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authorYork Sun <yorksun@freescale.com>2014-02-10 13:59:44 -0800
committerTom Rini <trini@ti.com>2014-02-21 11:06:13 -0500
commit6b1e1254f326940e5b65c7029f71b964bdf28fd4 (patch)
treea8e596b2d01fe4a952e253b9b42972b040a4a165 /drivers/ddr/fsl
parent6b9e309a8a7f0f33252288f0ed8794a83a488301 (diff)
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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>
Diffstat (limited to 'drivers/ddr/fsl')
-rw-r--r--drivers/ddr/fsl/ctrl_regs.c1
-rw-r--r--drivers/ddr/fsl/main.c1
-rw-r--r--drivers/ddr/fsl/options.c17
-rw-r--r--drivers/ddr/fsl/util.c3
4 files changed, 20 insertions, 2 deletions
diff --git a/drivers/ddr/fsl/ctrl_regs.c b/drivers/ddr/fsl/ctrl_regs.c
index 5acbc73..0882932 100644
--- a/drivers/ddr/fsl/ctrl_regs.c
+++ b/drivers/ddr/fsl/ctrl_regs.c
@@ -145,6 +145,7 @@ static void set_csn_config(int dimm_number, int i, fsl_ddr_cfg_regs_t *ddr,
if (!popts->memctl_interleaving)
break;
switch (popts->memctl_interleaving_mode) {
+ case FSL_DDR_256B_INTERLEAVING:
case FSL_DDR_CACHE_LINE_INTERLEAVING:
case FSL_DDR_PAGE_INTERLEAVING:
case FSL_DDR_BANK_INTERLEAVING:
diff --git a/drivers/ddr/fsl/main.c b/drivers/ddr/fsl/main.c
index dee50a0..d62ca63 100644
--- a/drivers/ddr/fsl/main.c
+++ b/drivers/ddr/fsl/main.c
@@ -291,6 +291,7 @@ static unsigned long long __step_assign_addresses(fsl_ddr_info_t *pinfo,
for (i = 0; i < CONFIG_NUM_DDR_CONTROLLERS; i++) {
if (pinfo->memctl_opts[i].memctl_interleaving) {
switch (pinfo->memctl_opts[i].memctl_interleaving_mode) {
+ case FSL_DDR_256B_INTERLEAVING:
case FSL_DDR_CACHE_LINE_INTERLEAVING:
case FSL_DDR_PAGE_INTERLEAVING:
case FSL_DDR_BANK_INTERLEAVING:
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 @@ unsigned int populate_memctl_options(int all_dimms_registered,
* 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 @@ void check_interleaving_options(fsl_ddr_info_t *pinfo)
"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:
diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c
index 450a488..ad53658 100644
--- a/drivers/ddr/fsl/util.c
+++ b/drivers/ddr/fsl/util.c
@@ -228,6 +228,9 @@ void board_add_ram_info(int use_default)
puts(" DDR Controller Interleaving Mode: ");
switch ((cs0_config >> 24) & 0xf) {
+ case FSL_DDR_256B_INTERLEAVING:
+ puts("256B");
+ break;
case FSL_DDR_CACHE_LINE_INTERLEAVING:
puts("cache line");
break;