On 23 May 2016 at 01:08, Mario Six <mario....@gdsys.cc> wrote: > > From: "mario....@gdsys.cc" <mario....@gdsys.cc> > > This patch adds a driver for the built-in GPIO controller of the MPC85XX > SoC (probably supporting other PowerQUICC III SoCs as well). > > Each GPIO bank is identified by its own entry in the device tree, i.e. > > gpio-controller@fc00 { > #gpio-cells = <2>; > compatible = "fsl,pq3-gpio"; > reg = <0xfc00 0x100> > } > > By default, each bank is assumed to have 32 GPIOs, but the ngpios > setting is honored, so the number of GPIOs for each bank in configurable > to match the actual GPIO count of the SoC (e.g. the 32/32/23 banks of > the P1022 SoC). > > The usual functions of GPIO drivers (setting input/output mode and output > value setting) are supported. > > The driver has been tested on MPC85XX, but it is likely that other > PowerQUICC III devices will work as well. > > Signed-off-by: Mario Six <mario....@gdsys.cc> > --- > > v4: > None > > v3: > - Added shadow for the GPDAT register, as suggested by Joakim Tjernlund > - Switched to u32 for bit masks > - Added some comments > > v2: > - Added missing commit message > - Improved the Kconfig description > - Fixed and documented the mpc85xx_gpio_data members > - Introduced GPIO_MASK macro to simplify the code > - Fixed white space issues in function headers > - Removed unnecessary empty line > - Use fdtdec_get_addr_size_auto_noparent to read the register base data > > --- > arch/powerpc/include/asm/arch-mpc85xx/gpio.h | 2 + > arch/powerpc/include/asm/immap_85xx.h | 2 + > drivers/gpio/Kconfig | 25 ++++ > drivers/gpio/Makefile | 1 + > drivers/gpio/mpc85xx_gpio.c | 187 > +++++++++++++++++++++++++++ > 5 files changed, 217 insertions(+) > create mode 100644 drivers/gpio/mpc85xx_gpio.c
Reviewed-by: Simon Glass <s...@chromium.org> _______________________________________________ U-Boot mailing list U-Boot@lists.denx.de http://lists.denx.de/mailman/listinfo/u-boot