i.MX Processorsのトピックimx53 uart2 can tx data, but not rx data?

imx53 uart2 can tx data, but not rx data?

潘紫东 — Fri, 17 May 2013 01:21:25 GMT

follow is uart2 iomux and configuration:

in arch/arm/plat-mxc/include/mach/iomux-mx53.h

#define MX53_PAD_EIM_D26__UART2_TXD_MUX	(_MX53_PAD_EIM_D26__UART2_TXD_MUX \| MUX_PAD_CTRL(NO_PAD_CTRL))
#define MX53_PAD_EIM_D27__UART2_RXD_MUX	(_MX53_PAD_EIM_D27__UART2_RXD_MUX \| MUX_PAD_CTRL(NO_PAD_CTRL))

in arch/arm/mach-mx5/serial.h

/* UART 2 configuration */

#define UART2_UCR4_CTSTL -1

#define UART2_DMA_ENABLE 0

#define UART2_DMA_RXBUFSIZE 512

#define UART2_UFCR_RXTL 16

#define UART2_UFCR_TXTL 16

and i sure that EIM_D27 not be Pin mux to other function in kernel sourec.

and URAT1 UART3 UART4 UART5 is ok;but UART2 is not work normal.

潘紫东 — Fri, 17 May 2013 01:33:09 GMT

#define __MX53_PAD_EIM_D27__UART2_RXD_MUX IOMUX_PAD(0x490,0x148,2,0x880,1,0)

#define __MX53_PAD_EIM_D26__UART2_RXD_MUX IOMUX_PAD(0x48c,0x144,2,0x880,0,0)

weidong_sun — Fri, 17 May 2013 02:30:21 GMT

Hello,Pan,

Please paste all iomux pins(iomux structure) here , let me see .

weidong

潘紫东 — Fri, 17 May 2013 02:57:43 GMT

thank you ! I solved the problem.

weidong_sun — Fri, 17 May 2013 03:00:33 GMT

ok Pan,

good job !

weidong