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The patch "710-pci-pcie-mediatek-add-support-for-coherent-DMA.patch" makes use of "syscon_regmap_lookup_by_phandle" which requires that "syscon" be in the compatible list. Without this patch, PCIe probe will fail with the following error: [ 1.287467] mtk-pcie 1a143000.pcie: host bridge /pcie@1a143000 ranges: [ 1.294019] mtk-pcie 1a143000.pcie: Parsing ranges property... [ 1.299901] mtk-pcie 1a143000.pcie: MEM 0x0020000000..0x0027ffffff -> 0x0020000000 [ 1.307954] mtk-pcie 1a143000.pcie: missing hifsys node [ 1.313185] mtk-pcie: probe of 1a143000.pcie failed with error -22 Fixes: #12182 Fixes: 1b3612a ("kernel: bump 5.15 to 5.15.158") Signed-off-by: Rany Hany <rany_hany@riseup.net>