[U-Boot] [PATCH 7/9] imx: mx6: ddr init MMDC according to ddr_type

Peng Fan Peng.Fan at freescale.com
Mon Aug 17 05:29:24 CEST 2015


To i.MX6, DDR3 and LPDDR2 is supported, so rename function mx6_dram_cfg
to mx6_ddr3_cfg and the original mx6_dram_cfg function only is a wrapper.
The new reimplemented function mx6_dram_cfg only invokes mx6_ddr3_cfg
when ddr_type is for DDR3. Later we can use ddr_type to initialize
MMDC for LPDDR2.
Initialize ddr_type for different boards which enable SPL.

Signed-off-by: Peng Fan <Peng.Fan at freescale.com>
Cc: Stefano Babic <sbabic at denx.de>
Cc: Tim Harvey <tharvey at gateworks.com>
Cc: Stefan Roese <sr at denx.de>
Cc: Fabio Estevam <fabio.estevam at freescale.com>
---
 arch/arm/cpu/armv7/mx6/ddr.c                      | 14 +++++++++++++-
 arch/arm/include/asm/arch-mx6/mx6-ddr.h           |  2 +-
 board/barco/platinum/spl_picon.c                  |  1 +
 board/barco/platinum/spl_titanium.c               |  1 +
 board/freescale/mx6sabresd/mx6sabresd.c           |  1 +
 board/freescale/mx6sxsabresd/mx6sxsabresd.c       |  1 +
 board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c |  1 +
 board/gateworks/gw_ventana/gw_ventana_spl.c       |  1 +
 board/solidrun/mx6cuboxi/mx6cuboxi.c              |  1 +
 9 files changed, 21 insertions(+), 2 deletions(-)

diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c
index 3f23abf..a6bef60 100644
--- a/arch/arm/cpu/armv7/mx6/ddr.c
+++ b/arch/arm/cpu/armv7/mx6/ddr.c
@@ -348,7 +348,7 @@ void mx6sdl_dram_iocfg(unsigned width,
 		mmdc1->entry = value;					  \
 	} while (0)
 
-void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo,
+void mx6_ddr3_cfg(const struct mx6_ddr_sysinfo *sysinfo,
 		  const struct mx6_mmdc_calibration *calib,
 		  const struct mx6_ddr3_cfg *ddr3_cfg)
 {
@@ -655,3 +655,15 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo,
 	/* wait for auto-ZQ calibration to complete */
 	mdelay(1);
 }
+
+void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo,
+		  const struct mx6_mmdc_calibration *calib,
+		  const void *ddr_cfg)
+{
+	if (sysinfo->ddr_type == 0) {
+		mx6_ddr3_cfg(sysinfo, calib, ddr_cfg);
+	} else {
+		puts("Unsupported ddr type\n");
+		hang();
+	}
+}
diff --git a/arch/arm/include/asm/arch-mx6/mx6-ddr.h b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
index 49fc9e5..e3ba140 100644
--- a/arch/arm/include/asm/arch-mx6/mx6-ddr.h
+++ b/arch/arm/include/asm/arch-mx6/mx6-ddr.h
@@ -439,7 +439,7 @@ void mx6sl_dram_iocfg(unsigned width,
 /* configure mx6 mmdc registers */
 void mx6_dram_cfg(const struct mx6_ddr_sysinfo *,
 		  const struct mx6_mmdc_calibration *,
-		  const struct mx6_ddr3_cfg *);
+		  const void *);
 
 #endif /* CONFIG_SPL_BUILD */
 
diff --git a/board/barco/platinum/spl_picon.c b/board/barco/platinum/spl_picon.c
index f421c21..aac0948 100644
--- a/board/barco/platinum/spl_picon.c
+++ b/board/barco/platinum/spl_picon.c
@@ -137,6 +137,7 @@ static void spl_dram_init(int width)
 		.bi_on = 1,	/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,	/* DDR3 */
 	};
 
 	mx6sdl_dram_iocfg(width, &mx6sdl_ddr_ioregs, &mx6sdl_grp_ioregs);
diff --git a/board/barco/platinum/spl_titanium.c b/board/barco/platinum/spl_titanium.c
index 26fe26b..6a21155 100644
--- a/board/barco/platinum/spl_titanium.c
+++ b/board/barco/platinum/spl_titanium.c
@@ -140,6 +140,7 @@ static void spl_dram_init(int width)
 		.bi_on = 1,	/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,	/* DDR3 */
 	};
 
 	mx6dq_dram_iocfg(width, &mx6dq_ddr_ioregs, &mx6dq_grp_ioregs);
diff --git a/board/freescale/mx6sabresd/mx6sabresd.c b/board/freescale/mx6sabresd/mx6sabresd.c
index eb8a8b3..fabc5bb 100644
--- a/board/freescale/mx6sabresd/mx6sabresd.c
+++ b/board/freescale/mx6sabresd/mx6sabresd.c
@@ -824,6 +824,7 @@ static void spl_dram_init(void)
 		.bi_on = 1,	/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,	/* DDR3 */
 	};
 
 	mx6dq_dram_iocfg(64, &mx6_ddr_ioregs, &mx6_grp_ioregs);
diff --git a/board/freescale/mx6sxsabresd/mx6sxsabresd.c b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
index d58a79a..cf973e7 100644
--- a/board/freescale/mx6sxsabresd/mx6sxsabresd.c
+++ b/board/freescale/mx6sxsabresd/mx6sxsabresd.c
@@ -566,6 +566,7 @@ static void spl_dram_init(void)
 		.bi_on = 1,		/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,		/* DDR3 */
 	};
 
 	mx6sx_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
diff --git a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
index 8f712cb..a978503 100644
--- a/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
+++ b/board/freescale/mx6ul_14x14_evk/mx6ul_14x14_evk.c
@@ -598,6 +598,7 @@ static void spl_dram_init(void)
 		.bi_on = 1,		/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,		/* DDR3 */
 	};
 
 	mx6ul_dram_iocfg(mem_ddr.width, &mx6_ddr_ioregs, &mx6_grp_ioregs);
diff --git a/board/gateworks/gw_ventana/gw_ventana_spl.c b/board/gateworks/gw_ventana/gw_ventana_spl.c
index d4418e5..57b4f43 100644
--- a/board/gateworks/gw_ventana/gw_ventana_spl.c
+++ b/board/gateworks/gw_ventana/gw_ventana_spl.c
@@ -365,6 +365,7 @@ static void spl_dram_init(int width, int size_mb, int board_model)
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
 		.pd_fast_exit = 1, /* enable precharge power-down fast exit */
+		.ddr_type = 0,	/* DDR3 */
 	};
 
 	/*
diff --git a/board/solidrun/mx6cuboxi/mx6cuboxi.c b/board/solidrun/mx6cuboxi/mx6cuboxi.c
index 9b1ecf0..b4b290e 100644
--- a/board/solidrun/mx6cuboxi/mx6cuboxi.c
+++ b/board/solidrun/mx6cuboxi/mx6cuboxi.c
@@ -615,6 +615,7 @@ static void spl_dram_init(int width)
 		.bi_on = 1,	/* Bank interleaving enabled */
 		.sde_to_rst = 0x10,	/* 14 cycles, 200us (JEDEC default) */
 		.rst_to_cke = 0x23,	/* 33 cycles, 500us (JEDEC default) */
+		.ddr_type = 0,	/* DDR3 */
 	};
 
 	if (is_cpu_type(MXC_CPU_MX6D) || is_cpu_type(MXC_CPU_MX6Q))
-- 
1.8.4




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