diff options
| -rw-r--r-- | doc/device-tree-bindings/gpio/bcm2835-gpio.txt | 5 | ||||
| -rw-r--r-- | drivers/gpio/bcm2835_gpio.c | 24 |
2 files changed, 29 insertions, 0 deletions
diff --git a/doc/device-tree-bindings/gpio/bcm2835-gpio.txt b/doc/device-tree-bindings/gpio/bcm2835-gpio.txt new file mode 100644 index 0000000..21e0610 --- /dev/null +++ b/doc/device-tree-bindings/gpio/bcm2835-gpio.txt @@ -0,0 +1,5 @@ +* Broadcom BCM283x GPIO controller + +Required properties: +- compatible: must be "brcm,bcm2835-gpio" +- reg: exactly one register range with length 0xb4 diff --git a/drivers/gpio/bcm2835_gpio.c b/drivers/gpio/bcm2835_gpio.c index 8dd7a28..cd5480e 100644 --- a/drivers/gpio/bcm2835_gpio.c +++ b/drivers/gpio/bcm2835_gpio.c @@ -10,6 +10,7 @@ #include <errno.h> #include <asm/gpio.h> #include <asm/io.h> +#include <fdtdec.h> struct bcm2835_gpios { struct bcm2835_gpio_regs *reg; @@ -118,9 +119,32 @@ static int bcm2835_gpio_probe(struct udevice *dev) return 0; } +#if CONFIG_IS_ENABLED(OF_CONTROL) +static const struct udevice_id bcm2835_gpio_id[] = { + {.compatible = "brcm,bcm2835-gpio"}, + {} +}; + +static int bcm2835_gpio_ofdata_to_platdata(struct udevice *dev) +{ + struct bcm2835_gpio_platdata *plat = dev_get_platdata(dev); + fdt_addr_t addr; + + addr = dev_get_addr(dev); + if (addr == FDT_ADDR_T_NONE) + return -EINVAL; + + plat->base = addr; + return 0; +} +#endif + U_BOOT_DRIVER(gpio_bcm2835) = { .name = "gpio_bcm2835", .id = UCLASS_GPIO, + .of_match = of_match_ptr(bcm2835_gpio_id), + .ofdata_to_platdata = of_match_ptr(bcm2835_gpio_ofdata_to_platdata), + .platdata_auto_alloc_size = sizeof(struct bcm2835_gpio_platdata), .ops = &gpio_bcm2835_ops, .probe = bcm2835_gpio_probe, .flags = DM_FLAG_PRE_RELOC, |