driver/ddr: Add 256 byte interleaving support
Freescale LayerScape SoCs support controller interleaving on 256 byte size.
This interleaving is mandoratory.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/ddr/fsl/options.c b/drivers/ddr/fsl/options.c
index 4aafcce..b0cf046 100644
--- a/drivers/ddr/fsl/options.c
+++ b/drivers/ddr/fsl/options.c
@@ -818,21 +818,33 @@
* If memory controller interleaving is enabled, then the data
* bus widths must be programmed identically for all memory controllers.
*
- * XXX: Attempt to set all controllers to the same chip select
+ * Attempt to set all controllers to the same chip select
* interleaving mode. It will do a best effort to get the
* requested ranks interleaved together such that the result
* should be a subset of the requested configuration.
+ *
+ * if CONFIG_SYS_FSL_DDR_INTLV_256B is defined, mandatory interleaving
+ * with 256 Byte is enabled.
*/
#if (CONFIG_NUM_DDR_CONTROLLERS > 1)
if (!hwconfig_sub_f("fsl_ddr", "ctlr_intlv", buf))
+#ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
+ ;
+#else
goto done;
-
+#endif
if (pdimm[0].n_ranks == 0) {
printf("There is no rank on CS0 for controller %d.\n", ctrl_num);
popts->memctl_interleaving = 0;
goto done;
}
popts->memctl_interleaving = 1;
+#ifdef CONFIG_SYS_FSL_DDR_INTLV_256B
+ popts->memctl_interleaving_mode = FSL_DDR_256B_INTERLEAVING;
+ popts->memctl_interleaving = 1;
+ debug("256 Byte interleaving\n");
+ goto done;
+#endif
/*
* test null first. if CONFIG_HWCONFIG is not defined
* hwconfig_arg_cmp returns non-zero
@@ -1085,6 +1097,7 @@
"Memory controller interleaving disabled.\n");
} else {
switch (check_intlv) {
+ case FSL_DDR_256B_INTERLEAVING:
case FSL_DDR_CACHE_LINE_INTERLEAVING:
case FSL_DDR_PAGE_INTERLEAVING:
case FSL_DDR_BANK_INTERLEAVING: