On 2019/7/16 上午2:28, Jagan Teki wrote:
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
Thanks, - Kever
.../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 171b233f95..cfbb511843 100644 --- a/arch/arm/include/asm/arch-rockchip/sdram_common.h +++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h @@ -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
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);
+}