Part Number: AM6411
Hi,
I'm trying to add pci support on u-boot to use Renesas uPD720201 and want to ask what's wrong with my approach.
I'm using ti-processor-sdk-linux-am64xx-evm-09.02.01.10 and my custom board has 512MB ram. Because the ram size is small, I can't upgrade to the latest sdk. When the new sdk version supports 512MB ram, I'll upgrade to the newer sdk version.
To support pci, I did
1) ti-u-boot-2023.04+gitAUTOINC+8366064208/configs/am64x_evm_a53_defconfig : add config
CONFIG_CMD_PCI=y
CONFIG_PCI=y
CONFIG_PCIE_DW_COMMON=y
CONFIG_PCI_KEYSTONE=y
CONFIG_AM654_PHY=y
CONFIG_USB_XHCI_PCI=y
2) ti-u-boot-2023.04+gitAUTOINC+8366064208/arch/arm/dts/k3-am642-evm.dts : add compatible string
&serdes0 {
serdes0_pcie_link: phy@0 {
reg = <0>;
cdns,num-lanes = <1>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
resets = <&serdes_wiz0 1>;
};
};
&pcie0_rc {
/* u-boot : pcie_dw_ti.c */
compatible = "ti,am654-pcie-rc";
status = "okay";
reset-gpios = <&main_gpio1 36 GPIO_ACTIVE_HIGH>;
phys = <&serdes0_pcie_link>;
phy-names = "pcie-phy";
num-lanes = <1>;
};
But I get empty results:
=> mw.l 0x0060103c 0x00000010 // gpio1_36 reset
=> mw.l 0x00601038 0x00000010 // gpio1_36 reset
=> pci enum
=> pci
And for "dm tree"
=> dm tree
nop 1 [ ] phy-j721e-wiz | |-- wiz@f000000
phy 0 [ ] cdns,torrent | | `-- serdes@f000000
pci 0 [ ] pcie_dw_ti | |-- pcie@f102000
I don't see "+" for pci and serdes.
I would greatly appreciate what's wrong with my approach.
Best Regards,
Hugh Chang
