linux-kernel - [PATCH v13 5/5] PCI: j721e: add j784s4 PCIe configuration

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Message-ID: <20231128054402.2155183-6-s-vadapalli@ti.com>
Date:   Tue, 28 Nov 2023 11:14:02 +0530
From:   Siddharth Vadapalli <s-vadapalli@...com>
To:     <lpieralisi@...nel.org>, <robh@...nel.org>, <kw@...ux.com>,
        <bhelgaas@...gle.com>, <krzysztof.kozlowski+dt@...aro.org>,
        <conor+dt@...nel.org>, <vigneshr@...com>, <tjoseph@...ence.com>
CC:     <linux-pci@...r.kernel.org>, <devicetree@...r.kernel.org>,
        <linux-kernel@...r.kernel.org>,
        <linux-arm-kernel@...ts.infradead.org>, <r-gunasekaran@...com>,
        <danishanwar@...com>, <srk@...com>, <nm@...com>,
        <s-vadapalli@...com>
Subject: [PATCH v13 5/5] PCI: j721e: add j784s4 PCIe configuration

From: Matt Ranostay <mranostay@...com>

Add PCIe configuration for j784s4 platform which has 4x lane support.

Tested-by: Achal Verma <a-verma1@...com>
Signed-off-by: Matt Ranostay <mranostay@...com>
Reviewed-by: Roger Quadros <rogerq@...nel.org>
Signed-off-by: Achal Verma <a-verma1@...com>
Signed-off-by: Siddharth Vadapalli <s-vadapalli@...com>
---
 drivers/pci/controller/cadence/pci-j721e.c | 22 ++++++++++++++++++++++
 1 file changed, 22 insertions(+)

diff --git a/drivers/pci/controller/cadence/pci-j721e.c b/drivers/pci/controller/cadence/pci-j721e.c
index 645597856a1d..85718246016b 100644
--- a/drivers/pci/controller/cadence/pci-j721e.c
+++ b/drivers/pci/controller/cadence/pci-j721e.c
@@ -330,6 +330,20 @@ static const struct j721e_pcie_data am64_pcie_ep_data = {
 	.max_lanes = 1,
 };
 
+static const struct j721e_pcie_data j784s4_pcie_rc_data = {
+	.mode = PCI_MODE_RC,
+	.quirk_retrain_flag = true,
+	.byte_access_allowed = false,
+	.linkdown_irq_regfield = LINK_DOWN,
+	.max_lanes = 4,
+};
+
+static const struct j721e_pcie_data j784s4_pcie_ep_data = {
+	.mode = PCI_MODE_EP,
+	.linkdown_irq_regfield = LINK_DOWN,
+	.max_lanes = 4,
+};
+
 static const struct of_device_id of_j721e_pcie_match[] = {
 	{
 		.compatible = "ti,j721e-pcie-host",
@@ -355,6 +369,14 @@ static const struct of_device_id of_j721e_pcie_match[] = {
 		.compatible = "ti,am64-pcie-ep",
 		.data = &am64_pcie_ep_data,
 	},
+	{
+		.compatible = "ti,j784s4-pcie-host",
+		.data = &j784s4_pcie_rc_data,
+	},
+	{
+		.compatible = "ti,j784s4-pcie-ep",
+		.data = &j784s4_pcie_ep_data,
+	},
 	{},
 };
 
-- 
2.34.1