From: Jernej Skrabec <jernej.skra...@siol.net>
Add some basic line delay values to be used with DDR3 DRAM chips on
some H6 TV boxes.
Taken from a register dump after boot0 initialised the DRAM.
Put them as the default delay values for DDR3 DRAM until we know better.
Signed-off-by: Jernej Skrabec <jernej.skra...@siol.net>
Signed-off-by: Andre Przywara <andre.przyw...@arm.com>
---
arch/arm/mach-sunxi/dram_sun50i_h6.c | 23 +++++++++++++++++------
1 file changed, 17 insertions(+), 6 deletions(-)
diff --git a/arch/arm/mach-sunxi/dram_sun50i_h6.c
b/arch/arm/mach-sunxi/dram_sun50i_h6.c
index 0436265bdb..5fe53bf463 100644
--- a/arch/arm/mach-sunxi/dram_sun50i_h6.c
+++ b/arch/arm/mach-sunxi/dram_sun50i_h6.c
@@ -597,17 +597,28 @@ unsigned long mctl_calc_size(struct dram_para *para)
return (1ULL << (para->cols + para->rows + 3)) * 4 * para->ranks;
}
-#define SUN50I_H6_DX_WRITE_DELAYS \
+#define SUN50I_H6_LPDDR3_DX_WRITE_DELAYS \
{{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 4, 4, 0 }, \
{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
-#define SUN50I_H6_DX_READ_DELAYS \
+#define SUN50I_H6_LPDDR3_DX_READ_DELAYS
\
{{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
{ 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }}
+#define SUN50I_H6_DDR3_DX_WRITE_DELAYS \
+ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
+#define SUN50I_H6_DDR3_DX_READ_DELAYS \
+ {{ 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 4, 4, 4, 4, 4, 4, 4, 4, 4, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }, \
+ { 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0, 0 }}
+
unsigned long sunxi_dram_init(void)
{
struct sunxi_mctl_com_reg * const mctl_com =
@@ -619,12 +630,12 @@ unsigned long sunxi_dram_init(void)
.rows = 14,
#ifdef CONFIG_SUNXI_DRAM_H6_LPDDR3
.type = SUNXI_DRAM_TYPE_LPDDR3,
- .dx_read_delays = SUN50I_H6_DX_READ_DELAYS,
- .dx_write_delays = SUN50I_H6_DX_WRITE_DELAYS,
+ .dx_read_delays = SUN50I_H6_LPDDR3_DX_READ_DELAYS,
+ .dx_write_delays = SUN50I_H6_LPDDR3_DX_WRITE_DELAYS,
#elif defined(CONFIG_SUNXI_DRAM_H6_DDR3_1333)
.type = SUNXI_DRAM_TYPE_DDR3,
- .dx_read_delays = SUN50I_H6_DX_READ_DELAYS,
- .dx_write_delays = SUN50I_H6_DX_WRITE_DELAYS,
+ .dx_read_delays = SUN50I_H6_DDR3_DX_READ_DELAYS,
+ .dx_write_delays = SUN50I_H6_DDR3_DX_WRITE_DELAYS,
#endif
};
--
2.14.5
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