+#ifdef CONFIG_SYS_FSL_SINGLE_SOURCE_CLK
+ uint ddr_refclk_sel;
+ unsigned int porsr1_sys_clk;
+ porsr1_sys_clk = in_be32(&gur->porsr1) >> FSL_DCFG_PORSR1_SYSCLK_SHIFT
+ & FSL_DCFG_PORSR1_SYSCLK_MASK;
+ if (porsr1_sys_clk == FSL_DCFG_PORSR1_SYSCLK_DIFF)
+ sys_info->diff_sysclk = 1;
+ else
+ sys_info->diff_sysclk = 0;
+
+ /*
+ * DDR_REFCLK_SEL rcw bit is used to determine if DDR PLLS
+ * are driven by separate DDR Refclock or single source
+ * differential clock.
+ */
+ ddr_refclk_sel = (in_be32(&gur->rcwsr[5]) >>
+ FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_SHIFT) &
+ FSL_CORENET2_RCWSR5_DDR_REFCLK_SEL_MASK;
+ /*
+ * For single source clocking, both ddrclock and sysclock
+ * are driven by differential sysclock.
+ */
+ if (ddr_refclk_sel == FSL_CORENET2_RCWSR5_DDR_REFCLK_SINGLE_CLK)
+ sys_info->freq_ddrbus = CONFIG_SYS_CLK_FREQ;
+ else
+#endif