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bsp/imx: Add UART baud change

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Update #3090.
This commit is contained in:
Sebastian Huber
2017-11-08 08:42:33 +01:00
parent 336fe3b9fd
commit fdf0e55cf9
1 changed files with 19 additions and 0 deletions
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19
c/src/lib/libbsp/arm/imx/console/console-config.c
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@@ -23,6 +23,7 @@
#include <bsp/fdt.h>
#include <bsp/irq.h>
#include <arm/freescale/imx/imx_ccmvar.h>
#include <arm/freescale/imx/imx_uartreg.h>
#include <libfdt.h>
@@ -192,6 +193,24 @@ static bool imx_uart_set_attributes(
const struct termios *term
)
{
imx_uart_context *ctx;
volatile imx_uart *regs;
uint32_t ufcr;
uint32_t baud;
ctx = (imx_uart_context *) base;
regs = imx_uart_get_regs(&ctx->base);
baud = rtems_termios_baud_to_number(term->c_ospeed);
if (baud != 0) {
ufcr = regs->ufcr;
ufcr = IMX_UART_UFCR_RFDIV_SET(ufcr, 0x5);
regs->ufcr = ufcr;
regs->ubir = 15;
regs->ubmr = imx_ccm_uart_hz() / baud - 1;
}
return true;
}