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Date:   Fri, 05 Jun 2020 19:43:55 +0530
From:   Sai Prakash Ranjan <saiprakash.ranjan@codeaurora.org>
To:     Jonathan Marek <jonathan@marek.ca>
Cc:     Bjorn Andersson <bjorn.andersson@linaro.org>,
        linux-arm-msm@vger.kernel.org, Andy Gross <agross@kernel.org>,
        Rob Herring <robh+dt@kernel.org>,
        "open list:OPEN FIRMWARE AND FLATTENED DEVICE TREE BINDINGS" 
        <devicetree@vger.kernel.org>,
        open list <linux-kernel@vger.kernel.org>,
        devicetree-owner@vger.kernel.org
Subject: Re: [PATCH 1/6] arm64: dts: qcom: sm8150: add apps_smmu node
In-Reply-To: <8cf134f0-381f-7765-2496-e5abd77f3087@marek.ca>
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 <91eb7ee0e549b10724c724aebfd91996@codeaurora.org>
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On 2020-06-05 19:40, Jonathan Marek wrote:
> 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.
> 

Yes this exact error.

-Sai

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