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
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