[PATCH 1/3] arm: Add support for Qualcomm IPQ40xx family

[Tom Rini <trini@konsulko.com>]

On Fri, Jul 10, 2020 at 05:52:51PM +0200, Robert Marko wrote:
> On Fri, Jul 10, 2020 at 5:25 PM Tom Rini <trini@konsulko.com> wrote:
> 
> > On Mon, Jul 06, 2020 at 10:37:54AM +0200, Robert Marko wrote:
> >
> > > This introduces initial support for the popular Qualcomm
> > > IPQ40x8 and IPQ40x9 WiSoC series.
> > >
> > > IPQ40xx series have 4x Cortex A7 ARM-v7A cores.
> > > Supported are: IPQ4018, IPQ4019, IPQ4028 and IPQ4029.
> > >
> > > IPQ40x8 and IPQ40x9 use the same cores, but differ in
> > > addressable RAM size (1GB for IPQ40x9 and 256MB for IPQ40x8)
> > > and supported peripherals (IPQ40x8 lacks RGMII, LCD controller
> > > and EMMC/SDHCI controllers).
> > >
> > > IQP4028/IPQ4029 models differ from IPQ4018/IPQ4019 only
> > > by their rated temperatures rates with IPQ402X models being
> > > rated for wider temperature ranges.
> > >
> > > Initially this supports:
> > > * Simple clock driver (Only for UART1 now, will be extended)
> > > * Pinctrl driver (Supports UARTX and GPIO now, will be extended)
> > > * GPIOs already supported by msm_gpio driver with updates
> > > * UARTs already supported by serial_msm driver with updates
> > >
> > > Further peripherals will come in later patches.
> > >
> > > Signed-off-by: Robert Marko <robert.marko@sartura.hr>
> > > ---
> > >  MAINTAINERS                                |   7 ++
> > >  arch/arm/Kconfig                           |  13 ++
> > >  arch/arm/Makefile                          |   1 +
> > >  arch/arm/dts/qcom-ipq4019.dtsi             |  79 ++++++++++++
> >
> > The goal with dts files (that aren't the -u-boot.dtsi ones of course) is
> > that they come from upstream Linux.  How far along is that with this
> > SoC?  Everything else here looks fine, thanks.
> >
> Well, I tried to keep as much as possible identical or really similar to
> the upstream Linux nodes,
> but there are still differences due to how drivers are simplified.

OK.  You should be able to take the base upstream DTS files and between
things like CONFIG_OF_REMOVE_PROPS / CONFIG_OF_SPL_REMOVE_PROPS and the
automatically included -u-boot.dtsi files make any further changes that
we have to make for space reasons or other tweaks.

-- 
Tom
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