Migrate all FMC defines from arch/arm/include/asm/arch-stm32f7/fmc.h to drivers/ram/stm32_sdram.c This will avoid to add an additionnal arch-stm32xx/fmc.h file when a new stm32 family soc will be introduced. Signed-off-by: Patrice Chotard <patrice.chotard@st.com> Reviewed-by: Vikas Manocha <vikas.manocha@st.com> Reviewed-by: Simon Glass <sjg@chromium.org>master
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/*
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* (C) Copyright 2013 |
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* Pavel Boldin, Emcraft Systems, paboldin@emcraft.com |
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* |
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* (C) Copyright 2015 |
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* Kamil Lulko, <kamil.lulko@gmail.com> |
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* |
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* SPDX-License-Identifier: GPL-2.0+ |
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*/ |
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#ifndef _MACH_FMC_H_ |
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#define _MACH_FMC_H_ |
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struct stm32_fmc_regs { |
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u32 sdcr1; /* Control register 1 */ |
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u32 sdcr2; /* Control register 2 */ |
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u32 sdtr1; /* Timing register 1 */ |
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u32 sdtr2; /* Timing register 2 */ |
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u32 sdcmr; /* Mode register */ |
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u32 sdrtr; /* Refresh timing register */ |
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u32 sdsr; /* Status register */ |
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}; |
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/*
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* FMC registers base |
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*/ |
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#define STM32_SDRAM_FMC ((struct stm32_fmc_regs *)SDRAM_FMC_BASE) |
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/* Control register SDCR */ |
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#define FMC_SDCR_RPIPE_SHIFT 13 /* RPIPE bit shift */ |
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#define FMC_SDCR_RBURST_SHIFT 12 /* RBURST bit shift */ |
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#define FMC_SDCR_SDCLK_SHIFT 10 /* SDRAM clock divisor shift */ |
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#define FMC_SDCR_WP_SHIFT 9 /* Write protection shift */ |
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#define FMC_SDCR_CAS_SHIFT 7 /* CAS latency shift */ |
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#define FMC_SDCR_NB_SHIFT 6 /* Number of banks shift */ |
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#define FMC_SDCR_MWID_SHIFT 4 /* Memory width shift */ |
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#define FMC_SDCR_NR_SHIFT 2 /* Number of row address bits shift */ |
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#define FMC_SDCR_NC_SHIFT 0 /* Number of col address bits shift */ |
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/* Timings register SDTR */ |
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#define FMC_SDTR_TMRD_SHIFT 0 /* Load mode register to active */ |
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#define FMC_SDTR_TXSR_SHIFT 4 /* Exit self-refresh time */ |
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#define FMC_SDTR_TRAS_SHIFT 8 /* Self-refresh time */ |
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#define FMC_SDTR_TRC_SHIFT 12 /* Row cycle delay */ |
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#define FMC_SDTR_TWR_SHIFT 16 /* Recovery delay */ |
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#define FMC_SDTR_TRP_SHIFT 20 /* Row precharge delay */ |
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#define FMC_SDTR_TRCD_SHIFT 24 /* Row-to-column delay */ |
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#define FMC_SDCMR_NRFS_SHIFT 5 |
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#define FMC_SDCMR_MODE_NORMAL 0 |
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#define FMC_SDCMR_MODE_START_CLOCK 1 |
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#define FMC_SDCMR_MODE_PRECHARGE 2 |
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#define FMC_SDCMR_MODE_AUTOREFRESH 3 |
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#define FMC_SDCMR_MODE_WRITE_MODE 4 |
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#define FMC_SDCMR_MODE_SELFREFRESH 5 |
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#define FMC_SDCMR_MODE_POWERDOWN 6 |
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#define FMC_SDCMR_BANK_1 BIT(4) |
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#define FMC_SDCMR_BANK_2 BIT(3) |
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#define FMC_SDCMR_MODE_REGISTER_SHIFT 9 |
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#define FMC_SDSR_BUSY BIT(5) |
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#define FMC_BUSY_WAIT() do { \ |
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__asm__ __volatile__ ("dsb" : : : "memory"); \
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while (STM32_SDRAM_FMC->sdsr & FMC_SDSR_BUSY) \
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; \
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} while (0) |
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#endif /* _MACH_FMC_H_ */ |
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