diff --git a/openpower/linux/0003-drm-ast-Fix-AST2400-POST-failure-without-BMC-FW-or-V.patch b/openpower/linux/0003-drm-ast-Fix-AST2400-POST-failure-without-BMC-FW-or-V.patch
new file mode 100644
index 0000000..f988f8a
--- /dev/null
+++ b/openpower/linux/0003-drm-ast-Fix-AST2400-POST-failure-without-BMC-FW-or-V.patch
@@ -0,0 +1,72 @@
+From 0000000000000000000000000000000000000000 Mon Sep 17 00:00:00 2001
+From: "Y.C. Chen" <yc_chen@aspeedtech.com>
+Date: Thu, 23 Feb 2017 15:52:33 +0800
+Subject: [PATCH 03/15] drm/ast: Fix AST2400 POST failure without BMC FW or
+ VBIOS
+
+The current POST code for the AST2300/2400 family doesn't work properly
+if the chip hasn't been initialized previously by either the BMC own FW
+or the VBIOS. This fixes it.
+
+Signed-off-by: Y.C. Chen <yc_chen@aspeedtech.com>
+Signed-off-by: Benjamin Herrenschmidt <benh@kernel.crashing.org>
+Signed-off-by: Joel Stanley <joel@jms.id.au>
+---
+ drivers/gpu/drm/ast/ast_post.c | 38 +++++++++++++++++++++++++++++++++++---
+ 1 file changed, 35 insertions(+), 3 deletions(-)
+
+diff --git a/drivers/gpu/drm/ast/ast_post.c b/drivers/gpu/drm/ast/ast_post.c
+index 5331ee1df086..6c5391cb90eb 100644
+--- a/drivers/gpu/drm/ast/ast_post.c
++++ b/drivers/gpu/drm/ast/ast_post.c
+@@ -1638,12 +1638,44 @@ static void ast_init_dram_2300(struct drm_device *dev)
+ 		temp |= 0x73;
+ 		ast_write32(ast, 0x12008, temp);
+ 
++		param.dram_freq = 396;
+ 		param.dram_type = AST_DDR3;
++		temp = ast_mindwm(ast, 0x1e6e2070);
+ 		if (temp & 0x01000000)
+ 			param.dram_type = AST_DDR2;
+-		param.dram_chipid = ast->dram_type;
+-		param.dram_freq = ast->mclk;
+-		param.vram_size = ast->vram_size;
++                switch (temp & 0x18000000) {
++		case 0:
++			param.dram_chipid = AST_DRAM_512Mx16;
++			break;
++		default:
++		case 0x08000000:
++			param.dram_chipid = AST_DRAM_1Gx16;
++			break;
++		case 0x10000000:
++			param.dram_chipid = AST_DRAM_2Gx16;
++			break;
++		case 0x18000000:
++			param.dram_chipid = AST_DRAM_4Gx16;
++			break;
++		}
++                switch (temp & 0x0c) {
++                default:
++		case 0x00:
++			param.vram_size = AST_VIDMEM_SIZE_8M;
++			break;
++
++		case 0x04:
++			param.vram_size = AST_VIDMEM_SIZE_16M;
++			break;
++
++		case 0x08:
++			param.vram_size = AST_VIDMEM_SIZE_32M;
++			break;
++
++		case 0x0c:
++			param.vram_size = AST_VIDMEM_SIZE_64M;
++			break;
++		}
+ 
+ 		if (param.dram_type == AST_DDR3) {
+ 			get_ddr3_info(ast, &param);
+-- 
+2.11.0
+