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ram: rk3399: debug: Add sdram_print_stride

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Add code to print the channel stride, this would help to
print the stride of associated channel.

Here is sample print on LPDDR4, 50MHz.
256B stride

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 23:58:51 +05:30 committed by Kever Yang
parent 79674a6278
commit cb13534abe
2 changed files with 34 additions and 0 deletions
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5
arch/arm/include/asm/arch-rockchip/sdram_common.h
View File

@ -102,10 +102,15 @@ inline void sdram_print_ddr_info(struct sdram_cap_info *cap_info,
struct sdram_base_params *base)
{
}
inline void sdram_print_stride(unsigned int stride)
{
}
#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);
void sdram_print_stride(unsigned int stride);
#endif /* CONFIG_RAM_ROCKCHIP_DEBUG */
#endif

29
drivers/ram/rockchip/sdram_debug.c
View File

@ -116,3 +116,32 @@ void sdram_print_ddr_info(struct sdram_cap_info *cap_info,
printdec(cap >> 20);
printascii("MB\n");
}
void sdram_print_stride(unsigned int stride)
{
switch (stride) {
case 0xc:
printf("128B stride\n");
break;
case 5:
case 9:
case 0xd:
case 0x11:
case 0x19:
printf("256B stride\n");
break;
case 0xa:
case 0xe:
case 0x12:
printf("512B stride\n");
break;
case 0xf:
printf("4K stride\n");
break;
case 0x1f:
printf("32MB + 256B stride\n");
break;
default:
printf("no stride\n");
}
}