[PATCH RFC 4/4] stmmac: s32: enable multi irqs mode

Jan Petrous via B4 Relay devnull+jan.petrous.oss.nxp.com at kernel.org
Sun Dec 14 14:15:40 PST 2025


From: "Jan Petrous (OSS)" <jan.petrous at oss.nxp.com>

Signalize support for multi irq mode.

>From now, if yoused old DT node, without channel IRQs set,
the driver fails to init with the following error:

[4.925420] s32-dwmac 4033c000.ethernet eth0: stmmac_request_irq_multi_msi: alloc rx-0  MSI -6 (error: -22)

Signed-off-by: Jan Petrous (OSS) <jan.petrous at oss.nxp.com>
---
 drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c b/drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c
index 5a485ee98fa7..284e2067a00b 100644
--- a/drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c
+++ b/drivers/net/ethernet/stmicro/stmmac/dwmac-s32.c
@@ -2,7 +2,7 @@
 /*
  * NXP S32G/R GMAC glue layer
  *
- * Copyright 2019-2024 NXP
+ * Copyright 2019-2025 NXP
  *
  */
 
@@ -149,6 +149,7 @@ static int s32_dwmac_probe(struct platform_device *pdev)
 	plat->core_type = DWMAC_CORE_GMAC4;
 	plat->pmt = 1;
 	plat->flags |= STMMAC_FLAG_SPH_DISABLE;
+	plat->flags |= STMMAC_FLAG_MULTI_MSI_EN;
 	plat->rx_fifo_size = 20480;
 	plat->tx_fifo_size = 20480;
 

-- 
2.47.0





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