On 2019/7/16 上午2:28, Jagan Teki wrote:
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
Thanks, - Kever
.../include/asm/arch-rockchip/sdram_common.h | 5 ++++ drivers/ram/rockchip/sdram_debug.c | 29 +++++++++++++++++++ 2 files changed, 34 insertions(+)
diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h index cfbb511843..b7549f5d8a 100644 --- a/arch/arm/include/asm/arch-rockchip/sdram_common.h +++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h @@ -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 diff --git a/drivers/ram/rockchip/sdram_debug.c b/drivers/ram/rockchip/sdram_debug.c index 19e9225c12..9cf662675b 100644 --- a/drivers/ram/rockchip/sdram_debug.c +++ b/drivers/ram/rockchip/sdram_debug.c @@ -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");- }
+}