2024-05-24 09:24:21

by Siddharth Vadapalli

[permalink] [raw]
Subject: [PATCH] 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.

Signed-off-by: Siddharth Vadapalli <[email protected]>
---

Hello,

This patch is based on linux-next tagged next-20240523.
The dt-bindings patch for the compatible at:
https://lore.kernel.org/r/[email protected]/
has been accepted and merged:
https://git.kernel.org/pci/pci/c/01fec70206d4

Regards,
Siddharth.

drivers/pci/controller/cadence/pci-j721e.c | 11 +++++++++++
1 file changed, 11 insertions(+)

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 85718246016b..cde6cd77e406 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -344,6 +344,13 @@ 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",
@@ -377,6 +384,10 @@ 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,
+ },
{},
};

--
2.40.1