diff options
| author | Tom Rini <trini@konsulko.com> | 2019-01-17 19:12:55 -0500 |
|---|---|---|
| committer | Tom Rini <trini@konsulko.com> | 2019-01-17 19:12:55 -0500 |
| commit | f83ef0dac83110d20389eb71f09285f009f3d198 (patch) | |
| tree | e653de97fa1b8873704bd3d8afa557464c67e73c /board/mscc/common/spi.c | |
| parent | e964df1e2ae7b2c041a9d767f03ad2b72a3f2ac7 (diff) | |
| parent | 49f0b6bab919e6a9a509af841b43bbb49728dc45 (diff) | |
Merge tag 'mips-pull-2019-11-16' of git://git.denx.de/u-boot-mips
- MIPS: mscc: various enhancements for Luton and Ocelot platforms
- MIPS: mscc: added support for Jaguar2 platform
- MIPS: optimised SPL linker script
- MIPS: bcm6368: fix restart flow issues
- MIPS: fixed CONFIG_OF_EMBED warnings for all MIPS boards
- MIPS: mt7688: small fixes and enhancements
- mmc: compile-out write support if disabled
Diffstat (limited to 'board/mscc/common/spi.c')
| -rw-r--r-- | board/mscc/common/spi.c | 31 |
1 files changed, 31 insertions, 0 deletions
diff --git a/board/mscc/common/spi.c b/board/mscc/common/spi.c new file mode 100644 index 0000000000..0566fcba5c --- /dev/null +++ b/board/mscc/common/spi.c @@ -0,0 +1,31 @@ +// SPDX-License-Identifier: (GPL-2.0+ OR MIT) +/* + * Copyright (c) 2018 Microsemi Coprporation + */ + +#include <common.h> +#include <asm/io.h> +#include <spi.h> + +void external_cs_manage(struct udevice *dev, bool enable) +{ + u32 cs = spi_chip_select(dev); + /* IF_SI0_OWNER, select the owner of the SI interface + * Encoding: 0: SI Slave + * 1: SI Boot Master + * 2: SI Master Controller + */ + if (!enable) { + writel(ICPU_SW_MODE_SW_PIN_CTRL_MODE | + ICPU_SW_MODE_SW_SPI_CS(BIT(cs)), + BASE_CFG + ICPU_SW_MODE); + clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, + ICPU_GENERAL_CTRL_IF_SI_OWNER_M, + ICPU_GENERAL_CTRL_IF_SI_OWNER(2)); + } else { + writel(0, BASE_CFG + ICPU_SW_MODE); + clrsetbits_le32(BASE_CFG + ICPU_GENERAL_CTRL, + ICPU_GENERAL_CTRL_IF_SI_OWNER_M, + ICPU_GENERAL_CTRL_IF_SI_OWNER(1)); + } +} |