解决了吗？我也遇到了一样的问题谢谢

作者: kkwanghao 时间: 2024-5-23 20:21
请问问题解决了吗?是什么导致的?

作者: wx__H6Z50O 时间: 2024-9-6 15:13

kkwanghao 发表于 2024-5-23 20:21
请问问题解决了吗?是什么导致的?

我这边是外设硬盘的问题，换了个正常pcie3x4的硬盘可以了。
下面是官方建议排查方向：
异常原因：trainning 失败，外设没有处于⼯作状态或者信号异常。⾸先检测下 reset-gpios 这个是否配置
对了。其次，检测下外设的3V3供电是否有，是否⾜够，部分外设需要12V电源。最后测试复位信号与电
源的时序是否与此设备的spec冲突。如果都⽆法解决，⼤概率需要定位信号完整性，需要拿出测试眼图
和PCB给到我司硬件，并且最好我们建议贵司找实验室提供⼀份测试TX兼容性信号测试报告。
另外还建议客⼾打开pcie-dw-rockchip.c中的RK_PCIE_DBG，抓⼀份log以便分析。请阅读者注意，如果
有多个控制器同时使⽤，抓log前请先把不使⽤或者没问题的设备对应的控制器disable掉，这样log会好分
析⼀点。所抓取的log中，将会出现类似“rk-pcie 3c0000000.pcie: fifo_status = 0x144001”等信息。
fifo_status的末尾两位是PCIe链路的ltssm状态机，可以根据状态机信息判断异常发⽣的⼤致情况。芯⽚的
PCIe ltssm状态机信息可参照⽂末附录部分

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