In enhanced spi mode, read or write will start by sending the cmd and address (if present). Signed-off-by: Sudip Mukherjee <sudip.mukherjee@xxxxxxxxxx> --- drivers/spi/spi-dw-core.c | 25 +++++++++++++++++++++++++ 1 file changed, 25 insertions(+) diff --git a/drivers/spi/spi-dw-core.c b/drivers/spi/spi-dw-core.c index 06169aa3f37bf..ecab0fbc847c7 100644 --- a/drivers/spi/spi-dw-core.c +++ b/drivers/spi/spi-dw-core.c @@ -832,6 +832,29 @@ static void dw_spi_init_enh_mem_buf(struct dw_spi *dws, const struct spi_mem_op } } +static void dw_spi_enh_write_cmd_addr(struct dw_spi *dws, const struct spi_mem_op *op) +{ + void *buf = dws->buf; + u32 txw; + + /* Send cmd as 32 bit value */ + if (buf) { + txw = *(u32 *)(buf); + dw_write_io_reg(dws, DW_SPI_DR, txw); + buf += dws->reg_io_width; + if (op->addr.nbytes) { + txw = *(u32 *)(buf); + dw_write_io_reg(dws, DW_SPI_DR, txw); + if (op->addr.nbytes > 4) { + /* address more than 32bit */ + buf += dws->reg_io_width; + txw = *(u32 *)(buf); + dw_write_io_reg(dws, DW_SPI_DR, txw); + } + } + } +} + static int dw_spi_exec_enh_mem_op(struct spi_mem *mem, const struct spi_mem_op *op) { struct spi_controller *ctlr = mem->spi->controller; @@ -886,6 +909,8 @@ static int dw_spi_exec_enh_mem_op(struct spi_mem *mem, const struct spi_mem_op * dw_spi_enable_chip(dws, 1); + dw_spi_enh_write_cmd_addr(dws, op); + return 0; } -- 2.30.2