ARM: meson: documentation: add timer documentation

Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: meson6: clocksource: add Meson6 timer support

Meson6 SoCs are equipped with 5 32-bit timers, called TIMER_A, TIMER_B,
TIMER_C, TIMER_D and TIMER_E.

The driver is providing clocksource support for the 32-bit counter using
TIMER_E. Clockevents are also supported using TIMER_A.

Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: meson: documentation: add bindings documentation

Add vendor prefixes and basic documentation for MesonX SoCs bindings

Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: meson: add basic support for MesonX SoCs

This patch adds the basic machine file for the MesonX SoCs. Only Meson6
is populated.

Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: meson: dts: add basic Meson/Meson6/Meson6-atv1200 DTSI/DTS

The Meson6 SoC is produced by Amlogic inc. and it is based on 2 Cortex
A9 and an ARM Mali-400 GPU.
This patch adds two basic DTSI for the preliminary support of Meson and
Meson6 SoCs. Another DTS is also added for supporting the atv1200 board,
produced by Geniatech inc.

Signed-off-by: Carlo Caione <carlo@caione.org>
ARM: meson: update multi_v7_defconfig

This patch updates the multi_v7_defconfig with the CONFIG_* needed by
the just added Meson anch. It also adds a new defconfig specifically for
the Meson SoCs.

Signed-off-by: Carlo Caione <carlo@caione.org>
of: Provide a function to request and map memory

A call to of_iomap does not request the memory region. This patch adds the
function of_io_request_and_map which requests the memory region before
mapping it.

Signed-off-by: Matthias Brugger <matthias.bgg@gmail.com>
Suggested-by: Thomas Gleixner <tglx@linutronix.de>
Suggested-by: Rob Herring <robh@kernel.org>
Acked-by: Rob Herring <robh@kernel.org>
Signed-off-by: Daniel Lezcano <daniel.lezcano@linaro.org>