The reserved space needed for storing the parity remains the same no
matter the size of the region that is being protected. Add this as a
comment for better code understanding.
Signed-off-by: Neha Malcom Francis <n-fran...@ti.com>
---
drivers/ram/k3-ddrss/k3-ddrss.c | 5 +++++
1 file changed, 5 insertions(+)
diff --git a/drivers/ram/k3-ddrss/k3-ddrss.c b/drivers/ram/k3-ddrss/k3-ddrss.c
index ee1d9b5998f..a94755c3542 100644
--- a/drivers/ram/k3-ddrss/k3-ddrss.c
+++ b/drivers/ram/k3-ddrss/k3-ddrss.c
@@ -737,6 +737,11 @@ static void k3_ddrss_lpddr4_ecc_calc_reserved_mem(struct
k3_ddrss_desc *ddrss)
{
fdtdec_setup_mem_size_base_lowest();
+ /*
+ * For every 512-byte data block, 64 bytes of ECC is stored inline and
+ * is a reserved region. It remains 1/9th of the total DDR size
+ * irrespective of the size of the region under protection.
+ */
ddrss->ecc_reserved_space = ddrss->ddr_ram_size;
do_div(ddrss->ecc_reserved_space, 9);
--
2.34.1
