ARM: dts: Add SPI nodes to rk3288
This adds basic SPI nodes to the base rk3288 device tree file.
A few notes:
* It's assumed that most users of the SPI ports are using chip select
0. Thus the default pinctrl for the ports enables chip select 0
(but not chip select 1 on ports that have it). If a board wants to
use chip select 1 or wants a GPIO chip select the board should
override the pinctrl (just like boards can override UART pinctrl if
they have hardware flow control).
* Since SPI DMA support appears broken and the SPI works fine without
DMA we don't include the DMA references. That can come in a later
change.
Signed-off-by: huang lin <hl@rock-chips.com>
Signed-off-by: Doug Anderson <dianders@chromium.org>
Signed-off-by: Heiko Stuebner <heiko@sntech.de>
1 file changed