1/* SPDX-License-Identifier: GPL-2.0+ */ 2/** 3 * Copyright 2011 Freescale Semiconductor 4 * Author: Mingkai Hu <Mingkai.hu@freescale.com> 5 * 6 * This file provides support for the ngPIXIS, a board-specific FPGA used on 7 * some Freescale reference boards. 8 */ 9 10/* 11 * CPLD register set. Feel free to add board-specific #ifdefs where necessary. 12 */ 13typedef struct cpld_data { 14 u8 cpld_ver; /* 0x0 - CPLD Major Revision Register */ 15 u8 cpld_ver_sub; /* 0x1 - CPLD Minor Revision Register */ 16 u8 pcba_ver; /* 0x2 - PCBA Revision Register */ 17 u8 system_rst; /* 0x3 - system reset register */ 18 u8 res0; /* 0x4 - not used */ 19 u8 sw_ctl_on; /* 0x5 - Switch Control Enable Register */ 20 u8 por_cfg; /* 0x6 - POR Control Register */ 21 u8 switch_strobe; /* 0x7 - Multiplexed pin Select Register */ 22 u8 jtag_sel; /* 0x8 - JTAG or AURORA Selection */ 23 u8 sdbank1_clk; /* 0x9 - SerDes Bank1 Reference clock */ 24 u8 sdbank2_clk; /* 0xa - SerDes Bank2 Reference clock */ 25 u8 fbank_sel; /* 0xb - Flash bank selection */ 26 u8 serdes_mux; /* 0xc - Multiplexed pin Select Register */ 27 u8 sw[1]; /* 0xd - SW2 Status */ 28 u8 system_rst_default; /* 0xe - system reset to default register */ 29 u8 sysclk_sw1; /* 0xf - sysclk configuration register */ 30} __attribute__ ((packed)) cpld_data_t; 31 32#define SERDES_MUX_LANE_6_MASK 0x2 33#define SERDES_MUX_LANE_6_SHIFT 1 34#define SERDES_MUX_LANE_A_MASK 0x1 35#define SERDES_MUX_LANE_A_SHIFT 0 36#define SERDES_MUX_LANE_C_MASK 0x4 37#define SERDES_MUX_LANE_C_SHIFT 2 38#define SERDES_MUX_LANE_D_MASK 0x8 39#define SERDES_MUX_LANE_D_SHIFT 3 40#define CPLD_SWITCH_BANK_ENABLE 0x40 41#define CPLD_SYSCLK_83 0x1 /* system clock 83.3MHz */ 42#define CPLD_SYSCLK_100 0x2 /* system clock 100MHz */ 43 44/* Pointer to the CPLD register set */ 45#define cpld ((cpld_data_t *)CPLD_BASE) 46 47/* The CPLD SW register that corresponds to board switch X, where x >= 1 */ 48#define CPLD_SW(x) (cpld->sw[(x) - 2]) 49 50u8 cpld_read(unsigned int reg); 51void cpld_write(unsigned int reg, u8 value); 52 53#define CPLD_READ(reg) cpld_read(offsetof(cpld_data_t, reg)) 54#define CPLD_WRITE(reg, value) cpld_write(offsetof(cpld_data_t, reg), value) 55