From: Jernej Skrabec <jernej.skrabec@siol.net>
Date: Mon, 15 Jul 2019 01:27:09 +0000 (+0100)
Subject: sunxi: H6: Add DDR3 DRAM delay values
X-Git-Tag: v2019.10-rc1~27^2~5
X-Git-Url: https://git.librecmc.org/?a=commitdiff_plain;h=0824384bfb392898b0e8edf2b9fc6555a8dd6702;p=oweals%2Fu-boot.git

sunxi: H6: Add DDR3 DRAM delay values

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.skrabec@siol.net>
Signed-off-by: Andre Przywara <andre.przywara@arm.com>
Reviewed-by: Jagan Teki <jagan@amarulasolutions.com>
---

diff --git a/arch/arm/mach-sunxi/dram_sun50i_h6.c b/arch/arm/mach-sunxi/dram_sun50i_h6.c
index 17649ffbf9..2a8275da3a 100644
--- a/arch/arm/mach-sunxi/dram_sun50i_h6.c
+++ b/arch/arm/mach-sunxi/dram_sun50i_h6.c
@@ -594,17 +594,28 @@ 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 =
@@ -616,12 +627,12 @@ 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
 	};