mx6: add structs for mmdc and ddr iomux registers

Add memory-mapped structures for MMDC iomux and configuration. Note that whi
the MMDC configuration registers are common between the IMX6DQ
(IMX6DUAL/IMX6QUAD) and IMX6SDL (IMX6SOLO/IMX6DUALLITE) types the iomux
registers differ. This requires two sets of structures.

Add structures to describe DDR3 device information, system information
(memory layout, etc), and MMDC calibration registers that can be used to
configure the MMDC dynamically.

We define these structures for SPL builds instead of including mx6q-ddr.h an
mx6dl-ddr.h which use the same namespace and are only useful for imximage cf
files.

Cc: Stefan Roese <sr@denx.de>
Cc: Otavio Salvador <otavio@ossystems.com.br>
Cc: Andy Ng <andreas2025@gmail.com>
Cc: Eric Nelson <eric.nelson@boundarydevices.com>
Cc: Tapani Utriainen <tapani@technexion.com>
Cc: Tom Rini <trini@ti.com>

Signed-off-by: Tim Harvey <tharvey@gateworks.com>
Acked-by: Nikita Kiryanov <nikita@compulab.co.il>

arch/arm/include/asm/arch-mx6/mx6-ddr.h

@@ -6,6 +6,7 @@
 #ifndef __ASM_ARCH_MX6_DDR_H__
 #define __ASM_ARCH_MX6_DDR_H__
 
+#ifndef CONFIG_SPL_BUILD
 #ifdef CONFIG_MX6Q
 #include "mx6q-ddr.h"
 #else
@@ -15,6 +16,164 @@
 #error "Please select cpu"
 #endif	/* CONFIG_MX6DL or CONFIG_MX6S */
 #endif	/* CONFIG_MX6Q */
+#else
+
+/* MMDC P0/P1 Registers */
+struct mmdc_p_regs {
+	u32 mdctl;
+	u32 mdpdc;
+	u32 mdotc;
+	u32 mdcfg0;
+	u32 mdcfg1;
+	u32 mdcfg2;
+	u32 mdmisc;
+	u32 mdscr;
+	u32 mdref;
+	u32 res1[2];
+	u32 mdrwd;
+	u32 mdor;
+	u32 res2[3];
+	u32 mdasp;
+	u32 res3[240];
+	u32 mapsr;
+	u32 res4[254];
+	u32 mpzqhwctrl;
+	u32 res5[2];
+	u32 mpwldectrl0;
+	u32 mpwldectrl1;
+	u32 res6;
+	u32 mpodtctrl;
+	u32 mprddqby0dl;
+	u32 mprddqby1dl;
+	u32 mprddqby2dl;
+	u32 mprddqby3dl;
+	u32 res7[4];
+	u32 mpdgctrl0;
+	u32 mpdgctrl1;
+	u32 res8;
+	u32 mprddlctl;
+	u32 res9;
+	u32 mpwrdlctl;
+	u32 res10[25];
+	u32 mpmur0;
+};
+
+/*
+ * MMDC iomux registers (pinctl/padctl) - (different for IMX6DQ vs IMX6SDL)
+ */
+#define MX6DQ_IOM_DDR_BASE      0x020e0500
+struct mx6dq_iomux_ddr_regs {
+	u32 res1[3];
+	u32 dram_sdqs5;
+	u32 dram_dqm5;
+	u32 dram_dqm4;
+	u32 dram_sdqs4;
+	u32 dram_sdqs3;
+	u32 dram_dqm3;
+	u32 dram_sdqs2;
+	u32 dram_dqm2;
+	u32 res2[16];
+	u32 dram_cas;
+	u32 res3[2];
+	u32 dram_ras;
+	u32 dram_reset;
+	u32 res4[2];
+	u32 dram_sdclk_0;
+	u32 dram_sdba2;
+	u32 dram_sdcke0;
+	u32 dram_sdclk_1;
+	u32 dram_sdcke1;
+	u32 dram_sdodt0;
+	u32 dram_sdodt1;
+	u32 res5;
+	u32 dram_sdqs0;
+	u32 dram_dqm0;
+	u32 dram_sdqs1;
+	u32 dram_dqm1;
+	u32 dram_sdqs6;
+	u32 dram_dqm6;
+	u32 dram_sdqs7;
+	u32 dram_dqm7;
+};
+
+#define MX6DQ_IOM_GRP_BASE      0x020e0700
+struct mx6dq_iomux_grp_regs {
+	u32 res1[18];
+	u32 grp_b7ds;
+	u32 grp_addds;
+	u32 grp_ddrmode_ctl;
+	u32 res2;
+	u32 grp_ddrpke;
+	u32 res3[6];
+	u32 grp_ddrmode;
+	u32 res4[3];
+	u32 grp_b0ds;
+	u32 grp_b1ds;
+	u32 grp_ctlds;
+	u32 res5;
+	u32 grp_b2ds;
+	u32 grp_ddr_type;
+	u32 grp_b3ds;
+	u32 grp_b4ds;
+	u32 grp_b5ds;
+	u32 grp_b6ds;
+};
+
+#define MX6SDL_IOM_DDR_BASE     0x020e0400
+struct mx6sdl_iomux_ddr_regs {
+	u32 res1[25];
+	u32 dram_cas;
+	u32 res2[2];
+	u32 dram_dqm0;
+	u32 dram_dqm1;
+	u32 dram_dqm2;
+	u32 dram_dqm3;
+	u32 dram_dqm4;
+	u32 dram_dqm5;
+	u32 dram_dqm6;
+	u32 dram_dqm7;
+	u32 dram_ras;
+	u32 dram_reset;
+	u32 res3[2];
+	u32 dram_sdba2;
+	u32 dram_sdcke0;
+	u32 dram_sdcke1;
+	u32 dram_sdclk_0;
+	u32 dram_sdclk_1;
+	u32 dram_sdodt0;
+	u32 dram_sdodt1;
+	u32 dram_sdqs0;
+	u32 dram_sdqs1;
+	u32 dram_sdqs2;
+	u32 dram_sdqs3;
+	u32 dram_sdqs4;
+	u32 dram_sdqs5;
+	u32 dram_sdqs6;
+	u32 dram_sdqs7;
+};
+
+#define MX6SDL_IOM_GRP_BASE     0x020e0700
+struct mx6sdl_iomux_grp_regs {
+	u32 res1[18];
+	u32 grp_b7ds;
+	u32 grp_addds;
+	u32 grp_ddrmode_ctl;
+	u32 grp_ddrpke;
+	u32 res2[2];
+	u32 grp_ddrmode;
+	u32 grp_b0ds;
+	u32 res3;
+	u32 grp_ctlds;
+	u32 grp_b1ds;
+	u32 grp_ddr_type;
+	u32 grp_b2ds;
+	u32 grp_b3ds;
+	u32 grp_b4ds;
+	u32 grp_b5ds;
+	u32 res4;
+	u32 grp_b6ds;
+};
+#endif /* CONFIG_SPL_BUILD */
 
 #define MX6_MMDC_P0_MDCTL	0x021b0000
 #define MX6_MMDC_P0_MDPDC	0x021b0004