PCI: sg2042: Add Sophgo SG2042 PCIe driver

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Add support for PCIe controller in Sophgo SG2042 SoC. The controller uses
the Cadence PCIe core programmed by pcie-cadence* common driver. The PCIe
controller in SG2042 works in host mode only, supporting data rate up to 16
GT/s and lanes up to x16 or x8.

Signed-off-by: Chen Wang <unicorn_wang@outlook.com>
[mani: reworded description and minor code cleanups]
Signed-off-by: Manivannan Sadhasivam <mani@kernel.org>
Link: https://patch.msgid.link/01b0a57cd9dba8bed7c1f2d52997046c2c6f042b.1757643388.git.unicorn_wang@outlook.com

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Chen Wang 2025-09-12 10:36:31 +08:00 • committed by Manivannan Sadhasivam

parent 49a6c160ad

commit 1c72774df0

3 changed files with 145 additions and 0 deletions

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10

drivers/pci/controller/cadence/Kconfig

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1

drivers/pci/controller/cadence/Makefile

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134

drivers/pci/controller/cadence/pcie-sg2042.c

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