[PATCH] ddr: altera: n5x: Copies calibration data to DDR when DDR retention is set

Jit Loon Lim
2022-11-23T14:33:13Z

From: Tien Fong Chee <tien.fong.chee@intel.com>

Ensure the PHY calibration data is copied to DDR only when DDR retention
is set.

Signed-off-by: Tien Fong Chee <tien.fong.chee@intel.com>
Signed-off-by: Jit Loon Lim <jit.loon.lim@intel.com>
---
drivers/ddr/altera/sdram_n5x.c | 11 +++++++----
1 file changed, 7 insertions(+), 4 deletions(-)

diff --git a/drivers/ddr/altera/sdram_n5x.c b/drivers/ddr/altera/sdram_n5x.c
index 8d28cdbc03..72c231b3f1 100644
--- a/drivers/ddr/altera/sdram_n5x.c
+++ b/drivers/ddr/altera/sdram_n5x.c
@@ -3045,10 +3045,13 @@ int sdram_mmr_init_full(struct udevice *dev)

sdram_set_firewall(&bd);

- ddr_offset = simple_strtoul(offset, &endptr, 16);
- if (!(offset == endptr || *endptr != '\0'))
- memcpy((void *)ddr_offset,
- (const void *)SOC64_OCRAM_PHY_BACKUP_BASE, SZ_4K);
+ if (is_ddr_retention_enabled(reg)) {
+ ddr_offset = simple_strtoul(offset, &endptr, 16);
+ if (!(offset == endptr || *endptr != '\0'))
+ memcpy((void *)ddr_offset,
+ (const void *)SOC64_OCRAM_PHY_BACKUP_BASE,
+ SZ_4K);
+ }

return 0;
}
--
2.26.2