mirror of
https://github.com/AsahiLinux/u-boot
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83d290c56f
When U-Boot started using SPDX tags we were among the early adopters and there weren't a lot of other examples to borrow from. So we picked the area of the file that usually had a full license text and replaced it with an appropriate SPDX-License-Identifier: entry. Since then, the Linux Kernel has adopted SPDX tags and they place it as the very first line in a file (except where shebangs are used, then it's second line) and with slightly different comment styles than us. In part due to community overlap, in part due to better tag visibility and in part for other minor reasons, switch over to that style. This commit changes all instances where we have a single declared license in the tag as both the before and after are identical in tag contents. There's also a few places where I found we did not have a tag and have introduced one. Signed-off-by: Tom Rini <trini@konsulko.com>
75 lines
1.8 KiB
C
75 lines
1.8 KiB
C
/* SPDX-License-Identifier: GPL-2.0+ */
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/*
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* (C) Copyright 2012 SAMSUNG Electronics
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* Padmavathi Venna <padma.v@samsung.com>
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*/
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#ifndef __ASM_ARCH_EXYNOS_COMMON_SPI_H_
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#define __ASM_ARCH_EXYNOS_COMMON_SPI_H_
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#ifndef __ASSEMBLY__
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/* SPI peripheral register map; padded to 64KB */
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struct exynos_spi {
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unsigned int ch_cfg; /* 0x00 */
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unsigned char reserved0[4];
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unsigned int mode_cfg; /* 0x08 */
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unsigned int cs_reg; /* 0x0c */
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unsigned char reserved1[4];
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unsigned int spi_sts; /* 0x14 */
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unsigned int tx_data; /* 0x18 */
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unsigned int rx_data; /* 0x1c */
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unsigned int pkt_cnt; /* 0x20 */
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unsigned char reserved2[4];
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unsigned int swap_cfg; /* 0x28 */
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unsigned int fb_clk; /* 0x2c */
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unsigned char padding[0xffd0];
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};
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#define EXYNOS_SPI_MAX_FREQ 50000000
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#define SPI_TIMEOUT_MS 10
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#define SF_READ_DATA_CMD 0x3
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/* SPI_CHCFG */
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#define SPI_CH_HS_EN (1 << 6)
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#define SPI_CH_RST (1 << 5)
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#define SPI_SLAVE_MODE (1 << 4)
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#define SPI_CH_CPOL_L (1 << 3)
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#define SPI_CH_CPHA_B (1 << 2)
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#define SPI_RX_CH_ON (1 << 1)
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#define SPI_TX_CH_ON (1 << 0)
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/* SPI_MODECFG */
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#define SPI_MODE_CH_WIDTH_WORD (0x2 << 29)
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#define SPI_MODE_BUS_WIDTH_WORD (0x2 << 17)
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/* SPI_CSREG */
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#define SPI_SLAVE_SIG_INACT (1 << 0)
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/* SPI_STS */
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#define SPI_ST_TX_DONE (1 << 25)
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#define SPI_FIFO_LVL_MASK 0x1ff
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#define SPI_TX_LVL_OFFSET 6
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#define SPI_RX_LVL_OFFSET 15
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/* Feedback Delay */
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#define SPI_CLK_BYPASS (0 << 0)
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#define SPI_FB_DELAY_90 (1 << 0)
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#define SPI_FB_DELAY_180 (2 << 0)
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#define SPI_FB_DELAY_270 (3 << 0)
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/* Packet Count */
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#define SPI_PACKET_CNT_EN (1 << 16)
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/* Swap config */
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#define SPI_TX_SWAP_EN (1 << 0)
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#define SPI_TX_BYTE_SWAP (1 << 2)
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#define SPI_TX_HWORD_SWAP (1 << 3)
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#define SPI_TX_BYTE_SWAP (1 << 2)
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#define SPI_RX_SWAP_EN (1 << 4)
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#define SPI_RX_BYTE_SWAP (1 << 6)
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#define SPI_RX_HWORD_SWAP (1 << 7)
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#endif /* __ASSEMBLY__ */
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#endif
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