Re: [PATCH 1/6] arm64: dts: qcom: sm8150: add apps_smmu node

[Jonathan Marek]

On 6/5/20 10:03 AM, Sai Prakash Ranjan wrote:
> On 2020-05-29 08:45, Bjorn Andersson wrote:
> > On Thu 28 May 20:02 PDT 2020, Jonathan Marek wrote:
> >
> > > On 5/28/20 10:52 PM, Bjorn Andersson wrote:
> > > > On Sat 23 May 19:38 PDT 2020, Jonathan Marek wrote:
> > > >
> > > > > Add the apps_smmu node for sm8150. Note that adding the iommus 
> > > field for
> > > > > UFS is required because initializing the iommu removes the bypass 
> > > mapping
> > > > > that created by the bootloader.
> > > > >
> > > >
> > > > Unrelated to the patch itself; how do you disable the splash screen on
> > > > 8150? "fastboot oem select-display-panel none" doesn't seem to work 
> > > for
> > > > me on the MTP - and hence this would prevent my device from booting.
> > > >
> > > > Thanks,
> > > > Bjorn
> > > >
> > >
> > > I don't have a MTP, but on HDK855, "fastboot oem select-display-panel 
> > > none"
> > > combined with setting the physical switch to HDMI mode (which 
> > > switches off
> > > the 1440x2560 panel) gets it to not setup the display at all (just the
> > > fastboot command isn't enough).
> >
> > Okay, I don't think we have anything equivalent on the MTP, but good to
> > know.
>
> Actually I tried out this in SM8150 MTP and it works fine for me,
>
> "fastboot set_active a; fastboot set_active b; fastboot set_active a; 
> fastboot oem select-display-panel none; fastboot reboot bootloader; 
> fastboot boot boot-sm8150.img"
>
> Also I need to switch slots everytime like above, otherwise I always see 
> some error
> while loading the boot image.

What is the error? If it is "FAILED (remote: Failed to load/authenticate 
boot image: Load Error)" then flashing/erasing boot_a will make it go 
away ("fastboot erase boot_a") for the next 6 or so "failed" boots.

> Thanks,
> Sai