diff options
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/dram_sun4i.c | 4 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/dram_sun8i_a23.c | 19 | ||||
| -rw-r--r-- | arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c | 4 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/dram_sun4i.h | 3 | ||||
| -rw-r--r-- | arch/arm/include/asm/arch-sunxi/dram_sun8i_a23.h | 1 | ||||
| -rw-r--r-- | board/sunxi/Kconfig | 25 | ||||
| -rw-r--r-- | board/sunxi/dram_sun4i_auto.c | 3 | ||||
| -rw-r--r-- | board/sunxi/dram_sun5i_auto.c | 3 |
8 files changed, 37 insertions, 25 deletions
diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun4i.c b/arch/arm/cpu/armv7/sunxi/dram_sun4i.c index c736fa3..f7b4915 100644 --- a/arch/arm/cpu/armv7/sunxi/dram_sun4i.c +++ b/arch/arm/cpu/armv7/sunxi/dram_sun4i.c @@ -508,7 +508,7 @@ static void mctl_ddr3_initialize(void) /* * Perform impedance calibration on the DRAM controller side of the wire. */ -static void mctl_set_impedance(u32 zq, u32 odt_en) +static void mctl_set_impedance(u32 zq, bool odt_en) { struct sunxi_dram_reg *dram = (struct sunxi_dram_reg *)SUNXI_DRAMC_BASE; u32 reg_val; @@ -556,7 +556,7 @@ static void mctl_set_impedance(u32 zq, u32 odt_en) clrbits_le32(&dram->zqcr0, DRAM_ZQCR0_ZCAL); /* Set I/O configure register */ - writel(DRAM_IOCR_ODT_EN(odt_en), &dram->iocr); + writel(DRAM_IOCR_ODT_EN, &dram->iocr); } static unsigned long dramc_init_helper(struct dram_para *para) diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a23.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a23.c index 3d7964d..165c052 100644 --- a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a23.c +++ b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a23.c @@ -26,12 +26,14 @@ #include <asm/arch/clock.h> #include <asm/arch/dram.h> #include <asm/arch/prcm.h> +#include <linux/kconfig.h> static const struct dram_para dram_para = { .clock = CONFIG_DRAM_CLK, .type = 3, .zq = CONFIG_DRAM_ZQ, - .odt_en = 1, + .odt_en = IS_ENABLED(CONFIG_DRAM_ODT_EN), + .odt_correction = CONFIG_DRAM_ODT_CORRECTION, .para1 = 0, /* not used (only used when tpr13 bit 31 is set */ .para2 = 0, /* not used (only used when tpr13 bit 31 is set */ .mr0 = 6736, @@ -97,7 +99,6 @@ static void mctl_init(u32 *bus_width) (struct sunxi_mctl_ctl_reg *)SUNXI_DRAM_CTL0_BASE; struct sunxi_mctl_phy_reg * const mctl_phy = (struct sunxi_mctl_phy_reg *)SUNXI_DRAM_PHY0_BASE; - int correction; if (dram_para.tpr13 & 0x20) writel(0x40b, &mctl_phy->dcr); @@ -138,7 +139,7 @@ static void mctl_init(u32 *bus_width) writel(0x01000081, &mctl_phy->dtcr); - if (dram_para.clock <= 240 || !(dram_para.odt_en & 0x01)) { + if (dram_para.clock <= 240 || !dram_para.odt_en) { clrbits_le32(&mctl_phy->dx0gcr, 0x600); clrbits_le32(&mctl_phy->dx1gcr, 0x600); } @@ -251,13 +252,11 @@ static void mctl_init(u32 *bus_width) } else *bus_width = 16; - correction = (dram_para.odt_en >> 8) & 0xff; - if (correction) { - if (dram_para.odt_en & 0x80000000) - correction = -correction; - - mctl_apply_odt_correction(&mctl_phy->dx0lcdlr1, correction); - mctl_apply_odt_correction(&mctl_phy->dx1lcdlr1, correction); + if (dram_para.odt_correction) { + mctl_apply_odt_correction(&mctl_phy->dx0lcdlr1, + dram_para.odt_correction); + mctl_apply_odt_correction(&mctl_phy->dx1lcdlr1, + dram_para.odt_correction); } mctl_await_completion(&mctl_ctl->statr, 0x01, 0x01); diff --git a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c index 979bb3c..ebba438 100644 --- a/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c +++ b/arch/arm/cpu/armv7/sunxi/dram_sun8i_a33.c @@ -14,12 +14,12 @@ #include <asm/arch/clock.h> #include <asm/arch/dram.h> #include <asm/arch/prcm.h> +#include <linux/kconfig.h> /* PLL runs at 2x dram-clk, controller runs at PLL / 4 (dram-clk / 2) */ #define DRAM_CLK_MUL 2 #define DRAM_CLK_DIV 4 #define DRAM_SIGMA_DELTA_ENABLE 1 -#define DRAM_ODT_EN 0 struct dram_para { u8 cs1; @@ -215,7 +215,7 @@ static int mctl_channel_init(struct dram_para *para) clrbits_le32(&mctl_ctl->pgcr0, 0x3f << 0); /* Set ODT */ - if ((CONFIG_DRAM_CLK > 400) && DRAM_ODT_EN) { + if ((CONFIG_DRAM_CLK > 400) && IS_ENABLED(CONFIG_DRAM_ODT_EN)) { setbits_le32(DXnGCR0(0), 0x3 << 9); setbits_le32(DXnGCR0(1), 0x3 << 9); } else { diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun4i.h b/arch/arm/include/asm/arch-sunxi/dram_sun4i.h index 40c385a..139e336 100644 --- a/arch/arm/include/asm/arch-sunxi/dram_sun4i.h +++ b/arch/arm/include/asm/arch-sunxi/dram_sun4i.h @@ -164,8 +164,7 @@ struct dram_para { #define DRAM_ZQSR_ZDONE (1 << 31) /* ZQ calibration completion flag */ -#define DRAM_IOCR_ODT_EN(n) ((((n) & 0x3) << 30) | ((n) & 0x3) << 0) -#define DRAM_IOCR_ODT_EN_MASK DRAM_IOCR_ODT_EN(0x3) +#define DRAM_IOCR_ODT_EN ((3 << 30) | (3 << 0)) #define DRAM_MR_BURST_LENGTH(n) (((n) & 0x7) << 0) #define DRAM_MR_BURST_LENGTH_MASK DRAM_MR_BURST_LENGTH(0x7) diff --git a/arch/arm/include/asm/arch-sunxi/dram_sun8i_a23.h b/arch/arm/include/asm/arch-sunxi/dram_sun8i_a23.h index 06adee2..316a333 100644 --- a/arch/arm/include/asm/arch-sunxi/dram_sun8i_a23.h +++ b/arch/arm/include/asm/arch-sunxi/dram_sun8i_a23.h @@ -19,6 +19,7 @@ struct dram_para { u32 type; u32 zq; u32 odt_en; + s32 odt_correction; u32 para1; u32 para2; u32 mr0; diff --git a/board/sunxi/Kconfig b/board/sunxi/Kconfig index 012f9a4..a6bbf6e 100644 --- a/board/sunxi/Kconfig +++ b/board/sunxi/Kconfig @@ -91,6 +91,13 @@ config DRAM_ZQ ---help--- Set the dram zq value. +config DRAM_ODT_EN + bool "sunxi dram odt enable" + default n if !MACH_SUN8I_A23 + default y if MACH_SUN8I_A23 + ---help--- + Select this to enable dram odt (on die termination). + if MACH_SUN4I || MACH_SUN5I || MACH_SUN7I config DRAM_EMR1 int "sunxi dram emr1 value" @@ -99,13 +106,6 @@ config DRAM_EMR1 ---help--- Set the dram controller emr1 value. -config DRAM_ODT_EN - int "sunxi dram odt_en value" - default 0 - ---help--- - Set the dram controller odt_en parameter. This can be used to - enable/disable the ODT feature. - config DRAM_TPR3 hex "sunxi dram tpr3 value" default 0 @@ -166,6 +166,17 @@ endchoice endif +if MACH_SUN8I_A23 +config DRAM_ODT_CORRECTION + int "sunxi dram odt correction value" + default 0 + ---help--- + Set the dram odt correction value (range -255 - 255). In allwinner + fex files, this option is found in bits 8-15 of the u32 odt_en variable + in the [dram] section. When bit 31 of the odt_en variable is set + then the correction is negative. Usually the value for this is 0. +endif + config SYS_CLK_FREQ default 912000000 if MACH_SUN7I default 1008000000 if MACH_SUN4I || MACH_SUN5I || MACH_SUN6I || MACH_SUN8I diff --git a/board/sunxi/dram_sun4i_auto.c b/board/sunxi/dram_sun4i_auto.c index 09e0c9a..149bb51 100644 --- a/board/sunxi/dram_sun4i_auto.c +++ b/board/sunxi/dram_sun4i_auto.c @@ -1,5 +1,6 @@ #include <common.h> #include <asm/arch/dram.h> +#include <linux/kconfig.h> static struct dram_para dram_para = { .clock = CONFIG_DRAM_CLK, @@ -9,7 +10,7 @@ static struct dram_para dram_para = { .io_width = 0, .bus_width = 0, .zq = CONFIG_DRAM_ZQ, - .odt_en = CONFIG_DRAM_ODT_EN, + .odt_en = IS_ENABLED(CONFIG_DRAM_ODT_EN), .size = 0, #ifdef CONFIG_DRAM_TIMINGS_VENDOR_MAGIC .cas = 6, diff --git a/board/sunxi/dram_sun5i_auto.c b/board/sunxi/dram_sun5i_auto.c index 660b18e..596a206 100644 --- a/board/sunxi/dram_sun5i_auto.c +++ b/board/sunxi/dram_sun5i_auto.c @@ -2,6 +2,7 @@ #include <common.h> #include <asm/arch/dram.h> +#include <linux/kconfig.h> static struct dram_para dram_para = { .clock = CONFIG_DRAM_CLK, @@ -12,7 +13,7 @@ static struct dram_para dram_para = { .io_width = 0, .bus_width = 0, .zq = CONFIG_DRAM_ZQ, - .odt_en = CONFIG_DRAM_ODT_EN, + .odt_en = IS_ENABLED(CONFIG_DRAM_ODT_EN), .size = 0, #ifdef CONFIG_DRAM_TIMINGS_VENDOR_MAGIC .cas = 9, |