diff options
| author | Angelo Dureghello <angelo@sysam.it> | 2019-03-13 21:46:53 +0100 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-05-24 08:11:59 -0400 |
| commit | 196afe62d6b3e720295bbda046d260ccc6292a28 (patch) | |
| tree | e169db6609ab6add1b2c0f917cbc12ba733025da /arch/m68k/cpu/mcf5227x | |
| parent | cd3b0717ba9875b3978bdc0835ee82415d766f29 (diff) | |
m68k: add dspi chip-select support
Signed-off-by: Angelo Dureghello <angelo@sysam.it>
Changes for v5:
- new patch
Diffstat (limited to 'arch/m68k/cpu/mcf5227x')
| -rw-r--r-- | arch/m68k/cpu/mcf5227x/Makefile | 2 | ||||
| -rw-r--r-- | arch/m68k/cpu/mcf5227x/dspi.c | 43 | ||||
| -rw-r--r-- | arch/m68k/cpu/mcf5227x/start.S | 3 |
3 files changed, 46 insertions, 2 deletions
diff --git a/arch/m68k/cpu/mcf5227x/Makefile b/arch/m68k/cpu/mcf5227x/Makefile index ef43893c51..6a38c4838e 100644 --- a/arch/m68k/cpu/mcf5227x/Makefile +++ b/arch/m68k/cpu/mcf5227x/Makefile @@ -6,4 +6,4 @@ # ccflags-y += -DET_DEBUG extra-y = start.o -obj-y = cpu.o speed.o cpu_init.o interrupts.o +obj-y = cpu.o speed.o cpu_init.o interrupts.o dspi.o diff --git a/arch/m68k/cpu/mcf5227x/dspi.c b/arch/m68k/cpu/mcf5227x/dspi.c new file mode 100644 index 0000000000..8fc4da271e --- /dev/null +++ b/arch/m68k/cpu/mcf5227x/dspi.c @@ -0,0 +1,43 @@ +// SPDX-License-Identifier: GPL-2.0+ +/* + * (C) Copyright 2019 + * Angelo Dureghello <angleo@sysam.it> + * + * CPU specific dspi routines + */ + +#include <common.h> +#include <asm/immap.h> +#include <asm/io.h> + +#ifdef CONFIG_CF_DSPI +void dspi_chip_select(int cs) +{ + struct gpio *gpio = (struct gpio *)MMAP_GPIO; + + switch (cs) { + case 0: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_UNMASK); + setbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0); + break; + case 2: + clrbits_8(&gpio->par_timer, ~GPIO_PAR_TIMER_T2IN_UNMASK); + setbits_8(&gpio->par_timer, GPIO_PAR_TIMER_T2IN_DSPIPCS2); + break; + } +} + +void dspi_chip_unselect(int cs) +{ + struct gpio *gpio = (struct gpio *)MMAP_GPIO; + + switch (cs) { + case 0: + clrbits_8(&gpio->par_dspi, GPIO_PAR_DSPI_PCS0_PCS0); + break; + case 2: + clrbits_8(&gpio->par_timer, ~GPIO_PAR_TIMER_T2IN_UNMASK); + break; + } +} +#endif /* CONFIG_CF_DSPI */ diff --git a/arch/m68k/cpu/mcf5227x/start.S b/arch/m68k/cpu/mcf5227x/start.S index e1b6c35133..61f9c6859c 100644 --- a/arch/m68k/cpu/mcf5227x/start.S +++ b/arch/m68k/cpu/mcf5227x/start.S @@ -378,7 +378,8 @@ _start: clr.l %sp@- /* run low-level board init code (from flash) */ - bsr board_init_f + move.l #board_init_f, %a1 + jsr (%a1) /* board_init_f() does not return */ |