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https://github.com/AuxXxilium/linux_dsm_epyc7002.git
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cc2d87bb83
Support 4 PTP programmable pins with only PTP_PF_PEROUT function for now. The PTP_PF_EXTTS function will be supported in the future, and it should be implemented separately for Felix and Ocelot, because of different hardware interrupt implementation in them. Since the hardware is not able to support absolute start time, the periodic clock request only allows start time 0 0. But nsec could be accepted for PPS case for phase adjustment. Signed-off-by: Yangbo Lu <yangbo.lu@nxp.com> Signed-off-by: David S. Miller <davem@davemloft.net>
59 lines
1.7 KiB
C
59 lines
1.7 KiB
C
/* SPDX-License-Identifier: (GPL-2.0 OR MIT) */
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/*
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* Microsemi Ocelot Switch driver
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*
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* License: Dual MIT/GPL
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* Copyright (c) 2017 Microsemi Corporation
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* Copyright 2020 NXP
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*/
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#ifndef _MSCC_OCELOT_PTP_H_
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#define _MSCC_OCELOT_PTP_H_
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#include <linux/ptp_clock_kernel.h>
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#include <soc/mscc/ocelot.h>
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#define PTP_PIN_CFG_RSZ 0x20
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#define PTP_PIN_TOD_SEC_MSB_RSZ PTP_PIN_CFG_RSZ
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#define PTP_PIN_TOD_SEC_LSB_RSZ PTP_PIN_CFG_RSZ
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#define PTP_PIN_TOD_NSEC_RSZ PTP_PIN_CFG_RSZ
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#define PTP_PIN_WF_HIGH_PERIOD_RSZ PTP_PIN_CFG_RSZ
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#define PTP_PIN_WF_LOW_PERIOD_RSZ PTP_PIN_CFG_RSZ
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#define PTP_PIN_CFG_DOM BIT(0)
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#define PTP_PIN_CFG_SYNC BIT(2)
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#define PTP_PIN_CFG_ACTION(x) ((x) << 3)
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#define PTP_PIN_CFG_ACTION_MASK PTP_PIN_CFG_ACTION(0x7)
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enum {
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PTP_PIN_ACTION_IDLE = 0,
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PTP_PIN_ACTION_LOAD,
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PTP_PIN_ACTION_SAVE,
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PTP_PIN_ACTION_CLOCK,
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PTP_PIN_ACTION_DELTA,
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PTP_PIN_ACTION_NOSYNC,
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PTP_PIN_ACTION_SYNC,
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};
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#define PTP_CFG_MISC_PTP_EN BIT(2)
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#define PSEC_PER_SEC 1000000000000LL
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#define PTP_CFG_CLK_ADJ_CFG_ENA BIT(0)
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#define PTP_CFG_CLK_ADJ_CFG_DIR BIT(1)
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#define PTP_CFG_CLK_ADJ_FREQ_NS BIT(30)
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int ocelot_ptp_gettime64(struct ptp_clock_info *ptp, struct timespec64 *ts);
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int ocelot_ptp_settime64(struct ptp_clock_info *ptp,
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const struct timespec64 *ts);
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int ocelot_ptp_adjtime(struct ptp_clock_info *ptp, s64 delta);
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int ocelot_ptp_adjfine(struct ptp_clock_info *ptp, long scaled_ppm);
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int ocelot_ptp_verify(struct ptp_clock_info *ptp, unsigned int pin,
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enum ptp_pin_function func, unsigned int chan);
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int ocelot_ptp_enable(struct ptp_clock_info *ptp,
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struct ptp_clock_request *rq, int on);
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int ocelot_init_timestamp(struct ocelot *ocelot, struct ptp_clock_info *info);
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int ocelot_deinit_timestamp(struct ocelot *ocelot);
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#endif
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