mirror of
https://github.com/AsahiLinux/u-boot
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cc66ebdeec
Reduce Auto Voltage Scaling VDD limit when core frequency is lower than 1600MHz. This reduces core voltage level from 1.25V to 1.15V, which saves power. The code is taken from Marvell's U-Boot 2013.01 revision 18.06. Reviewed-by: Chris Packham <judge.packham@gmail.com> Tested-by: Chris Packham <judge.packham@gmail.com> Signed-off-by: Baruch Siach <baruch@tkos.co.il> Signed-off-by: Stefan Roese <sr@denx.de>
181 lines
3.5 KiB
C
181 lines
3.5 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2009
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* Marvell Semiconductor <www.marvell.com>
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* Written-by: Prafulla Wadaskar <prafulla@marvell.com>
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*/
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#ifndef _MVEBU_CPU_H
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#define _MVEBU_CPU_H
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#include <asm/system.h>
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#ifndef __ASSEMBLY__
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#define MVEBU_REG_PCIE_DEVID (MVEBU_REG_PCIE_BASE + 0x00)
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#define MVEBU_REG_PCIE_REVID (MVEBU_REG_PCIE_BASE + 0x08)
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enum memory_bank {
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BANK0,
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BANK1,
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BANK2,
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BANK3
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};
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enum cpu_winen {
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CPU_WIN_DISABLE,
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CPU_WIN_ENABLE
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};
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enum cpu_target {
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CPU_TARGET_DRAM = 0x0,
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CPU_TARGET_DEVICEBUS_BOOTROM_SPI = 0x1,
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CPU_TARGET_ETH23 = 0x3,
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CPU_TARGET_PCIE02 = 0x4,
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CPU_TARGET_ETH01 = 0x7,
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CPU_TARGET_PCIE13 = 0x8,
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CPU_TARGET_DFX = 0x8,
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CPU_TARGET_SASRAM = 0x9,
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CPU_TARGET_SATA01 = 0xa, /* A38X */
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CPU_TARGET_NAND = 0xd,
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CPU_TARGET_SATA23_DFX = 0xe, /* A38X */
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};
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enum cpu_attrib {
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CPU_ATTR_SASRAM = 0x01,
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CPU_ATTR_DRAM_CS0 = 0x0e,
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CPU_ATTR_DRAM_CS1 = 0x0d,
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CPU_ATTR_DRAM_CS2 = 0x0b,
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CPU_ATTR_DRAM_CS3 = 0x07,
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CPU_ATTR_NANDFLASH = 0x2f,
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CPU_ATTR_SPIFLASH = 0x1e,
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CPU_ATTR_SPI0_CS0 = 0x1e,
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CPU_ATTR_SPI0_CS1 = 0x5e,
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CPU_ATTR_SPI1_CS2 = 0x9a,
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CPU_ATTR_BOOTROM = 0x1d,
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CPU_ATTR_PCIE_IO = 0xe0,
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CPU_ATTR_PCIE_MEM = 0xe8,
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CPU_ATTR_DEV_CS0 = 0x3e,
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CPU_ATTR_DEV_CS1 = 0x3d,
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CPU_ATTR_DEV_CS2 = 0x3b,
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CPU_ATTR_DEV_CS3 = 0x37,
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};
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enum {
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MVEBU_SOC_AXP,
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MVEBU_SOC_A375,
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MVEBU_SOC_A38X,
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MVEBU_SOC_MSYS,
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MVEBU_SOC_UNKNOWN,
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};
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#define MVEBU_SDRAM_SIZE_MAX 0xc0000000
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/*
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* Default Device Address MAP BAR values
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*/
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#define MBUS_PCI_MEM_BASE MVEBU_SDRAM_SIZE_MAX
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#define MBUS_PCI_MEM_SIZE (128 << 20)
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#define MBUS_PCI_IO_BASE 0xF1100000
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#define MBUS_PCI_IO_SIZE (64 << 10)
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#define MBUS_SPI_BASE 0xF4000000
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#define MBUS_SPI_SIZE (8 << 20)
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#define MBUS_DFX_BASE 0xF6000000
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#define MBUS_DFX_SIZE (1 << 20)
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#define MBUS_BOOTROM_BASE 0xF8000000
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#define MBUS_BOOTROM_SIZE (8 << 20)
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struct mbus_win {
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u32 base;
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u32 size;
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u8 target;
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u8 attr;
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};
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/*
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* System registers
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* Ref: Datasheet sec:A.28
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*/
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struct mvebu_system_registers {
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#if defined(CONFIG_ARMADA_375)
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u8 pad1[0x54];
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#else
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u8 pad1[0x60];
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#endif
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u32 rstoutn_mask; /* 0x60 */
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u32 sys_soft_rst; /* 0x64 */
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};
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/*
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* GPIO Registers
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* Ref: Datasheet sec:A.19
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*/
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struct kwgpio_registers {
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u32 dout;
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u32 oe;
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u32 blink_en;
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u32 din_pol;
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u32 din;
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u32 irq_cause;
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u32 irq_mask;
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u32 irq_level;
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};
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struct sar_freq_modes {
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u8 val;
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u8 ffc; /* Fabric Frequency Configuration */
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u32 p_clk;
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u32 nb_clk;
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u32 d_clk;
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};
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/* Needed for dynamic (board-specific) mbus configuration */
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extern struct mvebu_mbus_state mbus_state;
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/*
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* functions
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*/
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unsigned int mvebu_sdram_bar(enum memory_bank bank);
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unsigned int mvebu_sdram_bs(enum memory_bank bank);
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void mvebu_sdram_size_adjust(enum memory_bank bank);
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int mvebu_mbus_probe(struct mbus_win windows[], int count);
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int mvebu_soc_family(void);
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u32 mvebu_get_nand_clock(void);
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void return_to_bootrom(void);
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#ifndef CONFIG_DM_MMC
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int mv_sdh_init(unsigned long regbase, u32 max_clk, u32 min_clk, u32 quirks);
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#endif
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void get_sar_freq(struct sar_freq_modes *sar_freq);
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/*
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* Highspeed SERDES PHY config init, ported from bin_hdr
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* to mainline U-Boot
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*/
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int serdes_phy_config(void);
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/*
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* DDR3 init / training code ported from Marvell bin_hdr. Now
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* available in mainline U-Boot in:
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* drivers/ddr/marvell
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*/
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int ddr3_init(void);
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/* Auto Voltage Scaling */
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#if defined(CONFIG_ARMADA_38X) || defined(CONFIG_ARMADA_39X)
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void mv_avs_init(void);
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#else
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static inline void mv_avs_init(void) {}
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#endif
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/*
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* get_ref_clk
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*
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* return: reference clock in MHz (25 or 40)
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*/
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u32 get_ref_clk(void);
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#endif /* __ASSEMBLY__ */
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#endif /* _MVEBU_CPU_H */
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