[PATCH 0/3 v6] spi: s3c64xx: use "cs-gpios" in spi node instead of "cs-gpio"

[Naveen Krishna Chatradhi]

Currently, spi-s3c64xx.c needs "cs-gpio" chip select GPIO to be
defined under "controller-data" node under each slave node.

&spi_x {
        cs-gpios <>;
        ...
        slave_node {

                controller-data {
                        cs-gpio = <>;
                        ...
                };
                ...
        };
        ...
};

Where as, SPI core and many other drivers uses "cs-gpios" for
from device tree node.

Hence, make changes in spi-s3c64xx.c driver to make use of
"cs-gpios" from SPI node(parent) instead of "cs-gpio" defined in
slaves "controller-data"(child) node.

Also, fixes a compilation warning and corrects the DTS nodes for
Exynos4210 based SMDKv310, Exynos4412 based Trats2, Exynos5250 based
SMDK5250 boards.

Changes since v5:
1. Fixed the "making a GPIO chip select mandatory" bug.

Naveen Krishna Chatradhi (3):
  spi: s3c64xx: fix broken "cs_gpios" usage in the driver
  spi: s3c64xx: for DT platofrms always get the chipselect info from DT
    node
  ARM: DTS: fix the chip select gpios definition in the SPI nodes

 .../devicetree/bindings/spi/spi-samsung.txt        |    8 ++--
 arch/arm/boot/dts/exynos4210-smdkv310.dts          |    2 +-
 arch/arm/boot/dts/exynos4412-trats2.dts            |    2 +-
 arch/arm/boot/dts/exynos5250-smdk5250.dts          |    2 +-
 drivers/spi/spi-s3c64xx.c                          |   41 ++++++++------------
 5 files changed, 22 insertions(+), 33 deletions(-)

-- 
1.7.9.5