[PATCH 45/92] ram: rockchip: debug: Add sdram_print_ddr_info

Jagan Teki
2019-06-11T14:50:48Z

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-dyjBcgdgk7Pe9wHmmfpqLFaTQe2KTcn/@public.gmane.org>
Signed-off-by: YouMin Chen <cym-TNX95d0MmH7DzftRWevZcw@public.gmane.org>
---
.../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 ebf4148b4d..3935733871 100644
--- a/arch/arm/include/asm/arch-rockchip/sdram_common.h
+++ b/arch/arm/include/asm/arch-rockchip/sdram_common.h
@@ -127,8 +127,15 @@ 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);
+}
--
2.18.0.321.gffc6fa0e3