[U-Boot] [PATCH v3 0/9] spi: Add Allwinner A31 SPI driver

[Jagan Teki <jagan@amarulasolutions.com>]

This series add support for Allwinner A31 SPI controller driver.

Fixed and improved conde when compared to previous series[1]

Changes for v3:
- update commit message for "poll rxfifo" patch
- change SPI_CS argument as SPI_CS(priv, cs)
- keep 'unsigned long' for register set, since using u16 encounter 
  type-casting issues with writel and readl calls
- change 'unsigned long' to u32 for register bits
- add detailed commit message for 'spi: sun4i: Add CLK support'
- use has_soft_reset and has_burst_ctl driver variant flags for 
  A31 specific changes
- add allwinner,sun6i-a31-spi compatible support
- add fifo_depth support for A31
- rename sun4i_spi to spi-sunxi.c
- update spi-sunxi.c Kconfig entry
Changes for v2:
- use fifo_sta instead ctl reg in readl_poll
- use ">=" instead of negotiation in readl_poll condition
- use SPI_REG, SPI_BIT, SPI_CS macro for code improvement
- use compatible check for A31 register enablement
- add allwinner,sun6i-a31-spi compatible
- exclude driver enable patches, since it has SPI kconfig dependencies.

[1] https://patchwork.ozlabs.org/cover/1041901/

Jagan Teki (9):
  spi: sun4i: Poll for rxfifo to be filled up
  clk: sunxi: Implement SPI clocks, resets
  spi: sun4i: Simplify reg writes using set/clrbits_le32
  spi: sun4i: Access registers and bits via enum offsets
  spi: sun4i: Support fifo_depth via drvdata
  spi: sun4i: Add CLK support
  spi: sun4: Add A31 spi controller support
  spi: sun4i: Driver cleanup
  spi: Rename sun4i_spi.c into spi-sunxi.c

 drivers/clk/sunxi/clk_a10.c              |  10 +
 drivers/clk/sunxi/clk_a10s.c             |   7 +
 drivers/clk/sunxi/clk_a23.c              |   7 +
 drivers/clk/sunxi/clk_a31.c              |  13 +
 drivers/clk/sunxi/clk_a64.c              |   7 +
 drivers/clk/sunxi/clk_a80.c              |  13 +
 drivers/clk/sunxi/clk_a83t.c             |   7 +
 drivers/clk/sunxi/clk_h3.c               |   7 +
 drivers/clk/sunxi/clk_h6.c               |   9 +
 drivers/clk/sunxi/clk_r40.c              |  13 +
 drivers/clk/sunxi/clk_v3s.c              |   4 +
 drivers/spi/Kconfig                      |  12 +-
 drivers/spi/Makefile                     |   2 +-
 drivers/spi/{sun4i_spi.c => spi-sunxi.c} | 445 ++++++++++++++++-------
 14 files changed, 416 insertions(+), 140 deletions(-)
 rename drivers/spi/{sun4i_spi.c => spi-sunxi.c} (50%)

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2.18.0.321.gffc6fa0e3