1 files changed, 308 insertions, 0 deletions
diff --git a/arch/arm/cpu/armv7/omap4/sdram_elpida.c b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
new file mode 100644
index 0000000..20fc552
--- /dev/null
+++ b/arch/arm/cpu/armv7/omap4/sdram_elpida.c
@@ -0,0 +1,308 @@
+/*
+ * Timing and Organization details of the Elpida parts used in OMAP4
+ * SDPs and Panda
+ *
+ * (C) Copyright 2010
+ * Texas Instruments, <www.ti.com>
+ *
+ * Aneesh V <aneesh@ti.com>
+ *
+ * See file CREDITS for list of people who contributed to this
+ * project.
+ *
+ * This program is free software; you can redistribute it and/or
+ * modify it under the terms of the GNU General Public License as
+ * published by the Free Software Foundation; either version 2 of
+ * the License, or (at your option) any later version.
+ *
+ * This program is distributed in the hope that it will be useful,
+ * but WITHOUT ANY WARRANTY; without even the implied warranty of
+ * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
+ * GNU General Public License for more details.
+ *
+ * You should have received a copy of the GNU General Public License
+ * along with this program; if not, write to the Free Software
+ * Foundation, Inc., 59 Temple Place, Suite 330, Boston,
+ * MA 02111-1307 USA
+ */
+
+#include <asm/emif.h>
+#include <asm/arch/sys_proto.h>
+
+/*
+ * This file provides details of the LPDDR2 SDRAM parts used on OMAP4430
+ * SDP and Panda. Since the parts used and geometry are identical for
+ * SDP and Panda for a given OMAP4 revision, this information is kept
+ * here instead of being in board directory. However the key functions
+ * exported are weakly linked so that they can be over-ridden in the board
+ * directory if there is a OMAP4 board in the future that uses a different
+ * memory device or geometry.
+ *
+ * For any new board with different memory devices over-ride one or more
+ * of the following functions as per the CONFIG flags you intend to enable:
+ * - emif_get_reg_dump()
+ * - emif_get_dmm_regs()
+ * - emif_get_device_details()
+ * - emif_get_device_timings()
+ */
+
+#ifdef CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS
+
+static const struct emif_regs emif_regs_elpida_200_mhz_2cs = {
+	.sdram_config_init		= 0x80000eb9,
+	.sdram_config			= 0x80001ab9,
+	.ref_ctrl			= 0x0000030c,
+	.sdram_tim1			= 0x08648311,
+	.sdram_tim2			= 0x101b06ca,
+	.sdram_tim3			= 0x0048a19f,
+	.read_idle_ctrl			= 0x000501ff,
+	.zq_config			= 0x500b3214,
+	.temp_alert_config		= 0xd8016893,
+	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
+	.emif_ddr_phy_ctlr_1		= 0x049ff808
+};
+
+static const struct emif_regs emif_regs_elpida_380_mhz_1cs = {
+	.sdram_config_init		= 0x80000eb1,
+	.sdram_config			= 0x80001ab1,
+	.ref_ctrl			= 0x000005cd,
+	.sdram_tim1			= 0x10cb0622,
+	.sdram_tim2			= 0x20350d52,
+	.sdram_tim3			= 0x00b1431f,
+	.read_idle_ctrl			= 0x000501ff,
+	.zq_config			= 0x500b3214,
+	.temp_alert_config		= 0x58016893,
+	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
+	.emif_ddr_phy_ctlr_1		= 0x049ff418
+};
+
+const struct emif_regs emif_regs_elpida_400_mhz_2cs = {
+	.sdram_config_init		= 0x80000eb9,
+	.sdram_config			= 0x80001ab9,
+	.ref_ctrl			= 0x00000618,
+	.sdram_tim1			= 0x10eb0662,
+	.sdram_tim2			= 0x20370dd2,
+	.sdram_tim3			= 0x00b1c33f,
+	.read_idle_ctrl			= 0x000501ff,
+	.zq_config			= 0xd00b3214,
+	.temp_alert_config		= 0xd8016893,
+	.emif_ddr_phy_ctlr_1_init	= 0x049ffff5,
+	.emif_ddr_phy_ctlr_1		= 0x049ff418
+};
+
+const struct dmm_lisa_map_regs lisa_map_2G_x_1_x_2 = {
+	.dmm_lisa_map_0 = 0xFF020100,
+	.dmm_lisa_map_1 = 0,
+	.dmm_lisa_map_2 = 0,
+	.dmm_lisa_map_3 = 0x80540300,
+	.is_ma_present	= 0x0
+};
+
+const struct dmm_lisa_map_regs lisa_map_2G_x_2_x_2 = {
+	.dmm_lisa_map_0 = 0xFF020100,
+	.dmm_lisa_map_1 = 0,
+	.dmm_lisa_map_2 = 0,
+	.dmm_lisa_map_3 = 0x80640300,
+	.is_ma_present	= 0x0
+};
+
+const struct dmm_lisa_map_regs ma_lisa_map_2G_x_2_x_2 = {
+	.dmm_lisa_map_0 = 0xFF020100,
+	.dmm_lisa_map_1 = 0,
+	.dmm_lisa_map_2 = 0,
+	.dmm_lisa_map_3 = 0x80640300,
+	.is_ma_present	= 0x1
+};
+
+static void emif_get_reg_dump_sdp(u32 emif_nr, const struct emif_regs **regs)
+{
+	u32 omap4_rev = omap_revision();
+
+	/* Same devices and geometry on both EMIFs */
+	if (omap4_rev == OMAP4430_ES1_0)
+		*regs = &emif_regs_elpida_380_mhz_1cs;
+	else if (omap4_rev == OMAP4430_ES2_0)
+		*regs = &emif_regs_elpida_200_mhz_2cs;
+	else
+		*regs = &emif_regs_elpida_400_mhz_2cs;
+}
+void emif_get_reg_dump(u32 emif_nr, const struct emif_regs **regs)
+	__attribute__((weak, alias("emif_get_reg_dump_sdp")));
+
+static void emif_get_dmm_regs_sdp(const struct dmm_lisa_map_regs
+						**dmm_lisa_regs)
+{
+	u32 omap_rev = omap_revision();
+
+	if (omap_rev == OMAP4430_ES1_0)
+		*dmm_lisa_regs = &lisa_map_2G_x_1_x_2;
+	else if (omap_rev < OMAP4460_ES1_0)
+		*dmm_lisa_regs = &lisa_map_2G_x_2_x_2;
+	else
+		*dmm_lisa_regs = &ma_lisa_map_2G_x_2_x_2;
+}
+
+void emif_get_dmm_regs(const struct dmm_lisa_map_regs **dmm_lisa_regs)
+	__attribute__((weak, alias("emif_get_dmm_regs_sdp")));
+
+#else
+
+static const struct lpddr2_device_details elpida_2G_S4_details = {
+	.type		= LPDDR2_TYPE_S4,
+	.density	= LPDDR2_DENSITY_2Gb,
+	.io_width	= LPDDR2_IO_WIDTH_32,
+	.manufacturer	= LPDDR2_MANUFACTURER_ELPIDA
+};
+
+struct lpddr2_device_details *emif_get_device_details_sdp(u32 emif_nr, u8 cs,
+			struct lpddr2_device_details *lpddr2_dev_details)
+{
+	u32 omap_rev = omap_revision();
+
+	/* EMIF1 & EMIF2 have identical configuration */
+	if ((omap_rev == OMAP4430_ES1_0) && (cs == CS1)) {
+		/* Nothing connected on CS1 for ES1.0 */
+		return NULL;
+	} else {
+		/* In all other cases Elpida 2G device */
+		*lpddr2_dev_details = elpida_2G_S4_details;
+		return lpddr2_dev_details;
+	}
+}
+
+struct lpddr2_device_details *emif_get_device_details(u32 emif_nr, u8 cs,
+			struct lpddr2_device_details *lpddr2_dev_details)
+	__attribute__((weak, alias("emif_get_device_details_sdp")));
+
+#endif /* CONFIG_SYS_EMIF_PRECALCULATED_TIMING_REGS */
+
+#ifndef CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS
+static const struct lpddr2_ac_timings timings_elpida_400_mhz = {
+	.max_freq	= 400000000,
+	.RL		= 6,
+	.tRPab		= 21,
+	.tRCD		= 18,
+	.tWR		= 15,
+	.tRASmin	= 42,
+	.tRRD		= 10,
+	.tWTRx2		= 15,
+	.tXSR		= 140,
+	.tXPx2		= 15,
+	.tRFCab		= 130,
+	.tRTPx2		= 15,
+	.tCKE		= 3,
+	.tCKESR		= 15,
+	.tZQCS		= 90,
+	.tZQCL		= 360,
+	.tZQINIT	= 1000,
+	.tDQSCKMAXx2	= 11,
+	.tRASmax	= 70,
+	.tFAW		= 50
+};
+
+static const struct lpddr2_ac_timings timings_elpida_333_mhz = {
+	.max_freq	= 333000000,
+	.RL		= 5,
+	.tRPab		= 21,
+	.tRCD		= 18,
+	.tWR		= 15,
+	.tRASmin	= 42,
+	.tRRD		= 10,
+	.tWTRx2		= 15,
+	.tXSR		= 140,
+	.tXPx2		= 15,
+	.tRFCab		= 130,
+	.tRTPx2		= 15,
+	.tCKE		= 3,
+	.tCKESR		= 15,
+	.tZQCS		= 90,
+	.tZQCL		= 360,
+	.tZQINIT	= 1000,
+	.tDQSCKMAXx2	= 11,
+	.tRASmax	= 70,
+	.tFAW		= 50
+};
+
+static const struct lpddr2_ac_timings timings_elpida_200_mhz = {
+	.max_freq	= 200000000,
+	.RL		= 3,
+	.tRPab		= 21,
+	.tRCD		= 18,
+	.tWR		= 15,
+	.tRASmin	= 42,
+	.tRRD		= 10,
+	.tWTRx2		= 20,
+	.tXSR		= 140,
+	.tXPx2		= 15,
+	.tRFCab		= 130,
+	.tRTPx2		= 15,
+	.tCKE		= 3,
+	.tCKESR		= 15,
+	.tZQCS		= 90,
+	.tZQCL		= 360,
+	.tZQINIT	= 1000,
+	.tDQSCKMAXx2	= 11,
+	.tRASmax	= 70,
+	.tFAW		= 50
+};
+
+static const struct lpddr2_min_tck min_tck_elpida = {
+	.tRL		= 3,
+	.tRP_AB		= 3,
+	.tRCD		= 3,
+	.tWR		= 3,
+	.tRAS_MIN	= 3,
+	.tRRD		= 2,
+	.tWTR		= 2,
+	.tXP		= 2,
+	.tRTP		= 2,
+	.tCKE		= 3,
+	.tCKESR		= 3,
+	.tFAW		= 8
+};
+
+static const struct lpddr2_ac_timings *elpida_ac_timings[MAX_NUM_SPEEDBINS] = {
+		&timings_elpida_200_mhz,
+		&timings_elpida_333_mhz,
+		&timings_elpida_400_mhz
+};
+
+static const struct lpddr2_device_timings elpida_2G_S4_timings = {
+	.ac_timings	= elpida_ac_timings,
+	.min_tck	= &min_tck_elpida,
+};
+
+void emif_get_device_timings_sdp(u32 emif_nr,
+		const struct lpddr2_device_timings **cs0_device_timings,
+		const struct lpddr2_device_timings **cs1_device_timings)
+{
+	u32 omap_rev = omap_revision();
+
+	/* Identical devices on EMIF1 & EMIF2 */
+	*cs0_device_timings = &elpida_2G_S4_timings;
+
+	if (omap_rev == OMAP4430_ES1_0)
+		*cs1_device_timings = NULL;
+	else
+		*cs1_device_timings = &elpida_2G_S4_timings;
+}
+
+void emif_get_device_timings(u32 emif_nr,
+		const struct lpddr2_device_timings **cs0_device_timings,
+		const struct lpddr2_device_timings **cs1_device_timings)
+	__attribute__((weak, alias("emif_get_device_timings_sdp")));
+
+#endif /* CONFIG_SYS_DEFAULT_LPDDR2_TIMINGS */
+
+const struct lpddr2_mr_regs mr_regs = {
+	.mr1	= MR1_BL_8_BT_SEQ_WRAP_EN_NWR_3,
+	.mr2	= 0x4,
+	.mr3	= -1,
+	.mr10	= MR10_ZQ_ZQINIT,
+	.mr16	= MR16_REF_FULL_ARRAY
+};
+
+void get_lpddr2_mr_regs(const struct lpddr2_mr_regs **regs)
+{
+	*regs = &mr_regs;
+}