On Do, 2020-01-02 at 11:23 +0100, Rouven Czerwinski wrote:
> Mux UART1 and UART2 correctly to allow usage of DEBUG_LL.
There is only one UART intended as console on this board. Why are you
setting up 2 UARTs here?
Regards,
Lucas
> This commit has only been tested on nitrogen6q.
>
> Signed-off-by: Rouven Czerwinski <r.czerwinski@xxxxxxxxxxxxxx>
> ---
> .../boundarydevices-nitrogen6/lowlevel.c | 24
> +++++++++++++++++++
> 1 file changed, 24 insertions(+)
>
> diff --git a/arch/arm/boards/boundarydevices-nitrogen6/lowlevel.c
> b/arch/arm/boards/boundarydevices-nitrogen6/lowlevel.c
> index 74ff71fc24..47c231396d 100644
> --- a/arch/arm/boards/boundarydevices-nitrogen6/lowlevel.c
> +++ b/arch/arm/boards/boundarydevices-nitrogen6/lowlevel.c
> @@ -1,16 +1,40 @@
> #include <common.h>
> +#include <debug_ll.h>
> #include <mach/generic.h>
> #include <mach/esdctl.h>
> #include <asm/barebox-arm.h>
> +#include <serial/imx-uart.h>
>
> extern char __dtb_imx6q_nitrogen6x_start[];
>
> +static inline void setup_uart(void)
> +{
> + void __iomem *iomuxbase = (void *)MX6_IOMUXC_BASE_ADDR;
> +
> + //UART 1
> + writel(0x1, iomuxbase + 0x02a8);
> + writel(0x1, iomuxbase + 0x02ac);
> +
> + //UART 2
> + writel(0x4, iomuxbase + 0x00bc);
> + writel(0x4, iomuxbase + 0x00c0);
> + writel(0x0, iomuxbase + 0x0928);
> +
> + imx6_ungate_all_peripherals();
> + imx6_uart_setup((void *)MX6_UART2_BASE_ADDR);
> + pbl_set_putc(imx_uart_putc, (void *)MX6_UART2_BASE_ADDR);
> +}
> +
> +
> ENTRY_FUNCTION(start_imx6q_nitrogen6x_1g, r0, r1, r2)
> {
> void *fdt;
>
> imx6_cpu_lowlevel_init();
>
> + if (IS_ENABLED(CONFIG_DEBUG_LL))
> + setup_uart();
> +
> fdt = __dtb_imx6q_nitrogen6x_start + get_runtime_offset();
>
> imx6q_barebox_entry(fdt);
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