support of rockchip nanopiM4 2GB board

support of rockchip nanopiM4 2GB board

[Deepak Das]

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@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?

regards,
Deepak

support of rockchip nanopiM4 2GB board

[Jagan Teki]

On Thu, Apr 23, 2020 at 4:37 PM Deepak Das <deepakdas.linux@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@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?

Jagan.

support of rockchip nanopiM4 2GB board

[Kever Yang]

Hi Deepak, Jagan,

On 2020/4/23 ??7:29, Jagan Teki wrote:
> On Thu, Apr 23, 2020 at 4:37 PM Deepak Das <deepakdas.linux@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@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.
>
>

support of rockchip nanopiM4 2GB board

[Deepak Das]

Hi Kever,

On 24/04/20 3:45 pm, Kever Yang wrote:
> Hi Deepak, Jagan,
>
> On 2020/4/23 ??7:29, Jagan Teki wrote:
>> On Thu, Apr 23, 2020 at 4:37 PM Deepak Das <deepakdas.linux@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@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.

I don't see any other difference in these two board versions apart from DRAM type.
I will drop a patch to add support of this board after some basic testing.

>
> 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?
>
yes, both are available at amazon.

https://www.amazon.com/FriendlyARM-Rockchip-Dual-Band-Support-Learning/dp/B07GXNK8M1

https://www.amazon.com/FriendlyARM-Rockchip-Dual-Band-Support-Learning/dp/B07H9S92X6

regards,

Deepak

>
> Thanks,
>
> - Kever
>
>
>>
>> Jagan.
>>
>>
>
>