diff options
Diffstat (limited to 'drivers/serial/Kconfig')
| -rw-r--r-- | drivers/serial/Kconfig | 54 |
1 files changed, 46 insertions, 8 deletions
diff --git a/drivers/serial/Kconfig b/drivers/serial/Kconfig index de02e08a299..4978a65715b 100644 --- a/drivers/serial/Kconfig +++ b/drivers/serial/Kconfig @@ -720,6 +720,17 @@ config PIC32_SERIAL help Support for the UART found on Microchip PIC32 SoC's. +config SYS_NS16550_SERIAL + bool "NS16550 UART or compatible legacy driver" + depends on !DM_SERIAL + select SYS_NS16550 + +config SPL_SYS_NS16550_SERIAL + bool "NS16550 UART or compatible legacy driver in SPL" + depends on SPL && !SPL_DM_SERIAL + default y if SYS_NS16550_SERIAL || ARCH_SUNXI || ARCH_OMAP2PLUS + select SYS_NS16550 + config SYS_NS16550 bool "NS16550 UART or compatible" help @@ -732,25 +743,52 @@ config SYS_NS16550 config NS16550_DYNAMIC bool "Allow NS16550 to be configured at runtime" + depends on SYS_NS16550 default y if SYS_COREBOOT || SYS_SLIMBOOTLOADER help Enable this option to allow device-tree control of the driver. Normally this driver is controlled by the following options: - CONFIG_SYS_NS16550_PORT_MAPPED - indicates that port I/O is used for - access. If not enabled, then the UART is memory-mapped. - CONFIG_SYS_NS16550_MEM32 - if memory-mapped, indicates that 32-bit - access should be used (instead of 8-bit) - CONFIG_SYS_NS16550_REG_SIZE - indicates register width and also - endianness. If positive, big-endian access is used. If negative, - little-endian is used. - It is not a good practice for a driver to be statically configured, since it prevents the same driver being used for different types of UARTs in a system. This option avoids this problem at the cost of a slightly increased code size. +config SYS_NS16550_MEM32 + bool "If memory-mapped, 32bit access is needed for ns16550 register access" + depends on SYS_NS16550 + help + If enabled, if memory-mapped, indicates that 32-bit access should be + used (instead of 8-bit) for register access. + +config SYS_NS16550_PORT_MAPPED + bool "Port I/O is used for ns16550 register access" + depends on SYS_NS16550 + help + If enabled, port I/O is used for ns16550 register access. If not + enabled, then the UART is memory-mapped. + +config SYS_NS16550_REG_SIZE + int "ns16550 register width and endianness" + depends on SYS_NS16550_SERIAL || SPL_SYS_NS16550_SERIAL + range -4 4 + default -4 if ARCH_OMAP2PLUS || ARCH_SUNXI + default 1 + help + Indicates register width and also endianness. If positive, big-endian + access is used. If negative, little-endian is used. + +config SPL_NS16550_MIN_FUNCTIONS + bool "Only provide NS16550_init and NS16550_putc in SPL" + depends on SPL_SYS_NS16550_SERIAL && PPC + help + Enable this if you desire to only have use of the NS16550_init and + NS16550_putc functions for the serial driver located at + drivers/serial/ns16550.c. This option is useful for saving space for + already greatly restricted images, including but not limited to + NAND_SPL configurations. + config INTEL_MID_SERIAL bool "Intel MID platform UART support" depends on DM_SERIAL && OF_CONTROL |