imx: ventana: Add new memory configuration

Add memory configuration for an IMX6SDL + 1GB density DRAM.

Signed-off-by: Pushpal Sidhu <psidhu@gateworks.com>
Signed-off-by: Tim Harvey <tharvey@gateworks.com>

board/gateworks/gw_ventana/gw_ventana_spl.c

@@ -188,6 +188,20 @@ struct mx6sdl_iomux_grp_regs mx6sdl_grp_ioregs = {
 	.grp_b7ds = 0x00000030,
 };
 
+/* MT41K64M16JT-125 (1Gb density) */
+static struct mx6_ddr3_cfg mt41k64m16jt_125 = {
+	.mem_speed = 1600,
+	.density = 1,
+	.width = 16,
+	.banks = 8,
+	.rowaddr = 13,
+	.coladdr = 10,
+	.pagesz = 2,
+	.trcd = 1375,
+	.trcmin = 4875,
+	.trasmin = 3500,
+};
+
 /* MT41K128M16JT-125 (2Gb density) */
 static struct mx6_ddr3_cfg mt41k128m16jt_125 = {
 	.mem_speed = 1600,
@@ -219,6 +233,18 @@ static struct mx6_ddr3_cfg mt41k256m16ha_125 = {
 /*
  * calibration - these are the various CPU/DDR3 combinations we support
  */
+static struct mx6_mmdc_calibration mx6sdl_64x16_mmdc_calib = {
+	/* write leveling calibration determine */
+	.p0_mpwldectrl0 = 0x004C004E,
+	.p0_mpwldectrl1 = 0x00440044,
+	/* Read DQS Gating calibration */
+	.p0_mpdgctrl0 = 0x42440247,
+	.p0_mpdgctrl1 = 0x02310232,
+	/* Read Calibration: DQS delay relative to DQ read access */
+	.p0_mprddlctl = 0x45424746,
+	/* Write Calibration: DQ/DM delay relative to DQS write access */
+	.p0_mpwrdlctl = 0x33382C31,
+};
 
 static struct mx6_mmdc_calibration mx6dq_256x16_mmdc_calib = {
 	/* write leveling calibration determine */
@@ -389,7 +415,14 @@ static void spl_dram_init(int width, int size_mb, int board_model)
 	 *   mx6_ddr_sysinfo - board-specific memory architecture (width/cs/etc)
 	 *   mx6_ddr_cfg - chip specific timing/layout details
 	 */
-	if (width == 16 && size_mb == 256) {
+	if (width == 16 && size_mb == 128) {
+		mem = &mt41k64m16jt_125;
+		if (is_cpu_type(MXC_CPU_MX6Q))
+			;
+		else
+			calib = &mx6sdl_64x16_mmdc_calib;
+		debug("1gB density\n");
+	} else if (width == 16 && size_mb == 256) {
 		/* 1x 2Gb density chip - same calib as 2x 2Gb */
 		mem = &mt41k128m16jt_125;
 		if (is_cpu_type(MXC_CPU_MX6Q))
@@ -404,6 +437,14 @@ static void spl_dram_init(int width, int size_mb, int board_model)
 		else
 			calib = &mx6sdl_256x16_mmdc_calib;
 		debug("4gB density\n");
+	} else if (width == 32 && size_mb == 256) {
+		/* Same calib as width==16, size==128 */
+		mem = &mt41k64m16jt_125;
+		if (is_cpu_type(MXC_CPU_MX6Q))
+			;
+		else
+			calib = &mx6sdl_64x16_mmdc_calib;
+		debug("1gB density\n");
 	} else if (width == 32 && size_mb == 512) {
 		mem = &mt41k128m16jt_125;
 		if (is_cpu_type(MXC_CPU_MX6Q))
@@ -411,6 +452,16 @@ static void spl_dram_init(int width, int size_mb, int board_model)
 		else
 			calib = &mx6sdl_128x32_mmdc_calib;
 		debug("2gB density\n");
+	}  else if (width == 32 && size_mb == 1024) {
+		mem = &mt41k256m16ha_125;
+		if (is_cpu_type(MXC_CPU_MX6Q))
+			calib = &mx6dq_256x32_mmdc_calib;
+		else
+			calib = &mx6sdl_256x32_mmdc_calib;
+		debug("4gB density\n");
+	} else if (width == 64 && size_mb == 512) {
+		mem = &mt41k64m16jt_125;
+		debug("1gB density\n");
 	} else if (width == 64 && size_mb == 1024) {
 		mem = &mt41k128m16jt_125;
 		if (is_cpu_type(MXC_CPU_MX6Q))
@@ -418,13 +469,6 @@ static void spl_dram_init(int width, int size_mb, int board_model)
 		else
 			calib = &mx6sdl_128x64_mmdc_calib;
 		debug("2gB density\n");
-	} else if (width == 32 && size_mb == 1024) {
-		mem = &mt41k256m16ha_125;
-		if (is_cpu_type(MXC_CPU_MX6Q))
-			calib = &mx6dq_256x32_mmdc_calib;
-		else
-			calib = &mx6sdl_256x32_mmdc_calib;
-		debug("4gB density\n");
 	} else if (width == 64 && size_mb == 2048) {
 		mem = &mt41k256m16ha_125;
 		if (is_cpu_type(MXC_CPU_MX6Q))