support of rockchip nanopiM4 2GB board

[Kever Yang]

Hi Deepak, Jagan,

On 2020/4/23 下午7:29, Jagan Teki wrote:
> On Thu, Apr 23, 2020 at 4:37 PM Deepak Das <deepakdas.linux at gmail.com> wrote:
>> Hi Jagan,
>>
>> upstream uboot has the support for nanopi M4 board with 4GB LPDDR3 RAM.
>> I have a nanopi M4 board with 2GB DDR3 RAM and able to boot this board
>> by using ddr3 configuration.
>>
>> +// SPDX-License-Identifier: GPL-2.0+
>> +/*
>> + * Copyright (C) 2019 Jagan Teki <jagan at amarulasolutions.com>
>> + */
>> +
>> +#include "rk3399-nanopi4-u-boot.dtsi"
>> +#include "rk3399-sdram-ddr3-1866.dtsi"
>> +
>> +/* #include "rk3399-sdram-lpddr3-samsung-4GB-1866.dtsi" */
>>
>> how to handle this situation? do we need to treat this as a new board
>> support?
> Possible approach is to check the chip type and vendor during probe
> and source the respective .dtsi
>
> YouMin and Kever, any  ideas?


We can auto detect the different capacity for the same DRAM type, but if 
the dram type

is not the same, it usually treat as different boards.

And this is the first time for a board use two different type DRAM, does 
both type of nanopi M4

with DDR3 and LPDDR3 are available on the market, or maybe one of them 
is internal version?


Thanks,

- Kever


>
> Jagan.
>
>