mx6: ddr: Allow changing REFSEL and REFR fields

[people/ms/u-boot.git] / arch / arm / include / asm / arch-mx6 / mx6-ddr.h

diff --git a/arch/arm/include/asm/arch-mx6/mx6-ddr.h b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
index 36fcb2b6fc0c1c1e193651937a7c6cb1916e033c..99224091baa2a7d013f2c09ab91d6e671cd6a2e9 100644 (file)
--- a/arch/arm/include/asm/arch-mx6/mx6-ddr.h
+++ b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
@@ -377,6 +377,21 @@ struct mx6_ddr3_cfg {
        u8 SRT;         /* self-refresh temperature: 0=normal, 1=extended */
 };
 
+/* Device Information: Varies per LPDDR2 part number and speed grade */
+struct mx6_lpddr2_cfg {
+       u16 mem_speed;  /* ie 800 for LPDDR2-800 */
+       u8 density;     /* chip density (Gb) (1,2,4,8) */
+       u8 width;       /* bus width (bits) (4,8,16) */
+       u8 banks;       /* number of banks */
+       u8 rowaddr;     /* row address bits (11-16)*/
+       u8 coladdr;     /* col address bits (9-12) */
+       u16 trcd_lp;
+       u16 trppb_lp;
+       u16 trpab_lp;
+       u16 trcmin;     /* tRC min (ns*100) */
+       u16 trasmin;    /* tRAS min (ns*100) */
+};
+
 /* System Information: Varies per board design, layout, and term choices */
 struct mx6_ddr_sysinfo {
        u8 dsize;       /* size of bus (in dwords: 0=16bit,1=32bit,2=64bit) */
@@ -393,6 +408,8 @@ struct mx6_ddr_sysinfo {
        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) */
+       u8 refsel;      /* REF_SEL field of register MDREF */
+       u8 refr;        /* REFR field of register MDREF */
 };
 
 /*
@@ -441,6 +458,11 @@ void mx6sl_dram_iocfg(unsigned width,
                      const struct mx6sl_iomux_ddr_regs *,
                      const struct mx6sl_iomux_grp_regs *);
 
+#if defined(CONFIG_MX6QDL) || defined(CONFIG_MX6Q) || defined(CONFIG_MX6D)
+int mmdc_do_write_level_calibration(void);
+int mmdc_do_dqs_calibration(void);
+#endif
+
 /* configure mx6 mmdc registers */
 void mx6_dram_cfg(const struct mx6_ddr_sysinfo *,
                  const struct mx6_mmdc_calibration *,