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wifi: mt76: Use of_reserved_mem_region_to_resource() for "memory-region"

PATCH In review Rob Herring (Arm) 2 participants 2 messages Oct 31, 2025 – Nov 3, 2025

Subsystems (2)
Arm MediaTek MediaTek MT76 wireless LAN driver
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Rob Herring (Arm)

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PATCH v4 1/1 wifi: mt76: Use of_reserved_mem_region_to_resource() for "memory-region"

Use the newly added of_reserved_mem_region_to_resource() function to handle "memory-region" properties.

Signed-off-by Rob Herring (Arm) <[email protected]>

---
v4:
- Rebase on v6.18-rc1
v3:
- Rebase on v6.17-rc1

v2:
- Split to separate patch

---
 .../net/wireless/mediatek/mt76/mt7915/soc.c   | 21 +++++++------------
 1 file changed, 8 insertions(+), 13 deletions(-)
drivers/net/wireless/mediatek/mt76/mt7915/soc.c +8 -13
index c823a7554a3a..5f19b506cc50 100644
@@ -284,20 +284,15 @@ static int mt798x_wmac_coninfra_check(struct mt7915_dev *dev)
 static int mt798x_wmac_coninfra_setup(struct mt7915_dev *dev)
 {
 	struct device *pdev = dev->mt76.dev;
-	struct reserved_mem *rmem;
-	struct device_node *np;
+	struct resource res;
 	u32 val;
+	int ret;
 
-	np = of_parse_phandle(pdev->of_node, "memory-region", 0);
-	if (!np)
-		return -EINVAL;
-
-	rmem = of_reserved_mem_lookup(np);
-	of_node_put(np);
-	if (!rmem)
-		return -EINVAL;
+	ret = of_reserved_mem_region_to_resource(pdev->of_node, 0, &res);
+	if (ret)
+		return ret;
 
-	val = (rmem->base >> 16) & MT_TOP_MCU_EMI_BASE_MASK;
+	val = (res.start >> 16) & MT_TOP_MCU_EMI_BASE_MASK;
 
 	if (is_mt7986(&dev->mt76)) {
 		/* Set conninfra subsys PLL check */

@@ -318,8 +313,8 @@ static int mt798x_wmac_coninfra_setup(struct mt7915_dev *dev)
 			       MT_TOP_EFUSE_BASE_MASK, 0x11f20000 >> 16);
 	}
 
-	mt76_wr(dev, MT_INFRA_BUS_EMI_START, rmem->base);
-	mt76_wr(dev, MT_INFRA_BUS_EMI_END, rmem->size);
+	mt76_wr(dev, MT_INFRA_BUS_EMI_START, res.start);
+	mt76_wr(dev, MT_INFRA_BUS_EMI_END, resource_size(&res));
 
 	mt76_rr(dev, MT_CONN_INFRA_EFUSE);
Signature · 1 line
2.51.0