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author | Aaron Williams <awilliams@marvell.com> | 2020-12-11 19:05:24 +0300 |
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committer | Daniel Schwierzeck <daniel.schwierzeck@gmail.com> | 2021-04-23 22:02:12 +0300 |
commit | e7bc6eabd1c8b3322d7aa4188d5abde8e08aa712 (patch) | |
tree | 68c003aa983aa600ac1c2ed2b681ec6566dc9e03 /arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h | |
parent | 2d80cbfb0556eea18f0e3a10a1c0fa48282429d1 (diff) | |
download | u-boot-e7bc6eabd1c8b3322d7aa4188d5abde8e08aa712.tar.xz |
mips: octeon: Add misc cvmx-helper header files
Import misc cvmx-helper header files from 2013 U-Boot. They will be used
by the later added drivers to support PCIe and networking on the MIPS
Octeon II / III platforms.
Signed-off-by: Aaron Williams <awilliams@marvell.com>
Signed-off-by: Stefan Roese <sr@denx.de>
Diffstat (limited to 'arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h')
-rw-r--r-- | arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h | 73 |
1 files changed, 73 insertions, 0 deletions
diff --git a/arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h b/arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h new file mode 100644 index 0000000000..cae72f2172 --- /dev/null +++ b/arch/mips/mach-octeon/include/mach/cvmx-helper-spi.h @@ -0,0 +1,73 @@ +/* SPDX-License-Identifier: GPL-2.0 */ +/* + * Copyright (C) 2020 Marvell International Ltd. + * + * Functions for SPI initialization, configuration, + * and monitoring. + */ + +#ifndef __CVMX_HELPER_SPI_H__ +#define __CVMX_HELPER_SPI_H__ + +#include "cvmx-helper.h" + +/** + * @INTERNAL + * Probe a SPI interface and determine the number of ports + * connected to it. The SPI interface should still be down after + * this call. + * + * @param interface Interface to probe + * + * @return Number of ports on the interface. Zero to disable. + */ +int __cvmx_helper_spi_probe(int interface); +int __cvmx_helper_spi_enumerate(int interface); + +/** + * @INTERNAL + * Bringup and enable a SPI interface. After this call packet I/O + * should be fully functional. This is called with IPD enabled but + * PKO disabled. + * + * @param interface Interface to bring up + * + * @return Zero on success, negative on failure + */ +int __cvmx_helper_spi_enable(int interface); + +/** + * @INTERNAL + * Return the link state of an IPD/PKO port as returned by + * auto negotiation. The result of this function may not match + * Octeon's link config if auto negotiation has changed since + * the last call to cvmx_helper_link_set(). + * + * @param ipd_port IPD/PKO port to query + * + * @return Link state + */ +cvmx_helper_link_info_t __cvmx_helper_spi_link_get(int ipd_port); + +/** + * @INTERNAL + * Configure an IPD/PKO port for the specified link state. This + * function does not influence auto negotiation at the PHY level. + * The passed link state must always match the link state returned + * by cvmx_helper_link_get(). It is normally best to use + * cvmx_helper_link_autoconf() instead. + * + * @param ipd_port IPD/PKO port to configure + * @param link_info The new link state + * + * @return Zero on success, negative on failure + */ +int __cvmx_helper_spi_link_set(int ipd_port, cvmx_helper_link_info_t link_info); + +/** + * Sets the spi timeout in config data + * @param timeout value + */ +void cvmx_spi_config_set_timeout(int timeout); + +#endif |