At present the pinctrl nodes are not enabled in pre-relocation U-Boot so the UARTs do not correctly select the pinconfig to enable the UART pins. Fix this so that the U-Boot banner is printed.
This fixes serial output on rpi_3b_32b with the following config.txt options:
enable_uart=1 gpu_freq=250
Signed-off-by: Simon Glass sjg@chromium.org Fixes: 9821636b64 (bcm2835_pinctrl: Probe pre-reloc) ---
Changes in v2: - Update commit message
arch/arm/dts/bcm283x-u-boot.dtsi | 8 ++++++++ 1 file changed, 8 insertions(+)
diff --git a/arch/arm/dts/bcm283x-u-boot.dtsi b/arch/arm/dts/bcm283x-u-boot.dtsi index 36548dad62..68d03627f4 100644 --- a/arch/arm/dts/bcm283x-u-boot.dtsi +++ b/arch/arm/dts/bcm283x-u-boot.dtsi @@ -19,3 +19,11 @@ &gpio { u-boot,dm-pre-reloc; }; + +&uart0_gpio14 { + u-boot,dm-pre-reloc; +}; + +&uart1_gpio14 { + u-boot,dm-pre-reloc; +};