[PATCH v2 0/3] Add initial support for exynos5420-chagallwifi

[Henrik Grimler]

Samsung's tablet Galaxy Tab S 10.5" (wifi) has codename chagallwifi
and is one of several tablets released in 2013 - 2014 based on Exynos
5420.  This initial devicetree adds support for accessing device over
USB or UART, and allows using a rootfs in either the internal eMMC or
an external sdcard.  4 out of 8 CPUs are brought up when device boots,
which is the same as on the somewhat similar device
exynos5420-arndale-octa.

Patch 2 is necessary after a secure-firmware node is added, otherwise
device hangs during the CPU1BOOT secure monitor call. Without the
secure-firmware node we are not able to bring up any secondary CPUs.

Changes since v1
================

Fix mmc_0 and usbdrd in patch 3: 
* Remove extra, non supported, options from mmc_0 node 
* Do not set usbdrd supplies. Usb networking does not work with them 
  specified, but it works fine with dummy regulators

Henrik Grimler (3):
  dt-bindings: arm: samsung: document chagallwifi board binding
  ARM: exynos: only do SMC_CMD_CPU1BOOT call on Exynos4
  ARM: dts: Add support for Samsung Chagallwifi

 .../bindings/arm/samsung/samsung-boards.yaml  |   1 +
 arch/arm/boot/dts/Makefile                    |   1 +
 arch/arm/boot/dts/exynos5420-chagallwifi.dts  |  57 ++
 .../dts/exynos5420-galaxy-tab-common.dtsi     | 633 ++++++++++++++++++
 arch/arm/mach-exynos/firmware.c               |   4 +-
 5 files changed, 695 insertions(+), 1 deletion(-)
 create mode 100644 arch/arm/boot/dts/exynos5420-chagallwifi.dts
 create mode 100644 arch/arm/boot/dts/exynos5420-galaxy-tab-common.dtsi

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