motorhead/qemu
1
0
Fork 0
mirror of https://github.com/Motorhead1991/qemu.git synced 2025-08-03 07:43:54 -06:00
Code Issues Projects Releases Packages Wiki Activity Actions

hw/char/cadence_uart: add clock support

Browse source 
Switch the cadence uart to multi-phase reset and add the
reference clock input.

The input clock frequency is added to the migration structure.

The reference clock controls the baudrate generation. If it disabled,
any input characters and events are ignored.

If this clock remains unconnected, the uart behaves as before
(it default to a 50MHz ref clock).

Signed-off-by: Damien Hedde <damien.hedde@greensocs.com>
Reviewed-by: Edgar E. Iglesias <edgar.iglesias@xilinx.com>
Reviewed-by: Alistair Francis <alistair.francis@wdc.com>
Message-id: 20200406135251.157596-8-damien.hedde@greensocs.com
Signed-off-by: Peter Maydell <peter.maydell@linaro.org>
This commit is contained in:
Damien Hedde 2020-04-06 15:52:49 +02:00 • committed by Peter Maydell
parent 38867cb7ec
commit b636db306e
3 changed files with 67 additions and 10 deletions
Download patch file Download diff file Expand all files Collapse all files

1
include/hw/char/cadence_uart.h
View file

@ -49,6 +49,7 @@ typedef struct {
CharBackend chr;
qemu_irq irq;
QEMUTimer *fifo_trigger_handle;
Clock *refclk;
} CadenceUARTState;
static inline DeviceState *cadence_uart_create(hwaddr addr,