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ram: rockchip: debug: Add sdram_print_ddr_info

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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>
Reviewed-by: Kever Yang <Kever.yang@rock-chips.com>
This commit is contained in:
Jagan Teki 2019-07-15 23:58:49 +05:30 committed by Kever Yang
parent 07112672a5
commit 07894f5aac
2 changed files with 47 additions and 0 deletions
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7
arch/arm/include/asm/arch-rockchip/sdram_common.h
View File

@ -97,8 +97,15 @@ 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

40
drivers/ram/rockchip/sdram_debug.c
View File

@ -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);
}