diff options
| -rw-r--r-- | board/compulab/imx8mm-cl-iot-gate/ddr/ddr.c | 24 | ||||
| -rw-r--r-- | board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h | 5 |
2 files changed, 26 insertions, 3 deletions
diff --git a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.c b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.c index 42dd0dbf18..5b93491923 100644 --- a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.c +++ b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.c @@ -22,6 +22,8 @@ #include <asm/mach-imx/gpio.h> #include "ddr.h" +#include <linux/delay.h> + static unsigned int lpddr4_mr_read(unsigned int mr_rank, unsigned int mr_addr) { unsigned int tmp; @@ -137,10 +139,11 @@ void spl_dram_init_compulab(void) (struct lpddr4_tcm_desc *)SPL_TCM_DATA; if (lpddr4_tcm_desc->sign != DEFAULT) { - /* if not in tcm scan mode */ + /* get ddr type from the eeprom if not in tcm scan mode */ + ddr_info = cl_eeprom_get_ddrinfo(); for (i = 0; i < ARRAY_SIZE(lpddr4_array); i++) { if (lpddr4_array[i].id == ddr_info && - lpddr4_array[i].subind == 0xff) { + lpddr4_array[i].subind == cl_eeprom_get_subind()) { ddr_found = 1; break; } @@ -198,10 +201,25 @@ void spl_dram_init_compulab(void) SPL_TCM_FINI; + if (ddr_found == 0) { + /* Update eeprom */ + cl_eeprom_set_ddrinfo(ddr_info_mrr); + mdelay(10); + ddr_info = cl_eeprom_get_ddrinfo(); + mdelay(10); + cl_eeprom_set_subind(lpddr4_array[i].subind); + /* make sure that the ddr_info has reached the eeprom */ + printf("DDRINFO(E): mr5-8 [ 0x%x ], read back\n", ddr_info); + if (ddr_info_mrr != ddr_info || cl_eeprom_get_subind() != lpddr4_array[i].subind) { + printf("DDRINFO(EEPROM): make sure that the eeprom is accessible\n"); + printf("DDRINFO(EEPROM): i2c dev 1; i2c md 0x51 0x40 0x50\n"); + } + } + /* Pass the dram size to th U-Boot through the tcm memory */ { /* To figure out what to store into the TCM buffer */ /* For debug purpouse only. To override the real memsize */ - unsigned int ddr_tcm_size = 0; + unsigned int ddr_tcm_size = cl_eeprom_get_osize(); if (ddr_tcm_size == 0 || ddr_tcm_size == -1) ddr_tcm_size = lpddr4_array[i].size; diff --git a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h index 59c1891159..f7d4fdc101 100644 --- a/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h +++ b/board/compulab/imx8mm-cl-iot-gate/ddr/ddr.h @@ -23,4 +23,9 @@ struct lpddr4_tcm_desc { unsigned int count; }; +u32 cl_eeprom_get_ddrinfo(void); +u32 cl_eeprom_set_ddrinfo(u32 ddrinfo); +u32 cl_eeprom_get_subind(void); +u32 cl_eeprom_set_subind(u32 subind); +u32 cl_eeprom_get_osize(void); #endif |