[PATCH v3 1/3] rockchip: sdram: Allow the first bank to extend beyond 4 GiB

Jonas Karlman jonas at kwiboo.se
Thu Jan 30 23:07:11 CET 2025


Allow the first bank to extend beyond 4 GiB when the blob of space for
peripheral is located before start of DRAM, e.g. when start of DRAM
is 0x40000000 and continue beyond the 4 GiB mark.

Signed-off-by: Jonas Karlman <jonas at kwiboo.se>
Reviewed-by: Kever Yang <kever.yang at rock-chips.com>
---
v3: No change
v2: Collect r-b tag
---
 arch/arm/mach-rockchip/sdram.c | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/arch/arm/mach-rockchip/sdram.c b/arch/arm/mach-rockchip/sdram.c
index 1fb01e1c4b13..96a791bda2c3 100644
--- a/arch/arm/mach-rockchip/sdram.c
+++ b/arch/arm/mach-rockchip/sdram.c
@@ -309,6 +309,8 @@ int dram_init_banksize(void)
 	if (ram_top > SZ_4G && top < SZ_4G) {
 		gd->bd->bi_dram[1].start = SZ_4G;
 		gd->bd->bi_dram[1].size = ram_top - gd->bd->bi_dram[1].start;
+	} else if (ram_top > SZ_4G && top == SZ_4G) {
+		gd->bd->bi_dram[0].size = ram_top - gd->bd->bi_dram[0].start;
 	}
 #else
 #ifdef CONFIG_SPL_OPTEE_IMAGE
-- 
2.48.1



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