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dm: gpio: MPC85XX GPIO platform data support

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Define a platform data structure for the MPC85XX GPIO driver to allow
use of the driver without device tree. Users should define the GPIO
blocks for their platform like this:
  struct mpc85xx_gpio_plat gpio_blocks[] = {
         {
                 .addr = 0x130000,
                 .ngpios = 32,
         },
         {
                 .addr = 0x131000,
                 .ngpios = 32,
         },
  };

  U_BOOT_DEVICES(my_platform_gpios) = {
         { "gpio_mpc85xx", &gpio_blocks[0] },
         { "gpio_mpc85xx", &gpio_blocks[1] },
  };

This is intended to build upon the recent submission of the base
MPC85XX driver from Mario Six. We need to use that new driver
without dts support and this patch gives us that flexibility.
This has been tested on a Freescale T2080 CPU, although only the first
GPIO block.

Signed-off-by: Hamish Martin <hamish.martin@alliedtelesis.co.nz>
Reviewed-by: Mario Six <mario.six@gdsys.cc>
Tested-by: Mario Six <mario.six@gdsys.cc>
Acked-by: Simon Glass <sjg@chromium.org>
This commit is contained in:
Hamish Martin
2016-06-14 10:17:05 +12:00
committed by Simon Glass
parent 797d1b9de1
commit 4b689f02ff
2 changed files with 36 additions and 7 deletions
Download Patch File Download Diff File Expand all files Collapse all files

6
arch/powerpc/include/asm/arch-mpc85xx/gpio.h
View File

@@ -18,4 +18,10 @@
#include <asm/mpc85xx_gpio.h>
#endif
struct mpc85xx_gpio_plat {
ulong addr;
unsigned long size;
uint ngpios;
};
#endif