diff options
| -rw-r--r-- | include/sbi_utils/fdt/fdt_helper.h | 2 | ||||
| -rw-r--r-- | lib/utils/fdt/fdt_helper.c | 21 |
2 files changed, 23 insertions, 0 deletions
diff --git a/include/sbi_utils/fdt/fdt_helper.h b/include/sbi_utils/fdt/fdt_helper.h index 06b8a62a..d3cc791e 100644 --- a/include/sbi_utils/fdt/fdt_helper.h +++ b/include/sbi_utils/fdt/fdt_helper.h @@ -14,6 +14,8 @@ struct platform_uart_data { unsigned long addr; unsigned long freq; unsigned long baud; + unsigned long reg_shift; + unsigned long reg_io_width; }; struct platform_plic_data { diff --git a/lib/utils/fdt/fdt_helper.c b/lib/utils/fdt/fdt_helper.c index 07f72212..f620e742 100644 --- a/lib/utils/fdt/fdt_helper.c +++ b/lib/utils/fdt/fdt_helper.c @@ -13,6 +13,11 @@ #include <sbi/sbi_scratch.h> #include <sbi_utils/fdt/fdt_helper.h> +#define DEFAULT_UART_FREQ 0 +#define DEFAULT_UART_BAUD 115200 +#define DEFAULT_UART_REG_SHIFT 0 +#define DEFAULT_UART_REG_IO_WIDTH 1 + static int fdt_get_node_addr_size(void *fdt, int node, unsigned long *addr, unsigned long *size) { @@ -81,10 +86,26 @@ int fdt_parse_uart8250(void *fdt, struct platform_uart_data *uart, val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "clock-frequency", &len); if (len > 0 && val) uart->freq = fdt32_to_cpu(*val); + else + uart->freq = DEFAULT_UART_FREQ; val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "current-speed", &len); if (len > 0 && val) uart->baud = fdt32_to_cpu(*val); + else + uart->baud = DEFAULT_UART_BAUD; + + val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "reg-shift", &len); + if (len > 0 && val) + uart->reg_shift = fdt32_to_cpu(*val); + else + uart->reg_shift = DEFAULT_UART_REG_SHIFT; + + val = (fdt32_t *)fdt_getprop(fdt, nodeoffset, "reg-io-width", &len); + if (len > 0 && val) + uart->reg_io_width = fdt32_to_cpu(*val); + else + uart->reg_io_width = DEFAULT_UART_REG_IO_WIDTH; return 0; } |