From: Simon Holesch <simon.hole...@bshg.com>
Calibration values were calculated using the NXP tool
I.MX6ULL_DDR3_Script_Aid_V0.01.xlsx
Signed-off-by: Wolfgang Birkner <wolfgang.birk...@bshg.com>
Signed-off-by: Simon Holesch <simon.hole...@bshg.com>
Signed-off-by: Michael Trimarchi <mich...@amarulasolutions.com>
Signed-off-by: Dario Binacchi <dario.binac...@amarulasolutions.com>
---
Changes in v2:
- Use standard C comment style
board/bsh/imx6ulz_smm_m2/Makefile | 2 +-
board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c | 169 +++++++++++++++
board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c | 168 +++++++++++++++
board/bsh/imx6ulz_smm_m2/spl.c | 207 ++-----------------
board/bsh/imx6ulz_smm_m2/spl_mtypes.h | 26 +++
include/configs/imx6ulz_smm_m2.h | 6 +-
6 files changed, 388 insertions(+), 190 deletions(-)
create mode 100644 board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
create mode 100644 board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
create mode 100644 board/bsh/imx6ulz_smm_m2/spl_mtypes.h
diff --git a/board/bsh/imx6ulz_smm_m2/Makefile
b/board/bsh/imx6ulz_smm_m2/Makefile
index 59870419bdde..d448f4fc5215 100644
--- a/board/bsh/imx6ulz_smm_m2/Makefile
+++ b/board/bsh/imx6ulz_smm_m2/Makefile
@@ -2,5 +2,5 @@
# (C) Copyright 2021 Amarula Solutions B.V.
obj-y := imx6ulz_smm_m2.o
-obj-$(CONFIG_XPL_BUILD) += spl.o
+obj-$(CONFIG_XPL_BUILD) += spl.o ddr3l_timing_256m.o ddr3l_timing_128m.o
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
new file mode 100644
index 000000000000..66c3483adbf5
--- /dev/null
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_128m.c
@@ -0,0 +1,169 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "spl_mtypes.h"
+
+static const struct dram_cfg_param ddr_ddrc_cfg_128mb[] = {
+ /* IOMUX */
+
+ /* DDR IO Type: */
+ {0x020e04b4, 0x000C0000}, /* IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE */
+ {0x020e04ac, 0x00000000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRPKE */
+
+ /* Clock: */
+ {0x020e027c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDCLK_0 */
+
+ /* Address: */
+ {0x020e0250, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_CAS */
+ {0x020e024c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RAS */
+ {0x020e0490, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_ADDDS */
+
+ /* Control: */
+ {0x020e0288, 0x000C0028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RESET */
+ {0x020e0270, 0x00000000}, /*
+ * IOMUXC_SW_PAD_CTL_PAD_DRAM_SDBA2 -
DSE can be configured
+ * using Group Control Register
IOMUXC_SW_PAD_CTL_GRP_CTLDS
+ */
+
+ {0x020e0260, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT0 */
+ {0x020e0264, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT1 */
+ {0x020e04a0, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_CTLDS */
+
+ /* Data Strobes: */
+ {0x020e0494, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE_CTL */
+ {0x020e0280, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS0 */
+ {0x020e0284, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS1 */
+
+ /* Data: */
+ {0x020e04b0, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE */
+ {0x020e0498, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B0DS */
+ {0x020e04a4, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B1DS */
+
+ {0x020e0244, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM0 */
+ {0x020e0248, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM1 */
+
+ /*
+ *
=============================================================================
+ * DDR Controller Registers
+ *
=============================================================================
+ * Manufacturer:ISSI
+ * Device Part Number:IS43TR16640BL-125JBLI
+ * Clock Freq.: 400MHz
+ * Density per CS in Gb: 1
+ * Chip Selects used:1
+ * Number of Banks:8
+ * Row address: 13
+ * Column address: 10
+ * Data bus width16
+ *
=============================================================================
+ */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration
request bit
+ * during MMDC set up
+ */
+
+ /*
+ *
=============================================================================
+ * Calibration setup.
+ *
=============================================================================
+ */
+ {0x021b0800, 0xA1390003}, /*
+ * DDR_PHY_P0_MPZQHWCTRL, enable both
one-time & periodic
+ * HW ZQ calibration.
+ */
+
+ /*
+ * For target board, may need to run write leveling calibration to fine
tune
+ * these settings.
+ */
+ {0x021b080c, 0x00000000},
+
+ /* Read DQS Gating calibration */
+ {0x021b083c, 0x41480148}, /* MPDGCTRL0 PHY0 */
+
+ /* Read calibration */
+ {0x021b0848, 0x40403A3E}, /* MPRDDLCTL PHY0 */
+
+ /* Write calibration */
+ {0x021b0850, 0x4040362E}, /* MPWRDLCTL PHY0 */
+
+ /*
+ * Read data bit delay: 3 is the recommended default value, although
out of reset
+ * value is 0.
+ */
+ {0x021b081c, 0x33333333}, /* MMDC_MPRDDQBY0DL */
+ {0x021b0820, 0x33333333}, /* MMDC_MPRDDQBY1DL */
+
+ /* Write data bit delay: */
+ {0x021b082c, 0xF3333333}, /* MMDC_MPWRDQBY0DL */
+ {0x021b0830, 0xF3333333}, /* MMDC_MPWRDQBY1DL */
+
+ /* DQS&CLK Duty Cycle */
+ {0x021b08c0, 0x00944009}, /* [MMDC_MPDCCR] MMDC Duty Cycle
Control Register */
+
+ /* Complete calibration by forced measurement: */
+ {0x021b08b8, 0x00000800}, /* DDR_PHY_P0_MPMUR0, frc_msr */
+
+ /*
+ *
=============================================================================
+ * Calibration setup end
+ *
=============================================================================
+ */
+
+ /* MMDC init: */
+ {0x021b0004, 0x0002002D}, /* MMDC0_MDPDC */
+ {0x021b0008, 0x1B333030}, /* MMDC0_MDOTC */
+ {0x021b000c, 0x2B2F52F3}, /* MMDC0_MDCFG0 */
+ {0x021b0010, 0xB66D0B63}, /* MMDC0_MDCFG1 */
+ {0x021b0014, 0x01FF00DB}, /* MMDC0_MDCFG2 */
+
+ /*
+ * MDMISC: RALAT kept to the high level of 5.
+ * MDMISC: consider reducing RALAT if your 528MHz board design allow
that.
+ * Lower RALAT benefits:
+ * a. better operation at low frequency, for LPDDR2 freq < 100MHz,
change RALAT to 3
+ * b. Small performance improvement
+ */
+ {0x021b0018, 0x00211740}, /* MMDC0_MDMISC */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration
request bit during
+ * MMDC set up
+ */
+ {0x021b002c, 0x000026D2}, /* MMDC0_MDRWD */
+ {0x021b0030, 0x002F1023}, /* MMDC0_MDOR */
+ {0x021b0040, 0x00000043}, /* Chan0 CS0_END */
+ {0x021b0000, 0x82180000}, /* MMDC0_MDCTL */
+
+ {0x021b0890, 0x00400000}, /* MPPDCMPR2 */
+
+ /* Mode register writes */
+ {0x021b001c, 0x02808032}, /* MMDC0_MDSCR, MR2 write, CS0 */
+ {0x021b001c, 0x00008033}, /* MMDC0_MDSCR, MR3 write, CS0 */
+ {0x021b001c, 0x00048031}, /* MMDC0_MDSCR, MR1 write, CS0 */
+ {0x021b001c, 0x15208030}, /* MMDC0_MDSCR, MR0write, CS0 */
+ {0x021b001c, 0x04008040}, /*
+ * MMDC0_MDSCR, ZQ calibration command
sent to device
+ * on CS0
+ */
+
+ {0x021b0020, 0x00007800}, /* MMDC0_MDREF */
+
+ {0x021b0818, 0x00000227}, /* DDR_PHY_P0_MPODTCTRL */
+
+ {0x021b0004, 0x0002552D}, /* MMDC0_MDPDC now SDCTL power down
enabled */
+
+ {0x021b0404, 0x00011006}, /*
+ * MMDC0_MAPSR ADOPT power down enabled,
+ * MMDC will enter automatically to
self-refresh
+ * while the number of idle cycle
reached.
+ */
+
+ {0x021b001c, 0x00000000}, /*
+ * MMDC0_MDSCR, clear this register
(especially the
+ * configuration bit as initialization
is complete)
+ */
+};
+
+struct dram_timing_info bsh_dram_timing_128mb = {
+ .ddrc_cfg = ddr_ddrc_cfg_128mb,
+ .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_128mb),
+};
diff --git a/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
new file mode 100644
index 000000000000..0fe5b90a6732
--- /dev/null
+++ b/board/bsh/imx6ulz_smm_m2/ddr3l_timing_256m.c
@@ -0,0 +1,168 @@
+// SPDX-License-Identifier: GPL-2.0+
+
+#include "spl_mtypes.h"
+
+static const struct dram_cfg_param ddr_ddrc_cfg_256mb[] = {
+ /* IOMUX */
+
+ /* DDR IO Type: */
+ {0x020e04b4, 0x000C0000}, /* IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE */
+ {0x020e04ac, 0x00000000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRPKE */
+
+ /* Clock: */
+ {0x020e027c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDCLK_0 */
+
+ /* Address: */
+ {0x020e0250, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_CAS */
+ {0x020e024c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RAS */
+ {0x020e0490, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_ADDDS */
+
+ /* Control: */
+ {0x020e0288, 0x000C0028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RESET */
+ {0x020e0270, 0x00000000}, /*
+ * IOMUXC_SW_PAD_CTL_PAD_DRAM_SDBA2 -
DSE can be configured
+ * using Group Control Register:
IOMUXC_SW_PAD_CTL_GRP_CTLDS
+ */
+
+ {0x020e0260, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT0 */
+ {0x020e0264, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT1 */
+ {0x020e04a0, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_CTLDS */
+
+ /* Data Strobes: */
+ {0x020e0494, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE_CTL */
+ {0x020e0280, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS0 */
+ {0x020e0284, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS1 */
+
+ /* Data: */
+ {0x020e04b0, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE */
+ {0x020e0498, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B0DS */
+ {0x020e04a4, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B1DS */
+
+ {0x020e0244, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM0 */
+ {0x020e0248, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM1 */
+
+ /*
+ *
=============================================================================
+ * DDR Controller Registers
+ *
=============================================================================
+ * Manufacturer:ISSI
+ * Device Part Number:IS43TR16640BL-125JBLI
+ * Clock Freq.: 400MHz
+ * Density per CS in Gb: 2
+ * Chip Selects used:1
+ * Number of Banks:8
+ * Row address: 14
+ * Column address: 10
+ * Data bus width16
+ *
=============================================================================
+ */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration
request bit during
+ * MMDC set up
+ */
+
+ /*
+ *
=============================================================================
+ * Calibration setup.
+ *
=============================================================================
+ */
+ {0x021b0800, 0xA1390003}, /*
+ * DDR_PHY_P0_MPZQHWCTRL, enable both
one-time & periodic
+ * HW ZQ calibration
+ */
+
+ /*
+ * For target board, may need to run write leveling calibration to fine
tune these settings
+ */
+ {0x021b080c, 0x00050005},
+
+ /* Read DQS Gating calibration */
+ {0x021b083c, 0x01480144}, /* MPDGCTRL0 PHY0 */
+
+ /* Read calibration */
+ {0x021b0848, 0x4040363A}, /* MPRDDLCTL PHY0 */
+
+ /* Write calibration */
+ {0x021b0850, 0x40402E2C}, /* MPWRDLCTL PHY0 */
+
+ /*
+ * Read data bit delay: 3 is the reccommended default value, although
out of reset value
+ * is 0
+ */
+ {0x021b081c, 0x33333333}, /* MMDC_MPRDDQBY0DL */
+ {0x021b0820, 0x33333333}, /* MMDC_MPRDDQBY1DL */
+
+ /* Write data bit delay: */
+ {0x021b082c, 0xF3333333}, /* MMDC_MPWRDQBY0DL */
+ {0x021b0830, 0xF3333333}, /* MMDC_MPWRDQBY1DL */
+
+ /* DQS&CLK Duty Cycle */
+ {0x021b08c0, 0x00944009}, /* [MMDC_MPDCCR] MMDC Duty Cycle
Control Register */
+
+ /* Complete calibration by forced measurement: */
+ {0x021b08b8, 0x00000800}, /* DDR_PHY_P0_MPMUR0, frc_msr */
+
+ /*
+ *
=============================================================================
+ * Calibration setup end
+ *
=============================================================================
+ */
+
+ /* MMDC init: */
+ {0x021b0004, 0x0002002D}, /* MMDC0_MDPDC */
+ {0x021b0008, 0x1B333030}, /* MMDC0_MDOTC */
+ {0x021b000c, 0x3F435333}, /* MMDC0_MDCFG0 */
+ {0x021b0010, 0xB68E0B63}, /* MMDC0_MDCFG1 */
+ {0x021b0014, 0x01FF00DB}, /* MMDC0_MDCFG2 */
+
+ /*
+ * MDMISC: RALAT kept to the high level of 5.
+ * MDMISC: consider reducing RALAT if your 528MHz board design allow
that.
+ * Lower RALAT benefits:
+ * a. better operation at low frequency, for LPDDR2 freq < 100MHz,
change RALAT to 3
+ * b. Small performence improvment
+ */
+ {0x021b0018, 0x00211740}, /* MMDC0_MDMISC */
+ {0x021b001c, 0x00008000}, /*
+ * MMDC0_MDSCR, set the Configuration
request bit during
+ * MMDC set up
+ */
+ {0x021b002c, 0x000026D2}, /* MMDC0_MDRWD */
+ {0x021b0030, 0x00431023}, /* MMDC0_MDOR */
+ {0x021b0040, 0x00000047}, /* Chan0 CS0_END */
+ {0x021b0000, 0x83180000}, /* MMDC0_MDCTL */
+
+ {0x021b0890, 0x00400000}, /* MPPDCMPR2 */
+
+ /* Mode register writes */
+ {0x021b001c, 0x02808032}, /* MMDC0_MDSCR, MR2 write, CS0 */
+ {0x021b001c, 0x00008033}, /* MMDC0_MDSCR, MR3 write, CS0 */
+ {0x021b001c, 0x00048031}, /* MMDC0_MDSCR, MR1 write, CS0 */
+ {0x021b001c, 0x15208030}, /* MMDC0_MDSCR, MR0write, CS0 */
+ {0x021b001c, 0x04008040}, /*
+ * MMDC0_MDSCR, ZQ calibration command
sent to device
+ * on CS0
+ */
+
+ {0x021b0020, 0x00007800}, /* MMDC0_MDREF */
+
+ {0x021b0818, 0x00000227}, /* DDR_PHY_P0_MPODTCTRL */
+
+ {0x021b0004, 0x0002552D}, /* MMDC0_MDPDC now SDCTL power down
enabled */
+
+ {0x021b0404, 0x00011006}, /*
+ * MMDC0_MAPSR ADOPT power down
enabled, MMDC will enter
+ * automatically to self-refresh while
the number of idle
+ * cycle reached
+ */
+
+ {0x021b001c, 0x00000000}, /*
+ * MMDC0_MDSCR, clear this register
(especially the
+ * configuration bit as initialization
is complete)
+ */
+};
+
+struct dram_timing_info bsh_dram_timing_256mb = {
+ .ddrc_cfg = ddr_ddrc_cfg_256mb,
+ .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_256mb),
+};
diff --git a/board/bsh/imx6ulz_smm_m2/spl.c b/board/bsh/imx6ulz_smm_m2/spl.c
index 936e54662e98..85fd9e133eb3 100644
--- a/board/bsh/imx6ulz_smm_m2/spl.c
+++ b/board/bsh/imx6ulz_smm_m2/spl.c
@@ -17,6 +17,8 @@
#include <spl.h>
#include <asm/arch/mx6-ddr.h>
+#include "spl_mtypes.h"
+
#define UART_PAD_CTRL (PAD_CTL_PKE | PAD_CTL_PUE | \
PAD_CTL_PUS_100K_UP | PAD_CTL_SPEED_MED | \
PAD_CTL_DSE_40ohm | PAD_CTL_SRE_FAST | PAD_CTL_HYS)
@@ -31,190 +33,15 @@ static void setup_iomux_uart(void)
imx_iomux_v3_setup_multiple_pads(uart4_pads, ARRAY_SIZE(uart4_pads));
}
-struct dram_cfg_param {
- unsigned int reg;
- unsigned int val;
-};
-
-struct dram_timing_info {
- const struct dram_cfg_param *ddrc_cfg;
- unsigned int ddrc_cfg_num;
-};
-
-static const struct dram_cfg_param ddr_ddrc_cfg_128mb[] = {
- /* IOMUX */
-
- /* DDR IO Type: */
- {0x020e04b4, 0x000C0000}, /* IOMUXC_SW_PAD_CTL_GRP_DDR_TYPE */
- {0x020e04ac, 0x00000000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRPKE */
-
- /* Clock: */
- {0x020e027c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDCLK_0 */
-
- /* Address: */
- {0x020e0250, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_CAS */
- {0x020e024c, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RAS */
- {0x020e0490, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_ADDDS */
-
- /* Control: */
- {0x020e0288, 0x000C0028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_RESET */
-
- {0x020e0270, 0x00000000}, /*
- * IOMUXC_SW_PAD_CTL_PAD_DRAM_SDBA2 -
DSE can be configured
- * using Group Control Register:
IOMUXC_SW_PAD_CTL_GRP_CTLDS
- */
-
- {0x020e0260, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT0 */
- {0x020e0264, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDODT1 */
- {0x020e04a0, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_CTLDS */
-
- /* Data Strobes: */
- {0x020e0494, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE_CTL */
- {0x020e0280, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS0 */
- {0x020e0284, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_SDQS1 */
-
- /* Data: */
- {0x020e04b0, 0x00020000}, /* IOMUXC_SW_PAD_CTL_GRP_DDRMODE */
- {0x020e0498, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B0DS */
- {0x020e04a4, 0x00000028}, /* IOMUXC_SW_PAD_CTL_GRP_B1DS */
-
- {0x020e0244, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM0 */
- {0x020e0248, 0x00000028}, /* IOMUXC_SW_PAD_CTL_PAD_DRAM_DQM1 */
-
- /*
- *
=============================================================================
- * DDR Controller Registers
- *
=============================================================================
- * Manufacturer:ISSI
- * Device Part Number:IS43TR16640BL-125JBLI
- * Clock Freq.: 400MHz
- * Density per CS in Gb: 1
- * Chip Selects used:1
- * Number of Banks:8
- * Row address: 13
- * Column address: 10
- * Data bus width16
- *
=============================================================================
- */
-
- {0x021b001c, 0x00008000}, /*
- * MMDC0_MDSCR, set the Configuration request
bit during
- * MMDC set up
- */
-
- /*
- *
=============================================================================
- * Calibration setup
- *
=============================================================================
- */
-
- {0x021b0800, 0xA1390003}, /*
- * DDR_PHY_P0_MPZQHWCTRL, enable both
one-time & periodic
- * HW ZQ calibration.
- */
-
- /*
- * For target board, may need to run write leveling calibration to fine
tune these
- * settings.
- */
- {0x021b080c, 0x00000000},
-
- /* Read DQS Gating calibration */
- {0x021b083c, 0x41480148}, /* MPDGCTRL0 PHY0 */
-
- /* Read calibration */
- {0x021b0848, 0x40403A3E}, /* MPRDDLCTL PHY0 */
-
- /* Write calibration */
- {0x021b0850, 0x4040362E}, /* MPWRDLCTL PHY0 */
-
- /*
- * Read data bit delay: 3 is the recommended default value, although
out of reset
- * value is 0
- */
- {0x021b081c, 0x33333333}, /* MMDC_MPRDDQBY0DL */
- {0x021b0820, 0x33333333}, /* MMDC_MPRDDQBY1DL */
-
- /* Write data bit delay: */
- {0x021b082c, 0xF3333333}, /* MMDC_MPWRDQBY0DL */
- {0x021b0830, 0xF3333333}, /* MMDC_MPWRDQBY1DL */
-
- /* DQS&CLK Duty Cycle */
- {0x021b08c0, 0x00944009}, /* [MMDC_MPDCCR] MMDC Duty Cycle
Control Register */
-
- /* Complete calibration by forced measurement: */
- {0x021b08b8, 0x00000800}, /* DDR_PHY_P0_MPMUR0, frc_msr */
-
- /*
- *
=============================================================================
- * Calibration setup end
- *
=============================================================================
- */
-
- /* MMDC init: */
- {0x021b0004, 0x0002002D}, /* MMDC0_MDPDC */
- {0x021b0008, 0x1B333030}, /* MMDC0_MDOTC */
- {0x021b000c, 0x2B2F52F3}, /* MMDC0_MDCFG0 */
- {0x021b0010, 0xB66D0B63}, /* MMDC0_MDCFG1 */
- {0x021b0014, 0x01FF00DB}, /* MMDC0_MDCFG2 */
-
- /*
- * MDMISC: RALAT kept to the high level of 5.
- * MDMISC: consider reducing RALAT if your 528MHz board design allow
that.
- * Lower RALAT benefits:
- * a. better operation at low frequency, for LPDDR2 freq < 100MHz,
change RALAT to 3
- * b. Small performance improvement
- */
- {0x021b0018, 0x00211740}, /* MMDC0_MDMISC */
- {0x021b001c, 0x00008000}, /*
- * MMDC0_MDSCR, set the Configuration
request
- * bit during MMDC set up
- */
- {0x021b002c, 0x000026D2}, /* MMDC0_MDRWD */
- {0x021b0030, 0x002F1023}, /* MMDC0_MDOR */
- {0x021b0040, 0x00000043}, /* Chan0 CS0_END */
- {0x021b0000, 0x82180000}, /* MMDC0_MDCTL */
-
- {0x021b0890, 0x00400000}, /* MPPDCMPR2 */
-
- /* Mode register writes */
- {0x021b001c, 0x02808032}, /* MMDC0_MDSCR, MR2 write, CS0 */
- {0x021b001c, 0x00008033}, /* MMDC0_MDSCR, MR3 write, CS0 */
- {0x021b001c, 0x00048031}, /* MMDC0_MDSCR, MR1 write, CS0 */
- {0x021b001c, 0x15208030}, /* MMDC0_MDSCR, MR0write, CS0 */
- {0x021b001c, 0x04008040}, /*
- * MMDC0_MDSCR, ZQ calibration command
sent to
- * device on CS0
- */
- {0x021b0020, 0x00007800}, /* MMDC0_MDREF */
-
- {0x021b0818, 0x00000227}, /* DDR_PHY_P0_MPODTCTRL */
-
- {0x021b0004, 0x0002552D}, /* MMDC0_MDPDC now SDCTL power down
enabled */
-
- {0x021b0404, 0x00011006}, /*
- * MMDC0_MAPSR ADOPT power down enabled,
- * MMDC will enter automatically to
self-refresh
- * while the number of idle cycle
reached.
- */
-
- {0x021b001c, 0x00000000}, /*
- * MMDC0_MDSCR, clear this register
- * (especially the configuration bit as
initialization
- * is complete)
- */
-};
-
-static struct dram_timing_info dram_timing_128mb = {
- .ddrc_cfg = ddr_ddrc_cfg_128mb,
- .ddrc_cfg_num = ARRAY_SIZE(ddr_ddrc_cfg_128mb),
-};
-
static void ddr_cfg_write(const struct dram_timing_info *dram_timing_info)
{
int i;
const struct dram_cfg_param *ddrc_cfg = dram_timing_info->ddrc_cfg;
const int ddrc_cfg_num = dram_timing_info->ddrc_cfg_num;
+ struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
+
+ clrbits_le32(&mmdc0->mdctl, 1 << 31); /* clear SDE_0 */
+ clrbits_le32(&mmdc0->mdctl, 1 << 30); /* clear SDE_1 */
for (i = 0; i < ddrc_cfg_num; i++) {
debug("Writing 0x%x to register 0x%x\n", ddrc_cfg->val,
@@ -226,12 +53,22 @@ static void ddr_cfg_write(const struct dram_timing_info
*dram_timing_info)
static void spl_dram_init(void)
{
- struct mmdc_p_regs *mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR;
-
- clrbits_le32(&mmdc0->mdctl, 1 << 31); /* clear SDE_0 */
- clrbits_le32(&mmdc0->mdctl, 1 << 30); /* clear SDE_1 */
-
- ddr_cfg_write(&dram_timing_128mb);
+ /* Configure memory to maximum supported size for detection */
+ ddr_cfg_write(&bsh_dram_timing_256mb);
+
+ /* Detect memory physically present */
+ gd->ram_size = get_ram_size((void *)CFG_SYS_SDRAM_BASE, SZ_256M);
+
+ /* Reconfigure memory for actual detected size */
+ switch (gd->ram_size) {
+ case SZ_256M:
+ /* Already configured, nothing to do */
+ break;
+ case SZ_128M:
+ default:
+ ddr_cfg_write(&bsh_dram_timing_128mb);
+ break;
+ }
}
static void ccgr_init(void)
diff --git a/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
b/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
new file mode 100644
index 000000000000..2b517c316e0f
--- /dev/null
+++ b/board/bsh/imx6ulz_smm_m2/spl_mtypes.h
@@ -0,0 +1,26 @@
+/* SPDX-License-Identifier: GPL-2.0+ */
+/*
+ * Copyright 2025 BSH Hausgeraete GmbH
+ *
+ * Written by: Simon Holesch <simon.hole...@bshg.com>
+ */
+
+#ifndef SPL_MTYPES_H
+#define SPL_MTYPES_H
+
+#include <spl.h>
+
+struct dram_cfg_param {
+ unsigned int reg;
+ unsigned int val;
+};
+
+struct dram_timing_info {
+ const struct dram_cfg_param *ddrc_cfg;
+ unsigned int ddrc_cfg_num;
+};
+
+extern struct dram_timing_info bsh_dram_timing_128mb;
+extern struct dram_timing_info bsh_dram_timing_256mb;
+
+#endif /* SPL_MTYPES_H */
diff --git a/include/configs/imx6ulz_smm_m2.h b/include/configs/imx6ulz_smm_m2.h
index 44a3fc02e8ac..87aede218d16 100644
--- a/include/configs/imx6ulz_smm_m2.h
+++ b/include/configs/imx6ulz_smm_m2.h
@@ -60,10 +60,8 @@
BOOTENV
/* Physical Memory Map */
-#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR
-#define PHYS_SDRAM_SIZE SZ_128M
-
-#define CFG_SYS_SDRAM_BASE PHYS_SDRAM
+#define PHYS_SDRAM MMDC0_ARB_BASE_ADDR
+#define CFG_SYS_SDRAM_BASE PHYS_SDRAM
#define CFG_SYS_INIT_RAM_ADDR IRAM_BASE_ADDR
#define CFG_SYS_INIT_RAM_SIZE IRAM_SIZE
--
2.43.0
base-commit: eeb5ff1a468b2303efa9deb2483b5edbebb568c6
branch: bsh-202505-RAM
