[PATCH 4/4] ARM: imx: imx5: Introduce and use UART_BASE_ADDR(n)

[Marek Vasut]

On 5/20/22 09:30, Stefano Babic wrote:
> Hi Marek,
> 
> On 24.04.22 23:44, Marek Vasut wrote:
>> Introduce helper macro UART_BASE_ADDR(n), which returns Nth UART base
>> address. Convert all board configurations to this new macro. This is the
>> first step toward switching CONFIG_MXC_UART_BASE to Kconfig. This is a
>> clean up, no functional change.
>>
>> The new macro contains compile-time test to verify N is in suitable
>> range. The test works such that it multiplies constant N by constant
>> double-negation of size of a non-empty structure, i.e. it multiplies
>> constant N by constant 1 in each successful compilation case.
>>
>> The non-empty structure may contain C11 _Static_assert(), make use of
>> this and place the kernel variant of static assert in there, so that
>> it performs the compile-time check for N in the correct range. Note
>> that it is not possible to directly use static_assert in compound
>> statements, hence this convoluted construct.
>>
>> Signed-off-by: Marek Vasut <marex at denx.de>
>> Cc: Fabio Estevam <festevam at denx.de>
>> Cc: Peng Fan <peng.fan at nxp.com>
>> Cc: Stefano Babic <sbabic at denx.de>
>> ---
> 
> I have not found the reason, but this breaks MX51:

All this UART_BASE_ADDR stuff is postponed, just drop for now.