[PATCH 3/8] ram: k3-ddrss: Add comment about ecc_reserved_space

[Neha Malcom Francis]

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-francis at ti.com>
---
 drivers/ram/k3-ddrss/k3-ddrss.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/ram/k3-ddrss/k3-ddrss.c b/drivers/ram/k3-ddrss/k3-ddrss.c
index 24932cd837c..ab46098adbf 100644
--- a/drivers/ram/k3-ddrss/k3-ddrss.c
+++ b/drivers/ram/k3-ddrss/k3-ddrss.c
@@ -715,6 +715,10 @@ static void k3_ddrss_lpddr4_ecc_calc_reserved_mem(struct k3_ddrss_desc *ddrss)
 {
 	fdtdec_setup_mem_size_base_lowest();
 
+	/*
+	 * Reserved region remains 1/9th of the total DDR available no matter 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