imx: mx6: ddr add an entry ddr_type for mx6_ddr_sysinfo

Add ddr_type entry for mx6_ddr_sysinfo. It will be used for
differenrate DDR3 and LPDDR2.

Introduce an enum type for ddr_type.

Signed-off-by: Peng Fan <[email protected]>
Cc: Stefano Babic <[email protected]>
Cc: Tim Harvey <[email protected]>

diff --git a/arch/arm/include/asm/arch-mx6/mx6-ddr.h b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
index b7bae7b17f9baf1e5bb2a7806734255650abc685..806fafb0690074fd348daa84a8d3c37a05ea3d2f 100644 (file)
--- a/arch/arm/include/asm/arch-mx6/mx6-ddr.h
+++ b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
@@ -30,6 +30,11 @@
 #endif /* CONFIG_MX6Q */
 #else
 
+enum {
+       DDR_TYPE_DDR3,
+       DDR_TYPE_LPDDR2,
+};
+
 /* MMDC P0/P1 Registers */
 struct mmdc_p_regs {
        u32 mdctl;
@@ -387,6 +392,7 @@ struct mx6_ddr_sysinfo {
        u8 rst_to_cke;  /* Time from SDE enable to CKE rise */
        u8 sde_to_rst;  /* Time from SDE enable until DDR reset# is high */
        u8 pd_fast_exit;/* enable precharge powerdown fast-exit */
+       u8 ddr_type;    /* DDR type: DDR3(0) or LPDDR2(1) */
 };
 
 /*