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arm64: dts: ti: k3-am68-sk: Add DT node for PCIe

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AM68 Starter kit features with one PCIe M.2 Key M connector
interfaced via two SerDes lanes. Update the SerDes configuration
for PCIe.

Signed-off-by: Sinthu Raja <sinthu.raja@ti.com>
Signed-off-by: Ravi Gunasekaran <r-gunasekaran@ti.com>
Link: https://lore.kernel.org/r/20230921100039.19897-3-r-gunasekaran@ti.com
Signed-off-by: Vignesh Raghavendra <vigneshr@ti.com>
This commit is contained in:
Sinthu Raja 2023-09-21 15:30:38 +05:30 committed by Vignesh Raghavendra
parent b024d1a853
commit 73e8ec1b2d
1 changed files with 29 additions and 0 deletions
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29
arch/arm64/boot/dts/ti/k3-am68-sk-base-board.dts
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@ -553,3 +553,32 @@
};
};
};
&serdes_ln_ctrl {
idle-states = <J721S2_SERDES0_LANE0_PCIE1_LANE0>, <J721S2_SERDES0_LANE1_PCIE1_LANE1>,
<J721S2_SERDES0_LANE2_USB_SWAP>, <J721S2_SERDES0_LANE3_USB>;
};
&serdes_refclk {
clock-frequency = <100000000>;
};
&serdes0 {
status = "okay";
serdes0_pcie_link: phy@0 {
reg = <0>;
cdns,num-lanes = <2>;
#phy-cells = <0>;
cdns,phy-type = <PHY_TYPE_PCIE>;
resets = <&serdes_wiz0 1>, <&serdes_wiz0 2>;
};
};
&pcie1_rc {
status = "okay";
reset-gpios = <&exp1 10 GPIO_ACTIVE_HIGH>;
phys = <&serdes0_pcie_link>;
phy-names = "pcie-phy";
num-lanes = <2>;
};