MRVL_XSPI_CLK_DIV
if (FIELD_GET(MRVL_XSPI_CLK_DIV, clk_reg) != i) {
clk_reg = FIELD_PREP(MRVL_XSPI_CLK_DIV, i);
clk_reg &= ~MRVL_XSPI_CLK_DIV;
clk_reg |= FIELD_PREP(MRVL_XSPI_CLK_DIV, i);