diff options
Diffstat (limited to 'arch/arm/boards/lxa-mc1/board.c')
-rw-r--r-- | arch/arm/boards/lxa-mc1/board.c | 69 |
1 files changed, 69 insertions, 0 deletions
diff --git a/arch/arm/boards/lxa-mc1/board.c b/arch/arm/boards/lxa-mc1/board.c new file mode 100644 index 0000000000..b377d4323e --- /dev/null +++ b/arch/arm/boards/lxa-mc1/board.c @@ -0,0 +1,69 @@ +// SPDX-License-Identifier: GPL-2.0+ +#include <common.h> +#include <linux/sizes.h> +#include <init.h> +#include <asm/memory.h> +#include <mach/stm32mp/bbu.h> +#include <bootsource.h> +#include <deep-probe.h> +#include <of.h> + +static int of_fixup_regulator_supply_disable(struct device_node *root, void *path) +{ + struct device_node *node; + struct property *prop; + + node = of_find_node_by_path_from(root, path); + if (!node) { + pr_warn("fixup for %s failed: not found\n", (const char *)path); + return -ENOENT; + } + + if (!of_property_read_bool(node, "regulator-always-on")) + return 0; + + prop = of_find_property(node, "vin-supply", NULL); + if (prop) + of_delete_property(prop); + + return 0; +} + +static int mc1_probe(struct device *dev) +{ + int flags; + + flags = bootsource_get_instance() == 0 ? BBU_HANDLER_FLAG_DEFAULT : 0; + stm32mp_bbu_mmc_register_handler("sd", "/dev/mmc0.ssbl", flags); + + flags = bootsource_get_instance() == 1 ? BBU_HANDLER_FLAG_DEFAULT : 0; + stm32mp_bbu_mmc_register_handler("emmc", "/dev/mmc1.ssbl", flags); + + + if (bootsource_get_instance() == 0) + of_device_enable_path("/chosen/environment-sd"); + else + of_device_enable_path("/chosen/environment-emmc"); + + barebox_set_hostname("lxa-mc1"); + + /* The regulator is powered by the PMIC, but is always on as far as + * software is concerned. Break the reference to the PMIC, so the OS + * doesn't need to defer SDMMC/Ethernet peripherals till after the PMIC + * is up. + */ + return of_register_fixup(of_fixup_regulator_supply_disable, "/regulator_3v3"); +} + +static const struct of_device_id mc1_of_match[] = { + { .compatible = "lxa,stm32mp157c-mc1" }, + { /* sentinel */ }, +}; +BAREBOX_DEEP_PROBE_ENABLE(mc1_of_match); + +static struct driver mc1_board_driver = { + .name = "board-lxa-mc1", + .probe = mc1_probe, + .of_compatible = mc1_of_match, +}; +device_platform_driver(mc1_board_driver); |