hi,
We have a custom design that utilizes uart5 to a z-wave module and the uart does not receive or transmit any data.
the hardware connection is on
IO-Mux
#define MX6DL_PAD_CSI0_DAT14__UART5_TXD \
IOMUX_PAD(0x0370, 0x005C, 3, 0x0000, 0, MX6DL_UART_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT14__UART5_RXD \
IOMUX_PAD(0x0370, 0x005C, 3, 0x091C, 0, MX6DL_UART_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT14__SDMA_DEBUG_PC_8 \
IOMUX_PAD(0x0370, 0x005C, 4, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT14__GPIO_6_0 \
IOMUX_PAD(0x0370, 0x005C, 5, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT14__MMDC_MMDC_DEBUG_37 \
IOMUX_PAD(0x0370, 0x005C, 6, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT14__SIMBA_TRACE_11 \
IOMUX_PAD(0x0370, 0x005C, 7, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT15__IPU1_CSI0_D_15 \
IOMUX_PAD(0x0374, 0x0060, 0, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT15__WEIM_WEIM_D_11 \
IOMUX_PAD(0x0374, 0x0060, 1, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT15__PCIE_CTRL_DIAG_STATUS_BUS_MUX_19 \
IOMUX_PAD(0x0374, 0x0060, 2, 0x0000, 0, NO_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT15__UART5_TXD \
IOMUX_PAD(0x0374, 0x0060, 3, 0x0000, 0, MX6DL_UART_PAD_CTRL)
#define MX6DL_PAD_CSI0_DAT15__UART5_RXD \
IOMUX_PAD(0x0374, 0x0060, 3, 0x091C, 1, MX6DL_UART_PAD_CTRL)
board-mx6 uart config
static iomux_v3_cfg_t mx6dl_uart5_pads[] = {
MX6DL_PAD_CSI0_DAT15__UART5_RXD,
MX6DL_PAD_CSI0_DAT14__UART5_TXD,
};
static const struct imxuart_platform_data mx6q_sd_uart5_data __initconst = {
.flags = IMXUART_HAVE_RTSCTS | IMXUART_USE_DCEDTE | IMXUART_SDMA,
.dma_req_rx = MX6Q_DMA_REQ_UART5_RX,
.dma_req_tx = MX6Q_DMA_REQ_UART5_TX,
};
mxc_iomux_v3_setup_multiple_pads(mx6dl_uart5_pads,
ARRAY_SIZE(mx6dl_uart5_pads));
imx6q_add_imx_uart(4, &mx6q_sd_uart5_data);
Any idea on what could be the problem?
