3 files changed, 14 insertions, 0 deletions
diff --git a/drivers/mfd/intel-lpss-pci.c b/drivers/mfd/intel-lpss-pci.c
index a59aa147959b..5513fae6be92 100644
--- a/drivers/mfd/intel-lpss-pci.c
+++ b/drivers/mfd/intel-lpss-pci.c
@@ -17,6 +17,15 @@
 
 #include "intel-lpss.h"
 
+/* Some DSDTs have an unused GEXP ACPI device conflicting with I2C4 resources */
+static const struct pci_device_id ignore_resource_conflicts_ids[] = {
+	/* Microsoft Surface Go (version 1) I2C4 */
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1182), },
+	/* Microsoft Surface Go 2 I2C4 */
+	{ PCI_DEVICE_SUB(PCI_VENDOR_ID_INTEL, 0x9d64, 0x152d, 0x1237), },
+	{ }
+};
+
 static int intel_lpss_pci_probe(struct pci_dev *pdev,
 				const struct pci_device_id *id)
 {
@@ -35,6 +44,9 @@ static int intel_lpss_pci_probe(struct pci_dev *pdev,
 	info->mem = &pdev->resource[0];
 	info->irq = pdev->irq;
 
+	if (pci_match_id(ignore_resource_conflicts_ids, pdev))
+		info->ignore_resource_conflicts = true;
+
 	pdev->d3cold_delay = 0;
 
 	/* Probably it is enough to set this for iDMA capable devices only */
diff --git a/drivers/mfd/intel-lpss.c b/drivers/mfd/intel-lpss.c
index 0e15afc39f54..cfbee2cfba6b 100644
--- a/drivers/mfd/intel-lpss.c
+++ b/drivers/mfd/intel-lpss.c
@@ -401,6 +401,7 @@ int intel_lpss_probe(struct device *dev,
 		return ret;
 
 	lpss->cell->swnode = info->swnode;
+	lpss->cell->ignore_resource_conflicts = info->ignore_resource_conflicts;
 
 	intel_lpss_init_dev(lpss);
 
diff --git a/drivers/mfd/intel-lpss.h b/drivers/mfd/intel-lpss.h
index 22dbc4aed793..062ce95b68b9 100644
--- a/drivers/mfd/intel-lpss.h
+++ b/drivers/mfd/intel-lpss.h
@@ -19,6 +19,7 @@ struct software_node;
 
 struct intel_lpss_platform_info {
 	struct resource *mem;
+	bool ignore_resource_conflicts;
 	int irq;
 	unsigned long clk_rate;
 	const char *clk_con_id;