[U-Boot] [PATCH v3 0/7] rockchip: spl: rk3399: prepare to have SPI config per-board

[Philipp Tomsich]

To support SPI flashes (via the device model) and enable loading of
later-stage images from SPI in SPL, we need a few adjustments to the
common configuration header for the RK3399:
 - enable SPL_SPI_LOAD if SPI is enabled for SPL (in rk3399_common)
 - move CONFIG_SPI and CONFIG_SPI_FLASH (from rk3399_common) to defconfig

Changes in v3:
- replaced macro-pasting with a lookup table to improve readability
  (as requested by Simon)
- increase the module input clock from 99MHz to 198MHz for the RK3399
  (added in version 3)
- change the top bitrate permissible (without generating a -EINVAL)
  from 48MHz/MBit to half the input clockrate (i.e. 49.5MHz/MBit for
  a 99MHz module input clock)

Changes in v2:
- fixes a wrong macro usage, which caused the SPI module input clock
  frequency to be significantly higher than intended
- frequencies have now been validated using an oscilloscope (keep in mind
  that all frequencies are derived from a 99MHz module input clock) at the
  following measurement points (assuming the other fix for the usage of
  DIV_RATE from the series):
    *  1 MHz ...  0.99 MHz
    *  5 MHz ...  4.95 MHz
    * 10 MHz ...  9.9  MHz
    * 30 MHz ... 33    MHz
    * 50 MHz ... 49.5  MHz
- fixes an off-by-one for the RK3399 that cause the SPI module input
  clock to be misstated as 84MHz (even though it was running at 99MHz)

Jakob Unterwurzacher (1):
  rockchip: spi: enable support for the rk_spi driver for the RK3399

Philipp Tomsich (6):
  rockchip: clk: rk3399: add clock support for SCLK_SPI1 and SCLK_SPI5
  rockchip: clk: rk3399: fix off-by one during rate calculation in
    i2c/spi_set_rate
  rockchip: spi: rk_spi: select 198MHz input to the SPI module for the
    RK3399
  rockchip: spi: rk_spi: improve clocking code for the RK3399
  rockchip: pinctrl: rk3399: add support for the SPI5 controller
  rockchip: spl: rk3399: spi: enable SPL_SPI_LOAD if SPI is enabled for
    SPL

 arch/arm/include/asm/arch-rockchip/grf_rk3399.h |  12 +++
 arch/arm/include/asm/arch-rockchip/periph.h     |   3 +
 drivers/clk/rockchip/clk_rk3399.c               | 115 ++++++++++++++++++++++--
 drivers/pinctrl/rockchip/pinctrl_rk3399.c       |  17 ++++
 drivers/spi/rk_spi.c                            |  17 +++-
 drivers/spi/rk_spi.h                            |   7 ++
 include/configs/rk3399_common.h                 |   3 +
 7 files changed, 163 insertions(+), 11 deletions(-)

-- 
1.9.1