Re: [PATCH 12/22] ARM: gemini: DT for the Cortina Gemini SoC platforms

From: Arnd Bergmann
Date: Thu Jan 26 2017 - 18:24:52 EST


On Sunday, January 22, 2017 1:22:36 PM CET Linus Walleij wrote:
> +
> +/* Can we just use CONFIG_DEBUG_UART_PHYS and CONFIG_DEBUG_UART_VIRT? */
> +#define GEMINI_UART_BASE 0x42000000
> +#define GEMINI_UART_VBASE 0xf4200000
> +
> +/* This is needed for LL-debug/earlyprintk/debug-macro.S */
> +static struct map_desc gemini_io_desc[] __initdata = {
> + {
> + .virtual = GEMINI_UART_VBASE,
> + .pfn = __phys_to_pfn(GEMINI_UART_BASE),
> + .length = SZ_4K,
> + .type = MT_DEVICE,
> + },
> +};

I don't see why using CONFIG_DEBUG_UART_PHYS / CONFIG_DEBUG_UART_VIRT shouldn't
work here. Have you tried it?

Arnd