1. Define two structures mx6ul_iomux_ddr_regs and mx6ul_iomux_grp_regs. 2. Add a new function mx6ul_dram_iocfg to configure dram io. 3. Refactor MMDC1 macro, discard "#ifdef CONFIG_MX6SX". Since only mmdc0 channel exists on i.MX6SX/UL, redefine MMDC1 macro support runtime check, but not hardcoding #ifdef macros. 4. Introduce mx6ul-ddr.h, which includes the register address for DRAM IO configuration.
Signed-off-by: Peng Fan Peng.Fan@freescale.com ---
Changes v2: new patch
arch/arm/cpu/armv7/mx6/ddr.c | 61 ++++++++++++++++++++++++++----- arch/arm/include/asm/arch-mx6/mx6-ddr.h | 45 +++++++++++++++++++++++ arch/arm/include/asm/arch-mx6/mx6ul-ddr.h | 45 +++++++++++++++++++++++ 3 files changed, 141 insertions(+), 10 deletions(-) create mode 100644 arch/arm/include/asm/arch-mx6/mx6ul-ddr.h
diff --git a/arch/arm/cpu/armv7/mx6/ddr.c b/arch/arm/cpu/armv7/mx6/ddr.c index 86c8354..5abbcb8 100644 --- a/arch/arm/cpu/armv7/mx6/ddr.c +++ b/arch/arm/cpu/armv7/mx6/ddr.c @@ -71,6 +71,50 @@ void mx6sx_dram_iocfg(unsigned width, } #endif
+#ifdef CONFIG_MX6UL +void mx6ul_dram_iocfg(unsigned width, + const struct mx6ul_iomux_ddr_regs *ddr, + const struct mx6ul_iomux_grp_regs *grp) +{ + struct mx6ul_iomux_ddr_regs *mx6_ddr_iomux; + struct mx6ul_iomux_grp_regs *mx6_grp_iomux; + + mx6_ddr_iomux = (struct mx6ul_iomux_ddr_regs *)MX6UL_IOM_DDR_BASE; + mx6_grp_iomux = (struct mx6ul_iomux_grp_regs *)MX6UL_IOM_GRP_BASE; + + /* DDR IO TYPE */ + writel(grp->grp_ddr_type, &mx6_grp_iomux->grp_ddr_type); + writel(grp->grp_ddrpke, &mx6_grp_iomux->grp_ddrpke); + + /* CLOCK */ + writel(ddr->dram_sdclk_0, &mx6_ddr_iomux->dram_sdclk_0); + + /* ADDRESS */ + writel(ddr->dram_cas, &mx6_ddr_iomux->dram_cas); + writel(ddr->dram_ras, &mx6_ddr_iomux->dram_ras); + writel(grp->grp_addds, &mx6_grp_iomux->grp_addds); + + /* Control */ + writel(ddr->dram_reset, &mx6_ddr_iomux->dram_reset); + writel(ddr->dram_sdba2, &mx6_ddr_iomux->dram_sdba2); + writel(ddr->dram_odt0, &mx6_ddr_iomux->dram_odt0); + writel(ddr->dram_odt1, &mx6_ddr_iomux->dram_odt1); + writel(grp->grp_ctlds, &mx6_grp_iomux->grp_ctlds); + + /* Data Strobes */ + writel(grp->grp_ddrmode_ctl, &mx6_grp_iomux->grp_ddrmode_ctl); + writel(ddr->dram_sdqs0, &mx6_ddr_iomux->dram_sdqs0); + writel(ddr->dram_sdqs1, &mx6_ddr_iomux->dram_sdqs1); + + /* Data */ + writel(grp->grp_ddrmode, &mx6_grp_iomux->grp_ddrmode); + writel(grp->grp_b0ds, &mx6_grp_iomux->grp_b0ds); + writel(grp->grp_b1ds, &mx6_grp_iomux->grp_b1ds); + writel(ddr->dram_dqm0, &mx6_ddr_iomux->dram_dqm0); + writel(ddr->dram_dqm1, &mx6_ddr_iomux->dram_dqm1); +} +#endif + #if defined(CONFIG_MX6QDL) || defined(CONFIG_MX6Q) || defined(CONFIG_MX6D) /* Configure MX6DQ mmdc iomux */ void mx6dq_dram_iocfg(unsigned width, @@ -243,19 +287,17 @@ void mx6sdl_dram_iocfg(unsigned width, */ #define MR(val, ba, cmd, cs1) \ ((val << 16) | (1 << 15) | (cmd << 4) | (cs1 << 3) | ba) -#ifdef CONFIG_MX6SX -#define MMDC1(entry, value) do {} while (0) -#else -#define MMDC1(entry, value) do { mmdc1->entry = value; } while (0) -#endif +#define MMDC1(entry, value) do { \ + if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL)) \ + mmdc1->entry = value; \ + } while (0) + void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo, const struct mx6_mmdc_calibration *calib, const struct mx6_ddr3_cfg *ddr3_cfg) { volatile struct mmdc_p_regs *mmdc0; -#ifndef CONFIG_MX6SX volatile struct mmdc_p_regs *mmdc1; -#endif u32 val; u8 tcke, tcksrx, tcksre, txpdll, taofpd, taonpd, trrd; u8 todtlon, taxpd, tanpd, tcwl, txp, tfaw, tcl; @@ -270,9 +312,8 @@ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *sysinfo, u16 mem_speed = ddr3_cfg->mem_speed;
mmdc0 = (struct mmdc_p_regs *)MMDC_P0_BASE_ADDR; -#ifndef CONFIG_MX6SX - mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR; -#endif + if (!is_cpu_type(MXC_CPU_MX6SX) && !is_cpu_type(MXC_CPU_MX6UL)) + mmdc1 = (struct mmdc_p_regs *)MMDC_P1_BASE_ADDR;
/* Limit mem_speed for MX6D/MX6Q */ if (is_cpu_type(MXC_CPU_MX6Q) || is_cpu_type(MXC_CPU_MX6D)) { diff --git a/arch/arm/include/asm/arch-mx6/mx6-ddr.h b/arch/arm/include/asm/arch-mx6/mx6-ddr.h index c49aa62..7bfbdc3 100644 --- a/arch/arm/include/asm/arch-mx6/mx6-ddr.h +++ b/arch/arm/include/asm/arch-mx6/mx6-ddr.h @@ -16,7 +16,11 @@ #ifdef CONFIG_MX6SX #include "mx6sx-ddr.h" #else +#ifdef CONFIG_MX6UL +#include "mx6ul-ddr.h" +#else #error "Please select cpu" +#endif /* CONFIG_MX6UL */ #endif /* CONFIG_MX6SX */ #endif /* CONFIG_MX6DL or CONFIG_MX6S */ #endif /* CONFIG_MX6Q */ @@ -62,6 +66,44 @@ struct mmdc_p_regs { u32 mpmur0; };
+#define MX6UL_IOM_DDR_BASE 0x020e0200 +struct mx6ul_iomux_ddr_regs { + u32 res1[17]; + u32 dram_dqm0; + u32 dram_dqm1; + u32 dram_ras; + u32 dram_cas; + u32 dram_cs0; + u32 dram_cs1; + u32 dram_sdwe_b; + u32 dram_odt0; + u32 dram_odt1; + u32 dram_sdba0; + u32 dram_sdba1; + u32 dram_sdba2; + u32 dram_sdcke0; + u32 dram_sdcke1; + u32 dram_sdclk_0; + u32 dram_sdqs0; + u32 dram_sdqs1; + u32 dram_reset; +}; + +#define MX6UL_IOM_GRP_BASE 0x020e0400 +struct mx6ul_iomux_grp_regs { + u32 res1[36]; + u32 grp_addds; + u32 grp_ddrmode_ctl; + u32 grp_b0ds; + u32 grp_ddrpk; + u32 grp_ctlds; + u32 grp_b1ds; + u32 grp_ddrhys; + u32 grp_ddrpke; + u32 grp_ddrmode; + u32 grp_ddr_type; +}; + #define MX6SX_IOM_DDR_BASE 0x020e0200 struct mx6sx_iomux_ddr_regs { u32 res1[59]; @@ -290,6 +332,9 @@ void mx6sdl_dram_iocfg(unsigned width, void mx6sx_dram_iocfg(unsigned width, const struct mx6sx_iomux_ddr_regs *, const struct mx6sx_iomux_grp_regs *); +void mx6ul_dram_iocfg(unsigned width, + const struct mx6ul_iomux_ddr_regs *, + const struct mx6ul_iomux_grp_regs *);
/* configure mx6 mmdc registers */ void mx6_dram_cfg(const struct mx6_ddr_sysinfo *, diff --git a/arch/arm/include/asm/arch-mx6/mx6ul-ddr.h b/arch/arm/include/asm/arch-mx6/mx6ul-ddr.h new file mode 100644 index 0000000..ed11c4b --- /dev/null +++ b/arch/arm/include/asm/arch-mx6/mx6ul-ddr.h @@ -0,0 +1,45 @@ +/* + * Copyright (C) 2015 Freescale Semiconductor, Inc. + * + * SPDX-License-Identifier: GPL-2.0+ + */ + +#ifndef __ASM_ARCH_MX6UL_DDR_H__ +#define __ASM_ARCH_MX6UL_DDR_H__ + +#ifndef CONFIG_MX6UL +#error "wrong CPU" +#endif + +#define MX6_IOM_DRAM_DQM0 0x020e0244 +#define MX6_IOM_DRAM_DQM1 0x020e0248 + +#define MX6_IOM_DRAM_RAS 0x020e024c +#define MX6_IOM_DRAM_CAS 0x020e0250 +#define MX6_IOM_DRAM_CS0 0x020e0254 +#define MX6_IOM_DRAM_CS1 0x020e0258 +#define MX6_IOM_DRAM_SDWE_B 0x020e025c +#define MX6_IOM_DRAM_SDODT0 0x020e0260 +#define MX6_IOM_DRAM_SDODT1 0x020e0264 +#define MX6_IOM_DRAM_SDBA0 0x020e0268 +#define MX6_IOM_DRAM_SDBA1 0x020e026c +#define MX6_IOM_DRAM_SDBA2 0x020e0270 +#define MX6_IOM_DRAM_SDCKE0 0x020e0274 +#define MX6_IOM_DRAM_SDCKE1 0x020e0278 +#define MX6_IOM_DRAM_SDCLK_0 0x020e027c +#define MX6_IOM_DRAM_SDQS0 0x020e0280 +#define MX6_IOM_DRAM_SDQS1 0x020e0284 +#define MX6_IOM_DRAM_RESET 0x020e0288 + +#define MX6_IOM_GRP_ADDDS 0x020e0490 +#define MX6_IOM_DDRMODE_CTL 0x020e0494 +#define MX6_IOM_GRP_B0DS 0x020e0498 +#define MX6_IOM_GRP_DDRPK 0x020e049c +#define MX6_IOM_GRP_CTLDS 0x020e04a0 +#define MX6_IOM_GRP_B1DS 0x020e04a4 +#define MX6_IOM_GRP_DDRHYS 0x020e04a8 +#define MX6_IOM_GRP_DDRPKE 0x020e04ac +#define MX6_IOM_GRP_DDRMODE 0x020e04b0 +#define MX6_IOM_GRP_DDR_TYPE 0x020e04b4 + +#endif /*__ASM_ARCH_MX6SX_DDR_H__ */