diff options
Diffstat (limited to 'src')
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/Kconfig | 1 | ||||
| -rw-r--r-- | src/mainboard/lowrisc/nexys4ddr/uart.c | 13 |
2 files changed, 2 insertions, 12 deletions
diff --git a/src/mainboard/lowrisc/nexys4ddr/Kconfig b/src/mainboard/lowrisc/nexys4ddr/Kconfig index f0a3637d1c..5a6bfb2503 100644 --- a/src/mainboard/lowrisc/nexys4ddr/Kconfig +++ b/src/mainboard/lowrisc/nexys4ddr/Kconfig @@ -21,7 +21,6 @@ config BOARD_SPECIFIC_OPTIONS # dummy select DRIVERS_UART_8250MEM select BOOT_DEVICE_NOT_SPI_FLASH select UART_OVERRIDE_REFCLK - select UART_OVERRIDE_INPUT_CLOCK_DIVIDER config MAINBOARD_DIR string diff --git a/src/mainboard/lowrisc/nexys4ddr/uart.c b/src/mainboard/lowrisc/nexys4ddr/uart.c index e3c233f80b..d19ce520d8 100644 --- a/src/mainboard/lowrisc/nexys4ddr/uart.c +++ b/src/mainboard/lowrisc/nexys4ddr/uart.c @@ -24,17 +24,8 @@ uintptr_t uart_platform_base(int idx) return (uintptr_t) 0x42000000; } -/* these are currently not quite right but they are here for reference - * and will be fixed when lowrisc gives us a standard clock - * and set of values. */ -// divisor = clk_freq / (16 * Baud) -unsigned int uart_input_clock_divider(void) -{ - return (25 * 1000 * 1000u / (16u * 115200u)) % 0x100; -} - -// System clock 25 MHz, 115200 baud rate +/* The clock which the UART is based on */ unsigned int uart_platform_refclk(void) { - return (25 * 1000 * 1000u / (16u * 115200u)) >> 8; + return 25 * MHz; } |