Re: [PATCH] ARM: dts: Fix booting on Rinato market device

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On pią, 2014-11-07 at 20:50 +0900, Chanwoo Choi wrote:
> Hi Krzysztof,
> 
> On 11/07/2014 08:44 PM, Krzysztof Kozlowski wrote:
> > The bootloader on market Rinato (Gear 2) device checks for revision in
> > compatible field of DTB. If it is not present or lower than required
> > then booting fails with: "Could not do normal boot. (no DTB found)".
> > 
> > Log of bootloader in case of failure:
> > h/w: revision  = 0x06
> > h/w: schematic = SM-R380_Rev0.5_Final_0205
> > date = 2000/01/01 12:00:21 (UTC)
> > cmu_div:4, div:5, src_clk:800000000, pixel_clk:31860720
> > load_kernel: loading boot image from 57344.. (BOOT)
> > load_kernel: found zImage, size: 0x3267e8
> > 0xbc Error!
> > Verify_Binary_Signature: failed.
> > pit_check_signature (BOOT) invalid.
> > load_kernel: found custom kernel (ret:-2147483647)
> >  No need to update kernel type.
> > Detected board: samsung,rinato-rev06
> > Could not do normal boot. (no DTB found)
> > : Entering usb mode for SM-R380_EUR_XX (65535)..
> > 
> > Add a "rev06" suffix to compatible to satisfy the bootloader.
> > 
> > Signed-off-by: Krzysztof Kozlowski <k.kozlowski@xxxxxxxxxxx>
> > ---
> >  arch/arm/boot/dts/exynos3250-rinato.dts | 3 ++-
> >  1 file changed, 2 insertions(+), 1 deletion(-)
> > 
> > diff --git a/arch/arm/boot/dts/exynos3250-rinato.dts b/arch/arm/boot/dts/exynos3250-rinato.dts
> > index 84380fa13e37..f72ba0a1d915 100644
> > --- a/arch/arm/boot/dts/exynos3250-rinato.dts
> > +++ b/arch/arm/boot/dts/exynos3250-rinato.dts
> > @@ -18,7 +18,8 @@
> >  
> >  / {
> >  	model = "Samsung Rinato board";
> > -	compatible = "samsung,rinato", "samsung,exynos3250", "samsung,exynos3";
> > +	compatible = "samsung,rinato", "samsung,rinato-rev06",
> > +			"samsung,exynos3250", "samsung,exynos3";
> 
> I think it is wrong. The released bootloader from Samsung is not u-boot.
> Instead, you have to update u-boot to support Exynos3250-basd Rinato board.

The bootloader on device also was not a u-boot. So the fix is for native
bootloader delivered on device.

I do not insist that this is proper fix. It was just needed to boot the
device with custom kernel.

Anyway, thanks for comments!

Best regards,
Krzysztof

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