[PATCH v2 3/3] ARM i.MX50: Add support for i.MX50 based Amazon Kindle e-book readers

[Alexander Kurz]

Hi Sasha,
thanks for noting and fixing those two issues,
it's perfectly fine for me.

Thanks, Alexander

On Mon, 24 Apr 2017, Sascha Hauer wrote:

> Hi Alexander,
> 
> On Sun, Apr 23, 2017 at 07:37:41PM +0200, Alexander Kurz wrote:
> > The Kindle Model No. D01100 (Kindle Wi-Fi), D01200 (Kindle Touch)
> > and EY21 (Kindle Paperwhite) are refered as the Kindle 4th and 5th generation.
> > Those models are based on an i.MX50 SoC and use LPDDR1 or LPDDR2 Memory.
> > 
> > The devices boot in internal boot mode from a build-in eMMC, alternatively
> > some devices may be set into USB-downloader mode by pressing a specific key
> > at startup.
> > 
> > Add support for the i.MX50 based Kindle device and make barebox a drop-in
> > replacement for the factory shipped u-boot image.
> > 
> > Notable features:
> > - Support for eMMC, USB, UART, I2C, SPI and Keys (except keyboard).
> > - LPDDR1 and LPDDR2 setup is done via DCD, the same imximage may be used
> >   for USB-startup and for installation.
> > - Support for vendor specific ATAGs that are required for the Kindle-System.
> > - usbserial barebox console access by pressing Select button at startup,
> >   alternatively full console support on connector J14.
> > 
> > Signed-off-by: Alexander Kurz <akurz at blala.de>
> > diff --git a/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/autoboot_timeout b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/autoboot_timeout
> > new file mode 100644
> > index 0000000..00750ed
> > --- /dev/null
> > +++ b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/autoboot_timeout
> > @@ -0,0 +1 @@
> > +3
> > diff --git a/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/boot.default b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/boot.default
> > new file mode 100644
> > index 0000000..3118b7a
> > --- /dev/null
> > +++ b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/boot.default
> > @@ -0,0 +1 @@
> > +mmc_kernel
> > diff --git a/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.console b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.console
> > new file mode 100644
> > index 0000000..d775310
> > --- /dev/null
> > +++ b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.console
> > @@ -0,0 +1 @@
> > +console=ttymxc0,115200
> 
> This shouldn't be needed. barebox will automatically add
> console=ttymxc0,115200 to the kernel command line when
> this UART is used as console in barebox.
> 
> > diff --git a/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.consoleblank b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.consoleblank
> > new file mode 100644
> > index 0000000..573541a
> > --- /dev/null
> > +++ b/arch/arm/boards/kindle-mx50/defaultenv-kindle-mx50/nv/linux.bootargs.consoleblank
> > @@ -0,0 +1 @@
> > +0
> 
> This results in "0" being passed to the kernel command line. You
> probably want to have "consoleblank=0", right?
> 
> I applied the series with these two things fixed. Is that ok for you?
> 
> Sascha
> 
> 
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