In many cases SPL only uses a single serial port and there is no need for alias sequence support. We will just use the serial port pointed to by stdout-path in the /chosen node.
Signed-off-by: Simon Glass sjg@chromium.org ---
drivers/core/Kconfig | 9 +++++++++ drivers/core/device.c | 28 +++++++++++++++------------- include/config_uncmd_spl.h | 1 + 3 files changed, 25 insertions(+), 13 deletions(-)
diff --git a/drivers/core/Kconfig b/drivers/core/Kconfig index 75d182d..2861b43 100644 --- a/drivers/core/Kconfig +++ b/drivers/core/Kconfig @@ -46,3 +46,12 @@ config DM_STDIO Normally serial drivers register with stdio so that they can be used as normal output devices. In SPL we don't normally use stdio, so we can omit this feature. + +config DM_SEQ_ALIAS + bool "Support numbered aliases in device tree" + depends on DM + default y + help + Most boards will have a '/aliases' node containing the path to + numbered devices (e.g. serial0 = &serial0). This feature can be + disabled if it is not required, to save code space in SPL. diff --git a/drivers/core/device.c b/drivers/core/device.c index 73c3e07..78c9525 100644 --- a/drivers/core/device.c +++ b/drivers/core/device.c @@ -55,21 +55,23 @@ int device_bind(struct udevice *parent, struct driver *drv, const char *name,
dev->seq = -1; dev->req_seq = -1; -#ifdef CONFIG_OF_CONTROL - /* - * Some devices, such as a SPI bus, I2C bus and serial ports are - * numbered using aliases. - * - * This is just a 'requested' sequence, and will be - * resolved (and ->seq updated) when the device is probed. - */ - if (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS) { - if (uc->uc_drv->name && of_offset != -1) { - fdtdec_get_alias_seq(gd->fdt_blob, uc->uc_drv->name, - of_offset, &dev->req_seq); + if (IS_ENABLED(CONFIG_OF_CONTROL) && IS_ENABLED(CONFIG_DM_SEQ_ALIAS)) { + /* + * Some devices, such as a SPI bus, I2C bus and serial ports + * are numbered using aliases. + * + * This is just a 'requested' sequence, and will be + * resolved (and ->seq updated) when the device is probed. + */ + if (uc->uc_drv->flags & DM_UC_FLAG_SEQ_ALIAS) { + if (uc->uc_drv->name && of_offset != -1) { + fdtdec_get_alias_seq(gd->fdt_blob, + uc->uc_drv->name, of_offset, + &dev->req_seq); + } } } -#endif + if (!dev->platdata && drv->platdata_auto_alloc_size) { dev->flags |= DM_FLAG_ALLOC_PDATA; dev->platdata = calloc(1, drv->platdata_auto_alloc_size); diff --git a/include/config_uncmd_spl.h b/include/config_uncmd_spl.h index a9106f4..38cb0e8 100644 --- a/include/config_uncmd_spl.h +++ b/include/config_uncmd_spl.h @@ -31,6 +31,7 @@
#undef CONFIG_DM_WARN #undef CONFIG_DM_DEVICE_REMOVE +#undef CONFIG_DM_SEQ_ALIAS #undef CONFIG_DM_STDIO
#endif /* CONFIG_SPL_BUILD */