diff options
Diffstat (limited to 'board/cr50/board.c')
| -rw-r--r-- | board/cr50/board.c | 29 |
1 files changed, 6 insertions, 23 deletions
diff --git a/board/cr50/board.c b/board/cr50/board.c index 8efee242ab..d19d021787 100644 --- a/board/cr50/board.c +++ b/board/cr50/board.c @@ -934,40 +934,23 @@ void tpm_rst_deasserted(enum gpio_signal signal) void assert_sys_rst(void) { - /* - * We don't have a good (any?) way to easily look up the pinmux/gpio - * assignments in gpio.inc, so they're hard-coded in this routine. This - * assertion is just to ensure it hasn't changed. - */ - ASSERT(GREAD(PINMUX, GPIO0_GPIO4_SEL) == GC_PINMUX_DIOM0_SEL); - - /* Set SYS_RST_L_OUT as an output, connected to the pad */ - GWRITE(PINMUX, DIOM0_SEL, GC_PINMUX_GPIO0_GPIO4_SEL); - gpio_set_flags(GPIO_SYS_RST_L_OUT, GPIO_OUT_HIGH); - /* Assert it */ gpio_set_level(GPIO_SYS_RST_L_OUT, 0); } void deassert_sys_rst(void) { - ASSERT(GREAD(PINMUX, GPIO0_GPIO4_SEL) == GC_PINMUX_DIOM0_SEL); - - /* Deassert SYS_RST_L */ + /* Deassert it */ gpio_set_level(GPIO_SYS_RST_L_OUT, 1); - - /* Set SYS_RST_L_OUT as an input, disconnected from the pad */ - gpio_set_flags(GPIO_SYS_RST_L_OUT, GPIO_INPUT); - GWRITE(PINMUX, DIOM0_SEL, 0); } int is_sys_rst_asserted(void) { - return (GREAD(PINMUX, DIOM0_SEL) == GC_PINMUX_GPIO0_GPIO4_SEL) -#ifdef CONFIG_CMD_GPIO_EXTENDED - && (gpio_get_flags(GPIO_SYS_RST_L_OUT) & GPIO_OUTPUT) -#endif - && (gpio_get_level(GPIO_SYS_RST_L_OUT) == 0); + /* + * SYS_RST_L is pseudo open drain. It is only an output when it's + * asserted. + */ + return gpio_get_flags(GPIO_SYS_RST_L_OUT) & GPIO_OUTPUT; } /** |