On Tue, 2020-06-16 at 18:59 +0200, Michael Nazzareno Trimarchi wrote:
On Tue, Jun 16, 2020 at 6:57 PM David Woodhouse dwmw2@infradead.org wrote:
On Tue, 2020-06-16 at 18:21 +0200, Michael Nazzareno Trimarchi wrote:
Hi David
On Tue, Jun 16, 2020 at 6:16 PM David Woodhouse dwmw2@infradead.org wrote:
The Banana Pi R2 bootloader will load U-Boot from either the internal eMMC, or the external SD card if the latter is present.
If booted from the eMMC (and an SD card is subsequently inserted), both work from U-Boot. Both also work from Linux, whichever device is booted from.
If booted from SD, the internal eMMC cannot be accessed from U-Boot. This makes it slightly difficult for me to write a U-Boot script which installs OpenWRT from the SD card to the internal eMMC...
I'm thinking that bootrom do the right job for you when both are working.
Yes. It does seem likely that when loading U-Boot from the eMMC, the preloader is initialising it for us. But when the preloader loads U-Boot from the SD card, it possibly doesn't initialise the eMMC controller at all.
The Linux driver does cope with this, and drives the internal eMMC. Perhaps there's just some init code missing from the U-Boot mtk-sd driver?
what dts are you using and config? I don't find Banana PI R2
It's mt7623n_bpir2_defconfig