drivers/ddr/fsl: Update DDR driver for DDR4
Add/update registers for DDR4, including DQ mappings. Allow raw timing
method used for all controllers. Update mode_9 register to 0x500 for
improved stability. Check DDR controller version number individually
in case a SoC has multiple DDR controllers of different versions.
Increase read-write turnaround for DDR4 high speeds.
Signed-off-by: York Sun <yorksun@freescale.com>
diff --git a/drivers/ddr/fsl/util.c b/drivers/ddr/fsl/util.c
index 664081b..ce55aea 100644
--- a/drivers/ddr/fsl/util.c
+++ b/drivers/ddr/fsl/util.c
@@ -23,12 +23,34 @@
#define ULL_8FS 0xFFFFFFFFULL
-u32 fsl_ddr_get_version(void)
+u32 fsl_ddr_get_version(unsigned int ctrl_num)
{
struct ccsr_ddr __iomem *ddr;
u32 ver_major_minor_errata;
- ddr = (void *)_DDR_ADDR;
+ switch (ctrl_num) {
+ case 0:
+ ddr = (void *)CONFIG_SYS_FSL_DDR_ADDR;
+ break;
+#if defined(CONFIG_SYS_FSL_DDR2_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 1)
+ case 1:
+ ddr = (void *)CONFIG_SYS_FSL_DDR2_ADDR;
+ break;
+#endif
+#if defined(CONFIG_SYS_FSL_DDR3_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 2)
+ case 2:
+ ddr = (void *)CONFIG_SYS_FSL_DDR3_ADDR;
+ break;
+#endif
+#if defined(CONFIG_SYS_FSL_DDR4_ADDR) && (CONFIG_NUM_DDR_CONTROLLERS > 3)
+ case 3:
+ ddr = (void *)CONFIG_SYS_FSL_DDR4_ADDR;
+ break;
+#endif
+ default:
+ printf("%s unexpected ctrl_num = %u\n", __func__, ctrl_num);
+ return 0;
+ }
ver_major_minor_errata = (ddr_in32(&ddr->ip_rev1) & 0xFFFF) << 8;
ver_major_minor_errata |= (ddr_in32(&ddr->ip_rev2) & 0xFF00) >> 8;
@@ -212,7 +234,7 @@
/* Calculate CAS latency based on timing cfg values */
cas_lat = ((ddr_in32(&ddr->timing_cfg_1) >> 16) & 0xf);
- if (fsl_ddr_get_version() <= 0x40400)
+ if (fsl_ddr_get_version(0) <= 0x40400)
cas_lat += 1;
else
cas_lat += 2;