Re: [U-Boot] [PATCH v2 3/4] tegra: Implement pre-console putc() for fdt warning

Dear Simon Glass,

In message 1331325178-14634-3-git-send-email-sjg@chromium.org you wrote:

When there is not device tree file available to U-Boot, we panic. Implement board_pre_console_putc() so that this panic will be displayed on the serial console.

...

+void board_pre_console_putc(int ch) +{

...

• for (uart_addr = uart_reg_addr; *uart_addr; uart_addr++) {

• NS16550_t regs = (NS16550_t)*uart_addr;
  

• NS16550_init(regs, divisor);
  

• NS16550_putc(regs, ch);
  

• if (ch == '\n')
  

• 	NS16550_putc(regs, '\r');
  

• NS16550_drain(regs);
  

Why is this needed for every output character?

Actually, why is it needed at all?

Best regards,

Wolfgang Denk