PCI: j721e: Add PCIe support for J722S SoC

TI's J722S SoC has one instance of PCIe namely PCIe0 which is a Gen3
single lane PCIe controller. Add support for the "ti,j722s-pcie-host"
compatible specific to J722S SoC.

Link: https://lore.kernel.org/r/20240524092349.158443-1-s-vadapalli@ti.com
Signed-off-by: Siddharth Vadapalli <s-vadapalli@ti.com>
Signed-off-by: Krzysztof Wilczyński <kwilczynski@kernel.org>

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 284f2e0..c9f3103 100644 (file)
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -386,6 +386,13 @@ static const struct j721e_pcie_data j784s4_pcie_ep_data = {
        .max_lanes = 4,
 };
 
+static const struct j721e_pcie_data j722s_pcie_rc_data = {
+       .mode = PCI_MODE_RC,
+       .linkdown_irq_regfield = J7200_LINK_DOWN,
+       .byte_access_allowed = true,
+       .max_lanes = 1,
+};
+
 static const struct of_device_id of_j721e_pcie_match[] = {
        {
                .compatible = "ti,j721e-pcie-host",
@@ -419,6 +426,10 @@ static const struct of_device_id of_j721e_pcie_match[] = {
                .compatible = "ti,j784s4-pcie-ep",
                .data = &j784s4_pcie_ep_data,
        },
+       {
+               .compatible = "ti,j722s-pcie-host",
+               .data = &j722s_pcie_rc_data,
+       },
        {},
 };