diff options
Diffstat (limited to 'drivers/tty')
| -rw-r--r-- | drivers/tty/serial/8250/8250_dw.c | 15 | ||||
| -rw-r--r-- | drivers/tty/serial/Kconfig | 2 | ||||
| -rw-r--r-- | drivers/tty/serial/pch_uart.c | 5 |
3 files changed, 16 insertions, 6 deletions
diff --git a/drivers/tty/serial/8250/8250_dw.c b/drivers/tty/serial/8250/8250_dw.c index 5e4b80ecb883..459d726f9d59 100644 --- a/drivers/tty/serial/8250/8250_dw.c +++ b/drivers/tty/serial/8250/8250_dw.c @@ -298,12 +298,17 @@ static void dw8250_quirks(struct uart_port *p, struct dw8250_data *data) p->serial_out = dw8250_serial_out32be; } } else if (has_acpi_companion(p->dev)) { - p->iotype = UPIO_MEM32; - p->regshift = 2; - p->serial_in = dw8250_serial_in32; + const struct acpi_device_id *id; + + id = acpi_match_device(p->dev->driver->acpi_match_table, + p->dev); + if (id && !strcmp(id->id, "APMC0D08")) { + p->iotype = UPIO_MEM32; + p->regshift = 2; + p->serial_in = dw8250_serial_in32; + data->uart_16550_compatible = true; + } p->set_termios = dw8250_set_termios; - /* So far none of there implement the Busy Functionality */ - data->uart_16550_compatible = true; } /* Platforms with iDMA */ diff --git a/drivers/tty/serial/Kconfig b/drivers/tty/serial/Kconfig index 518db24a5b36..c7831407a882 100644 --- a/drivers/tty/serial/Kconfig +++ b/drivers/tty/serial/Kconfig @@ -1380,7 +1380,7 @@ config SERIAL_IFX6X60 config SERIAL_PCH_UART tristate "Intel EG20T PCH/LAPIS Semicon IOH(ML7213/ML7223/ML7831) UART" - depends on PCI && (X86_32 || COMPILE_TEST) + depends on PCI && (X86_32 || MIPS || COMPILE_TEST) select SERIAL_CORE help This driver is for PCH(Platform controller Hub) UART of Intel EG20T diff --git a/drivers/tty/serial/pch_uart.c b/drivers/tty/serial/pch_uart.c index b5874d1e26b6..d391650b82e7 100644 --- a/drivers/tty/serial/pch_uart.c +++ b/drivers/tty/serial/pch_uart.c @@ -31,6 +31,7 @@ #include <linux/dmi.h> #include <linux/nmi.h> #include <linux/delay.h> +#include <linux/of.h> #include <linux/debugfs.h> #include <linux/dmaengine.h> @@ -1826,6 +1827,10 @@ static struct eg20t_port *pch_uart_init_port(struct pci_dev *pdev, priv->trigger_level = 1; priv->fcr = 0; + if (pdev->dev.of_node) + of_property_read_u32(pdev->dev.of_node, "clock-frequency" + , &user_uartclk); + #ifdef CONFIG_SERIAL_PCH_UART_CONSOLE pch_uart_ports[board->line_no] = priv; #endif |