ARM: S3C2412: SoC has the fractional baud rate register
Subsystems (3)
PATCH 1/2 ARM: S3C2412: SoC has the fractional baud rate register
The S3C2412 has a fractional baud rate register, this patch adds the corresponding flag to the UART definition to allow generation of more precise baud rates for the various clock combinations.
Signed-off-by Michel Pollet <[email protected]>
--- drivers/serial/s3c2412.c | 1 + 1 files changed, 1 insertions(+), 0 deletions(-)
drivers/serial/s3c2412.c +1 -0
@@ -102,6 +102,7 @@ static struct s3c24xx_uart_info s3c2412_uart_inf = { .name = "Samsung S3C2412 UART", .type = PORT_S3C2412, .fifosize = 64, + .has_divslot = 1, .rx_fifomask = S3C2440_UFSTAT_RXMASK, .rx_fifoshift = S3C2440_UFSTAT_RXSHIFT, .rx_fifofull = S3C2440_UFSTAT_RXFULL,
Signature · 1 line
1.6.6
PATCH 2/2 ARM: S3C: Configuration override for UART names
S3C UART devices are named s3c2410_serialX and it is inconsistent with the kernel at boot time (console=ttySACx) This patch allows the config file to override this and use the standard name instead.
Signed-off-by Michel Pollet <[email protected]>
--- arch/arm/plat-s3c/Kconfig | 9 +++++++++ drivers/serial/samsung.c | 9 ++++++++- 2 files changed, 17 insertions(+), 1 deletions(-)
arch/arm/plat-s3c/Kconfig +9 -0
@@ -113,6 +113,15 @@ config S3C_LOWLEVEL_UART_PORT this configuration should be between zero and two. The port must have been initialised by the boot-loader before use. +config S3C_STD_UART_NAMES + bool "Name S3C UART device files as ttySACx" + default n + help + The kernel and most other SoC use the ttySACx naming scheme + for UART device file naming. The default for S3C is to use + s3c2410_serialX, and it confuses a lot of distros; it is also + inconsistent with the console= kernel parameter. + # options for gpiolib support config S3C_GPIO_SPACE
drivers/serial/samsung.c +8 -1
@@ -55,7 +55,14 @@/* UART name and device definitions */ +#ifdef CONFIG_S3C_STD_UART_NAMES +/* All other SoC use this naming sheme, +including the kernel earlier at boot time */ #define S3C24XX_SERIAL_NAME "ttySAC" +#else +/* Legacy option */ +#define S3C24XX_SERIAL_NAME "s3c2410_serial" +#endif #define S3C24XX_SERIAL_MAJOR 204#define S3C24XX_SERIAL_MINOR 64
@@ -878,7 +885,7 @@ static struct uart_ops s3c24xx_serial_ops = {static struct uart_driver s3c24xx_uart_drv = { .owner =THIS_MODULE , - .dev_name ="s3c2410_serial" , + .dev_name =S3C24XX_SERIAL_NAME , .nr =CONFIG_SERIAL_SAMSUNG_UARTS , .cons =S3C24XX_SERIAL_CONSOLE , .driver_name =S3C24XX_SERIAL_NAME ,
Signature · 1 line
1.6.6
PATCH 2/2 ARM: S3C: Configuration override for UART names
arch/arm/plat-s3c/Kconfig config S3C_LOWLEVEL_UART_PORT · line 118
Quoted 11 lines · Michel Pollet
arch/arm/plat-s3c/Kconfig +3
-0@@ -113,6 +113,15 @@ config S3C_LOWLEVEL_UART_PORT this configuration should be between zero and two. The port must have been initialised by the boot-loader before use. +config S3C_STD_UART_NAMES + bool "Name S3C UART device files as ttySACx" + default n
default n is the default default. There's no need to explicitly specify a default default.