linux-kernel - Re: [PATCH v2] ARM: debug-ll: add default address for digicolor

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Date:   Wed, 17 Apr 2019 17:18:08 +0300
From:   Baruch Siach <baruch@...s.co.il>
To:     Arnd Bergmann <arnd@...db.de>
Cc:     arm@...nel.org, Russell King <linux@...linux.org.uk>,
        linux-arm-kernel@...ts.infradead.org, linux-kernel@...r.kernel.org
Subject: Re: [PATCH v2] ARM: debug-ll: add default address for digicolor

Hi Arnd,

On Wed, Apr 17 2019, Arnd Bergmann wrote:
> The digicolor platform has three UARTs, but the Kconfig.debug
> file explicitly lists port zero as the one to be used for the
> console, while not providing any default values.
>
> This can get an automated randconfig build stuck in a loop
> waiting for the user to input the number. As we already know
> the physical address, this patch provides that number as
> default, along with a reasonable default value for the virtual
> address.
>
> Cc: Baruch Siach <baruch@...s.co.il>
> Signed-off-by: Arnd Bergmann <arnd@...db.de>
> ---
> v2: fix physical address
>
>  arch/arm/Kconfig.debug | 2 ++
>  1 file changed, 2 insertions(+)
>
> diff --git a/arch/arm/Kconfig.debug b/arch/arm/Kconfig.debug
> index 6d6e0330930b..12c0d29b75e3 100644
> --- a/arch/arm/Kconfig.debug
> +++ b/arch/arm/Kconfig.debug
> @@ -1677,6 +1677,7 @@ config DEBUG_UART_PHYS
>  	default 0xe6ee0000 if DEBUG_RCAR_GEN2_SCIF4
>  	default 0xe8008000 if DEBUG_R7S72100_SCIF2
>  	default 0xf0000be0 if ARCH_EBSA110
> +	default 0xf0100000 if DEBUG_DIGICOLOR_UA0

Should be 0xf0000000 for the physical address.

>  	default 0xf1012000 if DEBUG_MVEBU_UART0_ALTERNATE
>  	default 0xf1012100 if DEBUG_MVEBU_UART1_ALTERNATE
>  	default 0xf7fc9000 if DEBUG_BERLIN_UART
> @@ -1784,6 +1785,7 @@ config DEBUG_UART_VIRT
>  	default 0xfd012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_MV78XX0
>  	default 0xfd883000 if DEBUG_ALPINE_UART0
>  	default 0xfde12000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_DOVE
> +	default 0xfe000000 if DEBUG_DIGICOLOR_UA0

Maybe you intended to change the virtual address to 0xf0100000?

>  	DEFAULT 0xfe012000 if DEBUG_MVEBU_UART0_ALTERNATE && ARCH_ORION5X
>  	default 0xfe017000 if DEBUG_MMP_UART2
>  	default 0xfe018000 if DEBUG_MMP_UART3

baruch

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