karo: tx53: add support for TX53-1232 (2GiB SDRAM)

[karo-tx-uboot.git] / board / karo / tx53 / lowlevel_init.S

diff --git a/board/karo/tx53/lowlevel_init.S b/board/karo/tx53/lowlevel_init.S
index 15f2245c41b77ea65e894e08f1829a4932fcae91..566667cd8e361bec96edcdef89691e31fb9dced6 100644 (file)
--- a/board/karo/tx53/lowlevel_init.S
+++ b/board/karo/tx53/lowlevel_init.S
@@ -105,6 +105,7 @@ dcd_end:
 #define CK_TO_NS(ck)   (((ck) * 1000 + SDRAM_CLK / 2) / SDRAM_CLK)
 #define NS_TO_CK(ns)   (((ns) * SDRAM_CLK + 999) / 1000)
 #define NS_TO_CK10(ns) DIV_ROUND_UP(NS_TO_CK(ns), 10)
+#define NS_TO_CK100(ns)        DIV_ROUND_UP(NS_TO_CK(ns), 100)
 
        .macro          CK_VAL, name, clks, offs, max
        .iflt           \clks - \offs
@@ -152,7 +153,6 @@ dcd_end:
 #define ADDR_MIRROR                    0
 #define DDR_TYPE                       ESDMISC_DDR_TYPE_DDR3
 
-/* 512/1024MiB SDRAM: NT5CB128M16FP-DII */
 #if SDRAM_CLK > 666 && SDRAM_CLK <= 800
 #define CL_VAL 11
 #define CWL_VAL        8
@@ -172,6 +172,8 @@ dcd_end:
 #error SDRAM clock out of range: 303 .. 800
 #endif
 
+#if SDRAM_SIZE < 2048
+/* 512/1024MiB SDRAM: NT5CB128M16FP-DII */
 /* ESDCFG0 0x0c */
 NS_VAL tRFC,   160, 1, 255             /* clks - 1 (0..255) */
 CK_MAX tXS,    NS_TO_CK(CK_TO_NS(tRFC + 1) + 10), 5, 1, 255 /* clks - 1 (0..255) tRFC + 10 */
@@ -198,13 +200,42 @@ CK_MAX    tRRD,   NS_TO_CK(10), 4, 1, 7   /* clks - 1 (0..7) */
 
 /* ESDOR 0x30 */
 CK_MAX tXPR,   NS_TO_CK(CK_TO_NS(tRFC + 1) + 10), 5, 1, 255 /* clks - 1 (0..255) max(tRFC + 10, 5CK) */
+#else
+/* 4096MiB SDRAM: IM4G16D3EABG-125I */
+/* ESDCFG0 0x0c */
+NS_VAL tRFC,   260, 1, 255             /* clks - 1 (0..255) */
+CK_MAX tXS,    NS_TO_CK(CK_TO_NS(tRFC + 1) + 10), 5, 1, 255 /* clks - 1 (0..255) tRFC + 10 */
+CK_MAX tXP,    NS_TO_CK(6), 3, 1, 7 /* clks - 1 (0..7) */ /* max(3tCK, 7.5ns) */
+CK_MAX tXPDLL, NS_TO_CK(24), 2, 1, 15  /* clks - 1 (0..15) */
+NS_VAL tFAW,   30, 1, 31               /* clks - 1 (0..31) */
+CK_VAL tCL,    CL_VAL, 3, 8            /* clks - 3 (0..8) CAS Latency */
+
+/* ESDCFG1 0x10 */
+CK_VAL tRCD,   NS_TO_CK100(1375), 1, 7 /* clks - 1 (0..7) */ /* 13.75 */
+CK_VAL tRP,    NS_TO_CK100(1375), 1, 7 /* clks - 1 (0..7) */ /* 13.75 */
+CK_VAL tRC,    NS_TO_CK100(4875), 1, 31 /* clks - 1 (0..31) */ /* 48.75 */
+CK_VAL tRAS,   NS_TO_CK(35), 1, 31     /* clks - 1 (0..31) */ /* 35 */
+CK_VAL tRPA,   1, 0, 1                 /* clks     (0..1) */
+NS_VAL tWR,    15, 1, 15               /* clks - 1 (0..15) */
+CK_VAL tMRD,   4, 1, 15                /* clks - 1 (0..15) */
+CK_VAL tCWL,   CWL_VAL, 2, 6           /* clks - 2 (0..6) */
+
+/* ESDCFG2 0x14 */
+CK_VAL tDLLK,  512, 1, 511             /* clks - 1 (0..511) */
+CK_MAX tRTP,   NS_TO_CK10(75), 4, 1, 7 /* clks - 1 (0..7) */ /* max(4tCK, 7.5ns) */
+CK_MAX tWTR,   NS_TO_CK10(75), 4, 1, 7 /* clks - 1 (0..7) */ /* max(4tCK, 7.5ns) */
+CK_MAX tRRD,   NS_TO_CK10(75), 4, 1, 7 /* clks - 1 (0..7) */ /* max(4tCK, 7.5ns) */
+
+/* ESDOR 0x30 */
+CK_MAX tXPR,   NS_TO_CK(CK_TO_NS(tRFC + 1) + 10), 5, 1, 255 /* clks - 1 (0..255) max(tRFC + 10, 5CK) */
+#endif
+
 #define tSDE_RST                       (DIV_ROUND_UP(200000, ESDOR_CLK_PERIOD_ns) + 1)
                                        /* Add an extra (or two?) ESDOR_CLK_PERIOD_ns according to
                                         * erroneous Erratum Engcm12377
                                         */
 #define tRST_CKE                       (DIV_ROUND_UP(500000 + 2 * ESDOR_CLK_PERIOD_ns, ESDOR_CLK_PERIOD_ns) + 1)
 
-
 /* ESDOTC 0x08 */
 CK_VAL tAOFPD, NS_TO_CK10(85), 1, 7    /* clks - 1 (0..7) */ /* 8.5ns */
 CK_VAL tAONPD, NS_TO_CK10(85), 1, 7    /* clks - 1 (0..7) */ /* 8.5ns */