ram: rockchip: debug: Add sdram_print_ddr_info

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>

diff --git a/arch/arm/include/asm/arch-rockchip/sdram_common.h b/arch/arm/include/asm/arch-rockchip/sdram_common.h
index 171b233..cfbb511 100644 (file)
--- 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 c13e140..69a6f94 100644 (file)
--- 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);
+}