Add sdram ddr info print support, this would help to observe the sdram base parameters.
Here is sample print on LPDDR4, 50MHz channel 0 BW=32 Col=10 Bk=8 CS0 Row=15 CS1 Row=15 CS=2 Die BW=16
Signed-off-by: Jagan Teki jagan@amarulasolutions.com Signed-off-by: YouMin Chen cym@rock-chips.com --- .../include/asm/arch-rockchip/sdram_common.h | 7 ++++ drivers/ram/rockchip/sdram_debug.c | 40 +++++++++++++++++++ 2 files changed, 47 insertions(+)
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h index 0cb737d665..7d1372f033 100644 --- a/arch/arm/include/asm/arch-rockchip/sdram_common.h +++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h @@ -128,8 +128,15 @@ int dram_init(void); inline void sdram_print_dram_type(unsigned char dramtype) { } + +inline void sdram_print_ddr_info(struct sdram_cap_info *cap_info, + struct sdram_base_params *base) +{ +} #else void sdram_print_dram_type(unsigned char dramtype); +void sdram_print_ddr_info(struct sdram_cap_info *cap_info, + struct sdram_base_params *base); #endif /* CONFIG_RAM_ROCKCHIP_DEBUG */
#endif diff --git a/drivers/ram/rockchip/sdram_debug.c b/drivers/ram/rockchip/sdram_debug.c index c13e140fa5..69a6f94a73 100644 --- a/drivers/ram/rockchip/sdram_debug.c +++ b/drivers/ram/rockchip/sdram_debug.c @@ -32,3 +32,43 @@ void sdram_print_dram_type(unsigned char dramtype) break; } } + +void sdram_print_ddr_info(struct sdram_cap_info *cap_info, + struct sdram_base_params *base) +{ + u32 bg; + + bg = (cap_info->dbw == 0) ? 2 : 1; + + sdram_print_dram_type(base->dramtype); + + printascii(", "); + printdec(base->ddr_freq); + printascii("MHz\n"); + + printascii("BW="); + printdec(8 << cap_info->bw); + + printascii(" Col="); + printdec(cap_info->col); + + printascii(" Bk="); + printdec(0x1 << cap_info->bk); + if (base->dramtype == DDR4) { + printascii(" BG="); + printdec(1 << bg); + } + + printascii(" CS0 Row="); + printdec(cap_info->cs0_row); + if (cap_info->rank > 1) { + printascii(" CS1 Row="); + printdec(cap_info->cs1_row); + } + + printascii(" CS="); + printdec(cap_info->rank); + + printascii(" Die BW="); + printdec(8 << cap_info->dbw); +}