Hello Champs,
Customer board has two TDA4VM SOC: soc1 is pcie3 rc , soc2 is pcie3 ep.
linux SDK is 8.04.
And the Hardware SCH is this
When soc1 and soc2 power on, soc1 lspci can see 0x104c:b00d soc2 bridge device, and soc1 echo 1 > /sys/bus/pci/devices/0000:00:00.0/remove , echo 1 > /sys/bus/pci/rescan ok.
But the problem is : After i create Endpot function in soc2 (ep device) , and then in soc1(rc) echo 1 > /sys/bus/pci/devices/0000:00:00.0/remove , echo 1 > /sys/bus/pci/rescan, the soc1 system crash immediately.
log is this：
..... My Operating Steps：
soc2：
cd /sys/kernel/config/pci_ep
mkdir functions/pci_epf_test/func1
echo 0x104c > functions/pci_epf_test/func1/vendorid
echo 0xb00d > functions/pci_epf_test/func1/deviceid
echo 12 > functions/pci_epf_test/func1/msi_interrupts
echo 12 > functions/pci_epf_test/func1/msix_interrupts
ln -s functions/pci_epf_test/func1 controllers/2930000.pcie-ep
echo 1 > controllers/2930000.pcie-ep/start
soc1：
echo 1 > /sys/bus/pci/devices/0000:00:00.0/remove
echo 1 > /sys/bus/pci/rescan
Dts setting:
soc1:
&pcie3_rc {
/*reset-gpios = <&exp2 20 GPIO_ACTIVE_HIGH>;*/
phys = <&serdes3_pcie_link>;
phy-names = "pcie-phy";
num-lanes = <2>;
};
&serdes3 {
assigned-clocks = <&serdes3 CDNS_SIERRA_PLL_CMNLC>;
assigned-clock-parents = <&wiz3_pll1_refclk>;
serdes3_pcie_link: phy@0 {
reg = <0>;
cdns,num-lanes = <2>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
resets = <&serdes_wiz3 1>, <&serdes_wiz3 2>;
};
};
soc2:
&pcie3_ep {
/delete-property/ power-domains;
phys = <&serdes3_pcie_link>;
phy-names = "pcie-phy";
num-lanes = <2>;
};
&serdes3 {
assigned-clocks = <&serdes3 CDNS_SIERRA_PLL_CMNLC>;
assigned-clock-parents = <&wiz3_pll1_refclk>;
serdes3_pcie_link: phy@0 {
reg = <0>;
cdns,num-lanes = <2>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
resets = <&serdes_wiz3 1>, <&serdes_wiz3 2>;
};
};
...............................
So, what reason can is？ like refclk setting ? etc...
How can I do ......
Thanks
Regards
Shine
