Compared to the "old" driver:
- Each device must assign a pinctrl setting to the SPI node to allow the
new SPI driver to configure the SPI pins.
While here we are also using separate input and output settings so we
are independent of whether the bootloader configures the pins correctly.
- We use the new "compatible" strings to make the driver choose the
correct number of chip-selects for each SoC.
- The new driver starts counting the chip-selects at 1 (instead of 0, like
the old one did). Thus we have to adjust the devices accordingly.
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48293
These were introduced in upstream commit
be14811c03cf "pinctrl/lantiq: introduce new dedicated devicetree
bindings" and finally allow us to use the individual pins within our dts
(for example spi_clk, etc.).
Please note that this changes the number of GPIOs which are available for
some SoCs. VRX200 SoCs for example only have 50 pins, but previously 56
pins were exposed. This means that all places which are using hardcoded
GPIO numbers (which are not passed via device-tree) need to be adjusted
(because the first GPIO number is now 462, instead of 456).
Signed-off-by: Martin Blumenstingl <martin.blumenstingl@googlemail.com>
SVN-Revision: 48284
Felix Fietkau
John Crispin