diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2018-07-13 09:26:28 +0300 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2018-07-19 11:49:55 +0300 |
| commit | 4a693669670fffd9a614c8c5c9f5ba027fd0185e (patch) | |
| tree | 1196bc82934666aae328518b95cb508ba3ed2dba /arch/microblaze/cpu | |
| parent | c7e794892489316c035e6a0c9e3753306f79d4c0 (diff) | |
| download | u-boot-4a693669670fffd9a614c8c5c9f5ba027fd0185e.tar.xz | |
microblaze: Convert generic platform to DM gpio
Converting GPIO to DM requires to do changes in reset subsystem
that's why support for Microblaze soft reset via sysreset and GPIO
sysreset support was added.
These two patches enables enabling GPIO DM.
Microblaze soft reset is bind at last reset method.
GPIO reset is handled via sysreset with adding this fragment to DT.
gpio-restart {
compatible = "gpio-restart";
gpios = <&reset_gpio 0 0 0>;
/* 3rd cell ACTIVE_HIGH = 0, ACTIVE_LOW = 1 */
};
hard-reset-gpio property is not documented and also handled.
Conversion is required.
Unfortunately do_reset is required for SPL that's why use only soft
microblaze reset for now.
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
Diffstat (limited to 'arch/microblaze/cpu')
| -rw-r--r-- | arch/microblaze/cpu/spl.c | 8 |
1 files changed, 8 insertions, 0 deletions
diff --git a/arch/microblaze/cpu/spl.c b/arch/microblaze/cpu/spl.c index d3c523d387..070c12cce9 100644 --- a/arch/microblaze/cpu/spl.c +++ b/arch/microblaze/cpu/spl.c @@ -47,3 +47,11 @@ int spl_start_uboot(void) return 1; } + +int do_reset(cmd_tbl_t *cmdtp, int flag, int argc, char * const argv[]) +{ + __asm__ __volatile__ ("mts rmsr, r0;" \ + "bra r0"); + + return 0; +} |