From ae51f41d14f548d494ac41e0d21137c5a4c3f59c Mon Sep 17 00:00:00 2001 From: Iru Cai Date: Wed, 30 Oct 2019 14:21:52 +0800 Subject: import the U-Boot code and make it compile --- arch/arm/include/asm/arch-mvebu/spi.h | 60 +++++++++++++++++++++++++++++++++++ 1 file changed, 60 insertions(+) create mode 100644 arch/arm/include/asm/arch-mvebu/spi.h (limited to 'arch/arm/include/asm/arch-mvebu') diff --git a/arch/arm/include/asm/arch-mvebu/spi.h b/arch/arm/include/asm/arch-mvebu/spi.h new file mode 100644 index 0000000..58b6c32 --- /dev/null +++ b/arch/arm/include/asm/arch-mvebu/spi.h @@ -0,0 +1,60 @@ +/* SPDX-License-Identifier: GPL-2.0+ */ +/* + * (C) Copyright 2009 + * Marvell Semiconductor + * Written-by: Prafulla Wadaskar + * + * Derived from drivers/spi/mpc8xxx_spi.c + */ + +#ifndef __KW_SPI_H__ +#define __KW_SPI_H__ + +/* SPI Registers on kirkwood SOC */ +struct kwspi_registers { + u32 ctrl; /* 0x10600 */ + u32 cfg; /* 0x10604 */ + u32 dout; /* 0x10608 */ + u32 din; /* 0x1060c */ + u32 irq_cause; /* 0x10610 */ + u32 irq_mask; /* 0x10614 */ + u32 timing1; /* 0x10618 */ + u32 timing2; /* 0x1061c */ + u32 dw_cfg; /* 0x10620 - Direct Write Configuration */ +}; + +/* Control Register */ +#define KWSPI_CSN_ACT (1 << 0) /* Activates serial memory interface */ +#define KWSPI_SMEMRDY (1 << 1) /* SerMem Data xfer ready */ +#define KWSPI_CS_SHIFT 2 /* chip select shift */ +#define KWSPI_CS_MASK 0x7 /* chip select mask */ + +/* Configuration Register */ +#define KWSPI_CLKPRESCL_MASK 0x1f +#define KWSPI_CLKPRESCL_MIN 0x12 +#define KWSPI_XFERLEN_1BYTE 0 +#define KWSPI_XFERLEN_2BYTE (1 << 5) +#define KWSPI_XFERLEN_MASK (1 << 5) +#define KWSPI_ADRLEN_1BYTE 0 +#define KWSPI_ADRLEN_2BYTE (1 << 8) +#define KWSPI_ADRLEN_3BYTE (2 << 8) +#define KWSPI_ADRLEN_4BYTE (3 << 8) +#define KWSPI_ADRLEN_MASK (3 << 8) +#define KWSPI_CPOL (1 << 11) +#define KWSPI_CPHA (1 << 12) +#define KWSPI_TXLSBF (1 << 13) +#define KWSPI_RXLSBF (1 << 14) + +/* Timing Parameters 1 Register */ +#define KW_SPI_TMISO_SAMPLE_OFFSET 6 +#define KW_SPI_TMISO_SAMPLE_MASK (0x3 << KW_SPI_TMISO_SAMPLE_OFFSET) +#define KW_SPI_TMISO_SAMPLE_1 (1 << KW_SPI_TMISO_SAMPLE_OFFSET) +#define KW_SPI_TMISO_SAMPLE_2 (2 << KW_SPI_TMISO_SAMPLE_OFFSET) + +#define KWSPI_IRQUNMASK 1 /* unmask SPI interrupt */ +#define KWSPI_IRQMASK 0 /* mask SPI interrupt */ +#define KWSPI_SMEMRDIRQ 1 /* SerMem data xfer ready irq */ + +#define KWSPI_TIMEOUT 10000 + +#endif /* __KW_SPI_H__ */ -- cgit v1.2.3