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