diff options
| author | Michal Simek <michal.simek@xilinx.com> | 2019-12-03 15:02:50 +0100 |
|---|---|---|
| committer | Michal Simek <michal.simek@xilinx.com> | 2020-01-14 09:05:53 +0100 |
| commit | e82024def64569bd7cabb430b4cef9a4c102f2be (patch) | |
| tree | e9ff522f48ff611690df50af3457e2b776bd0311 | |
| parent | fc274a593217de8f8450274275528c29c7678064 (diff) | |
arm64: zynqmp: Do not assing MIO34 that early on zcu100
MIO34 is connected to POWER_KILL signal. When MIO configuration is done in
psu_init() and this pin is assigned to PMU but PMU configuration is not
loaded yet. PMU gpio output is high that means board is powered off
immediately.
The patch is fixing this sequence that MIO34 stays assing to ps gpio IP.
PMU config is loaded in SPL and then pin assigned to PMU through
psu_post_config_data().
Signed-off-by: Michal Simek <michal.simek@xilinx.com>
| -rw-r--r-- | arch/arm/mach-zynqmp/include/mach/psu_init_gpl.h | 1 | ||||
| -rw-r--r-- | arch/arm/mach-zynqmp/psu_spl_init.c | 9 | ||||
| -rw-r--r-- | arch/arm/mach-zynqmp/spl.c | 2 | ||||
| -rw-r--r-- | board/xilinx/zynqmp/zynqmp-zcu100-revC/psu_init_gpl.c | 7 |
4 files changed, 18 insertions, 1 deletions
diff --git a/arch/arm/mach-zynqmp/include/mach/psu_init_gpl.h b/arch/arm/mach-zynqmp/include/mach/psu_init_gpl.h index 15e54c04938..e37acda2f89 100644 --- a/arch/arm/mach-zynqmp/include/mach/psu_init_gpl.h +++ b/arch/arm/mach-zynqmp/include/mach/psu_init_gpl.h @@ -21,5 +21,6 @@ void prog_reg(unsigned long addr, unsigned long mask, unsigned long shift, unsigned long value); int psu_init(void); +unsigned long psu_post_config_data(void); #endif /* _PSU_INIT_GPL_H_ */ diff --git a/arch/arm/mach-zynqmp/psu_spl_init.c b/arch/arm/mach-zynqmp/psu_spl_init.c index b357de32358..b6abdfd608e 100644 --- a/arch/arm/mach-zynqmp/psu_spl_init.c +++ b/arch/arm/mach-zynqmp/psu_spl_init.c @@ -77,3 +77,12 @@ __weak int psu_init(void) */ return -1; } + +__weak unsigned long psu_post_config_data(void) +{ + /* + * This function is overridden by the one in + * board/xilinx/zynqmp/(platform)/psu_init_gpl.c, if it exists. + */ + return 0; +} diff --git a/arch/arm/mach-zynqmp/spl.c b/arch/arm/mach-zynqmp/spl.c index a2079535a58..527646875a9 100644 --- a/arch/arm/mach-zynqmp/spl.c +++ b/arch/arm/mach-zynqmp/spl.c @@ -13,6 +13,7 @@ #include <asm/io.h> #include <asm/spl.h> #include <asm/arch/hardware.h> +#include <asm/arch/psu_init_gpl.h> #include <asm/arch/sys_proto.h> void board_init_f(ulong dummy) @@ -53,6 +54,7 @@ void spl_board_init(void) preloader_console_init(); ps_mode_reset(MODE_RESET); board_init(); + psu_post_config_data(); } #endif diff --git a/board/xilinx/zynqmp/zynqmp-zcu100-revC/psu_init_gpl.c b/board/xilinx/zynqmp/zynqmp-zcu100-revC/psu_init_gpl.c index e1fdabaeb9d..585b3afc218 100644 --- a/board/xilinx/zynqmp/zynqmp-zcu100-revC/psu_init_gpl.c +++ b/board/xilinx/zynqmp/zynqmp-zcu100-revC/psu_init_gpl.c @@ -409,7 +409,6 @@ static unsigned long psu_mio_init_data(void) psu_mask_write(0xFF18007C, 0x000000FEU, 0x00000000U); psu_mask_write(0xFF180080, 0x000000FEU, 0x00000008U); psu_mask_write(0xFF180084, 0x000000FEU, 0x00000008U); - psu_mask_write(0xFF180088, 0x000000FEU, 0x00000008U); psu_mask_write(0xFF18008C, 0x000000FEU, 0x00000000U); psu_mask_write(0xFF180090, 0x000000FEU, 0x00000000U); psu_mask_write(0xFF180094, 0x000000FEU, 0x00000000U); @@ -990,3 +989,9 @@ int psu_init(void) return 1; return 0; } + +unsigned long psu_post_config_data(void) +{ + psu_mask_write(0xFF180088, 0x000000FEU, 0x00000008U); + return 0; +} |