From 61e3815a255f73db2e5cc669c737fb89756a0bdb Mon Sep 17 00:00:00 2001
From: Jianjun Wang <jianjun.wang@mediatek.com>
Date: Wed, 17 Apr 2024 11:19:50 +0800
Subject: [PATCH] soc/mediatek/mt8196: Enable PCIe support

Enable PCIe support for mt8196.

TEST=Build pass, show pcie init pass log:
mtk_pcie_domain_enable: PCIe link up success (1)
BUG=b:317009620

Signed-off-by: Jianjun Wang <jianjun.wang@mediatek.com>
Change-Id: I9c0aaa1c6da8c247b319e7ed2317dd871e276461
Reviewed-on: https://review.coreboot.org/c/coreboot/+/84698
Reviewed-by: Yidi Lin <yidilin@google.com>
Reviewed-by: Yu-Ping Wu <yupingso@google.com>
Tested-by: build bot (Jenkins) <no-reply@coreboot.org>
---
 src/soc/mediatek/mt8196/Kconfig |  1 +
 src/soc/mediatek/mt8196/soc.c   | 18 +++++++++++++++++-
 2 files changed, 18 insertions(+), 1 deletion(-)

diff --git a/src/soc/mediatek/mt8196/Kconfig b/src/soc/mediatek/mt8196/Kconfig
index 6d6f883a11..d97b092b91 100644
--- a/src/soc/mediatek/mt8196/Kconfig
+++ b/src/soc/mediatek/mt8196/Kconfig
@@ -11,6 +11,7 @@ config SOC_MEDIATEK_MT8196
 	select SOC_MEDIATEK_COMMON
 	select FLASH_DUAL_IO_READ
 	select ARM64_USE_ARCH_TIMER
+	select PCI
 
 if SOC_MEDIATEK_MT8196
 
diff --git a/src/soc/mediatek/mt8196/soc.c b/src/soc/mediatek/mt8196/soc.c
index b62c055426..eb72fca365 100644
--- a/src/soc/mediatek/mt8196/soc.c
+++ b/src/soc/mediatek/mt8196/soc.c
@@ -1,8 +1,10 @@
 /* SPDX-License-Identifier: GPL-2.0-only */
 
 #include <device/device.h>
+#include <device/pci.h>
 #include <soc/emi.h>
 #include <soc/mmu_operations.h>
+#include <soc/pcie.h>
 #include <symbols.h>
 
 static void soc_read_resources(struct device *dev)
@@ -21,9 +23,23 @@ static struct device_operations soc_ops = {
 	.init = soc_init,
 };
 
+static struct device_operations pci_domain_ops = {
+	.read_resources = &mtk_pcie_domain_read_resources,
+	.set_resources = &mtk_pcie_domain_set_resources,
+	.scan_bus = &pci_host_bridge_scan_bus,
+	.enable = &mtk_pcie_domain_enable,
+};
+
 static void enable_soc_dev(struct device *dev)
 {
-	dev->ops = &soc_ops;
+	if (dev->path.type == DEVICE_PATH_CPU_CLUSTER) {
+		dev->ops = &soc_ops;
+	} else if (dev->path.type == DEVICE_PATH_DOMAIN) {
+		if (mainboard_needs_pcie_init())
+			dev->ops = &pci_domain_ops;
+		else
+			printk(BIOS_DEBUG, "Skip setting PCIe ops\n");
+	}
 }
 
 struct chip_operations soc_mediatek_mt8196_ops = {