[PATCH 1/2] ARM: i.MX: esdctl: add force_split option to add_mem

[Marco Felsch]

Currently add_mem() tries to merge the memory banks if they are
continuous. Add a option to avoid this merge which is not always useful
e.g. for devices with memory > 4G.

Signed-off-by: Marco Felsch <m.felsch at pengutronix.de>
---
 arch/arm/mach-imx/esdctl.c | 14 +++++++-------
 1 file changed, 7 insertions(+), 7 deletions(-)

diff --git a/arch/arm/mach-imx/esdctl.c b/arch/arm/mach-imx/esdctl.c
index 1798ad48e50a..54c62c47338e 100644
--- a/arch/arm/mach-imx/esdctl.c
+++ b/arch/arm/mach-imx/esdctl.c
@@ -183,14 +183,14 @@ static inline u64 __imx6_mmdc_sdram_size(void __iomem *mmdcbase, int cs)
 }
 
 static int add_mem(unsigned long base0, unsigned long size0,
-		unsigned long base1, unsigned long size1)
+		   unsigned long base1, unsigned long size1, bool force_split)
 {
 	int ret0 = 0, ret1 = 0;
 
 	debug("%s: cs0 base: 0x%08lx cs0 size: 0x%08lx\n", __func__, base0, size0);
 	debug("%s: cs1 base: 0x%08lx cs1 size: 0x%08lx\n", __func__, base1, size1);
 
-	if (base0 + size0 == base1 && size1 > 0) {
+	if (!force_split && base0 + size0 == base1 && size1 > 0) {
 		/*
 		 * concatenate both chip selects to a single bank
 		 */
@@ -229,13 +229,13 @@ static inline void imx_esdctl_v2_disable_default(void __iomem *esdctlbase)
 static int imx_esdctl_v1_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
 {
 	return add_mem(data->base0, imx_v1_sdram_size(esdctlbase, 0),
-			data->base1, imx_v1_sdram_size(esdctlbase, 1));
+		       data->base1, imx_v1_sdram_size(esdctlbase, 1), false);
 }
 
 static int imx_esdctl_v2_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
 {
 	return add_mem(data->base0, imx_v2_sdram_size(esdctlbase, 0),
-			data->base1, imx_v2_sdram_size(esdctlbase, 1));
+		       data->base1, imx_v2_sdram_size(esdctlbase, 1), false);
 }
 
 static int imx_esdctl_v2_bug_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
@@ -243,19 +243,19 @@ static int imx_esdctl_v2_bug_add_mem(void *esdctlbase, struct imx_esdctl_data *d
 	imx_esdctl_v2_disable_default(esdctlbase);
 
 	return add_mem(data->base0, imx_v2_sdram_size(esdctlbase, 0),
-			data->base1, imx_v2_sdram_size(esdctlbase, 1));
+		       data->base1, imx_v2_sdram_size(esdctlbase, 1), false);
 }
 
 static int imx_esdctl_v3_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
 {
 	return add_mem(data->base0, imx_v3_sdram_size(esdctlbase, 0),
-			data->base1, imx_v3_sdram_size(esdctlbase, 1));
+		       data->base1, imx_v3_sdram_size(esdctlbase, 1), false);
 }
 
 static int imx_esdctl_v4_add_mem(void *esdctlbase, struct imx_esdctl_data *data)
 {
 	return add_mem(data->base0, imx_v4_sdram_size(esdctlbase, 0),
-			data->base1, imx_v4_sdram_size(esdctlbase, 1));
+		       data->base1, imx_v4_sdram_size(esdctlbase, 1), false);
 }
 
 /*
-- 
2.39.2