v3.19.8-ckt17 -stable review patch. If anyone has any objections, please let
me know.
---8<------------------------------------------------------------
From: Timothy Pearson <tpear...@raptorengineeringinc.com>
commit 2d02b8bdba322b527c5f5168ce1ca10c2d982a78 upstream.
During DRAM initialization on certain ASpeed devices, an incorrect
bit (bit 10) was checked in the "SDRAM Bus Width Status" register
to determine DRAM width.
Query bit 6 instead in accordance with the Aspeed AST2050 datasheet v1.05.
Signed-off-by: Timothy Pearson <tpear...@raptorengineeringinc.com>
Signed-off-by: Dave Airlie <airl...@redhat.com>
Signed-off-by: Kamal Mostafa <ka...@canonical.com>
---
drivers/gpu/drm/ast/ast_main.c | 2 +-
1 file changed, 1 insertion(+), 1 deletion(-)
diff --git a/drivers/gpu/drm/ast/ast_main.c b/drivers/gpu/drm/ast/ast_main.c
index 5b5d431..15c5480 100644
--- a/drivers/gpu/drm/ast/ast_main.c
+++ b/drivers/gpu/drm/ast/ast_main.c
@@ -227,7 +227,7 @@ static int ast_get_dram_info(struct drm_device *dev)
} while (ast_read32(ast, 0x10000) != 0x01);
data = ast_read32(ast, 0x10004);
- if (data & 0x400)
+ if (data & 0x40)
ast->dram_bus_width = 16;
else
ast->dram_bus_width = 32;
--
2.7.0
