[PATCH 1/2] arm: mach-k3: am642: Update MAIN UART1 serial alias from 3 to 1
Vishal Mahaveer
vishalm at ti.com
Fri Jun 5 21:38:28 CEST 2026
The upstream device tree changed the serial alias for MAIN UART1 from
serial3 to serial1. Update the board initialization code to match this
change by modifying the UCLASS_SERIAL sequence number lookup.
This ensures proper pin control configuration for the UART used by
system firmware (SYSFW).
Signed-off-by: Vishal Mahaveer <vishalm at ti.com>
---
arch/arm/mach-k3/am64x/am642_init.c | 4 ++--
1 file changed, 2 insertions(+), 2 deletions(-)
diff --git a/arch/arm/mach-k3/am64x/am642_init.c b/arch/arm/mach-k3/am64x/am642_init.c
index a15adf1cb1e..d6cc7a85aae 100644
--- a/arch/arm/mach-k3/am64x/am642_init.c
+++ b/arch/arm/mach-k3/am64x/am642_init.c
@@ -212,14 +212,14 @@ void board_init_f(ulong dummy)
#if defined(CONFIG_K3_LOAD_SYSFW)
/*
- * Process pinctrl for serial3 a.k.a. MAIN UART1 module and continue
+ * Process pinctrl for serial1 a.k.a. MAIN UART1 module and continue
* regardless of the result of pinctrl. Do this without probing the
* device, but instead by searching the device that would request the
* given sequence number if probed. The UART will be used by the system
* firmware (SYSFW) image for various purposes and SYSFW depends on us
* to initialize its pin settings.
*/
- ret = uclass_find_device_by_seq(UCLASS_SERIAL, 3, &dev);
+ ret = uclass_find_device_by_seq(UCLASS_SERIAL, 1, &dev);
if (!ret)
pinctrl_select_state(dev, "default");
--
2.34.1
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