From: Andrea Scian andrea.scian@dave.eu
Dear all,
I've written a simple driver for Zynq PS GPIO (currently we have in U-Boot only the Xilinx PL GPIO driver). Most of the code is taken from Linux kernel Zynq PS GPIO driver.
It has been tested (not intensively) on our Zynq7000 SOM running U-Boot 2014.07, however the patch refers to the latest master pulled a few minutes ago: 2015.04-rc4. It compiles correctly on with zynq_zc770_xm010_defconfig target (of course after manually adding the right CONFIG_ to include the driver!).
Feel free to comment the patch and, if useful, insert in next U-Boot release.
Best Regards,
Andrea Scian DAVE Embedded Systems
Andrea Scian (1): gpio: add Xilinx Zynq PS GPIO driver
arch/arm/include/asm/arch-zynq/gpio.h | 66 ++++++++++ drivers/gpio/Makefile | 1 + drivers/gpio/zynq_gpio.c | 220 +++++++++++++++++++++++++++++++++ 3 files changed, 287 insertions(+) create mode 100644 drivers/gpio/zynq_gpio.c