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| -rw-r--r-- | doc/board/starfive/jh7110_common.rst | 14 |
1 files changed, 14 insertions, 0 deletions
diff --git a/doc/board/starfive/jh7110_common.rst b/doc/board/starfive/jh7110_common.rst index fb8d87a1551..4a8058ee5da 100644 --- a/doc/board/starfive/jh7110_common.rst +++ b/doc/board/starfive/jh7110_common.rst @@ -87,3 +87,17 @@ u-boot.itb via the Y-modem protocol. Due to restrictions of the boot ROM not all X-modem implementations are compatible. The package tio (https://github.com/tio/tio) has been found to be usable. + +Debug UART +---------- + +By default the SBI interface is used for the debug UART. But this only works +in main U-Boot. To enable the debug UART in SPL, too, use the following +settings:: + + CONFIG_DEBUG_UART=y + CONFIG_DEBUG_UART_NS16550=y + CONFIG_DEBUG_UART_BASE=0x10000000 + CONFIG_SPL_DEBUG_UART_BASE=0x10000000 + CONFIG_DEBUG_UART_CLOCK=24000000 + CONFIG_DEBUG_UART_SHIFT=2 |