Hi Kever, On 24/04/20 3:45 pm, Kever Yang wrote: > 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.li...@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 <ja...@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. >> >> > >
