diff options
| -rw-r--r-- | sys/dev/fdt/amlpinctrl.c | 33 |
1 files changed, 31 insertions, 2 deletions
diff --git a/sys/dev/fdt/amlpinctrl.c b/sys/dev/fdt/amlpinctrl.c index 644177e7e9f..e4122e0d309 100644 --- a/sys/dev/fdt/amlpinctrl.c +++ b/sys/dev/fdt/amlpinctrl.c @@ -1,4 +1,4 @@ -/* $OpenBSD: amlpinctrl.c,v 1.6 2020/12/17 19:43:32 kettenis Exp $ */ +/* $OpenBSD: amlpinctrl.c,v 1.7 2020/12/17 21:52:09 kettenis Exp $ */ /* * Copyright (c) 2019 Mark Kettenis <kettenis@openbsd.org> * @@ -73,6 +73,7 @@ #define GPIOAO_0 0 #define GPIOAO_1 1 +#define GPIOAO_3 3 #define GPIOAO_5 5 #define GPIOE_0 12 #define GPIOE_1 13 @@ -321,9 +322,11 @@ struct amlpinctrl_softc { int amlpinctrl_match(struct device *, void *, void *); void amlpinctrl_attach(struct device *, struct device *, void *); +int amlpinctrl_activate(struct device *, int); struct cfattach amlpinctrl_ca = { - sizeof(struct amlpinctrl_softc), amlpinctrl_match, amlpinctrl_attach + sizeof(struct amlpinctrl_softc), amlpinctrl_match, amlpinctrl_attach, + NULL, amlpinctrl_activate }; struct cfdriver amlpinctrl_cd = { @@ -447,6 +450,32 @@ amlpinctrl_attach(struct device *parent, struct device *self, void *aux) gpio_controller_register(&sc->sc_gc); } +int +amlpinctrl_activate(struct device *self, int act) +{ + struct amlpinctrl_softc *sc = (struct amlpinctrl_softc *)self; + uint32_t ao_pin3[] = { GPIOAO_3, 0 }; + + switch (act) { + case DVACT_POWERDOWN: + /* + * Work around a hardware bug in the Odroid C4/HC4 + * boards where SD card boot fails if the + * TFLASH_VDD_EN pin isn't configured as an input. + * Since this is the default state it should be safe + * to configure this pin (pin 3 of the GPIOAO bank) on + * all boards. + */ + if (sc->sc_gpio_banks == aml_g12a_ao_gpio_banks) + amlpinctrl_config_pin(sc, ao_pin3, GPIO_CONFIG_INPUT); + break; + default: + break; + } + + return 0; +} + struct aml_gpio_bank * amlpinctrl_lookup_bank(struct amlpinctrl_softc *sc, uint32_t pin) { |