From: Jon Hunter jonathanh@nvidia.com
commit 476e23f4c540949ac5ea4fad4f6f6fa0e2d41f42 upstream.
The Jetson Xavier NX board routes UARTA to the 40-pin header and UARTC to a 12-pin debug header. The UARTs can be used by either the Tegra Combined UART (TCU) driver or the Tegra 8250 driver. By default, the TCU will use UARTC on Jetson Xavier NX. Currently, device-tree for Xavier NX enables the TCU and the Tegra 8250 node for UARTC. Fix this by disabling the Tegra 8250 node for UARTC and enabling the Tegra 8250 node for UARTA.
Fixes: 3f9efbbe57bc ("arm64: tegra: Add support for Jetson Xavier NX") Cc: stable@vger.kernel.org Signed-off-by: Jon Hunter jonathanh@nvidia.com Signed-off-by: Thierry Reding treding@nvidia.com Signed-off-by: Greg Kroah-Hartman gregkh@linuxfoundation.org
--- arch/arm64/boot/dts/nvidia/tegra194-p3668-0000.dtsi | 2 +- 1 file changed, 1 insertion(+), 1 deletion(-)
--- a/arch/arm64/boot/dts/nvidia/tegra194-p3668-0000.dtsi +++ b/arch/arm64/boot/dts/nvidia/tegra194-p3668-0000.dtsi @@ -54,7 +54,7 @@ status = "okay"; };
- serial@c280000 { + serial@3100000 { status = "okay"; };