Commit c64545e1 authored Oct 08, 2022 by Yonglong Liu Committed by Jiantao Xiao May 26, 2023

net: hns3: add support for Hisilicon ptp sync device

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I78MGV


CVE: NA

----------------------------------------------------------------------

The hns3 driver provide ptp driver to get 1588 clock from
ethernet, but only the first PF on main chip can support this,
so, if getting ptp time from other chip, may have some bus
latency. The PTP sync device use to eliminate the bus latency.

Signed-off-by: Yonglong Liu <liuyonglong@huawei.com>

parent 1f7abdfd

MAINTAINERS

+5 −0

Original line number	Diff line number	Diff line
		@@ -8065,6 +8065,11 @@ S: Maintained
		W: http://www.hisilicon.com
		F: drivers/spi/spi-hisi-sfc-v3xx.c

		HISILICON HNS3 PTP SYNC DRIVER
		M: Yonglong Liu <liuyonglong@huawei.com>
		S: Supported
		F: drivers/ptp/ptp_hisi.c

		HMM - Heterogeneous Memory Management
		M: Jérôme Glisse <jglisse@redhat.com>
		L: linux-mm@kvack.org

arch/arm64/configs/openeuler_defconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -3612,6 +3612,7 @@ CONFIG_DP83640_PHY=m
		# CONFIG_PTP_1588_CLOCK_INES is not set
		# CONFIG_PTP_1588_CLOCK_IDT82P33 is not set
		# CONFIG_PTP_1588_CLOCK_IDTCM is not set
		CONFIG_PTP_HISI=m
		# end of PTP clock support

		CONFIG_PINCTRL=y

drivers/ptp/Kconfig

+11 −0

Original line number	Diff line number	Diff line
		@@ -154,4 +154,15 @@ config PTP_1588_CLOCK_VMW
		To compile this driver as a module, choose M here: the module
		will be called ptp_vmw.

		config PTP_HISI
		tristate "HiSilicon PTP sync platform driver"
		help
		PTP sync driver work on multichip system, eliminates the bus latency
		between multichip, and provide a higher precision clock source. But
		the clock source of PTP sync device is from the RTC of HNS3 ethernet
		device, so, if you want the PTP sync device works, you must enable
		HNS3 driver also.

		If unsure, say N.

		endmenu

drivers/ptp/Makefile

+1 −0

Original line number	Diff line number	Diff line
		@@ -15,3 +15,4 @@ ptp-qoriq-$(CONFIG_DEBUG_FS) += ptp_qoriq_debugfs.o
		obj-$(CONFIG_PTP_1588_CLOCK_IDTCM) += ptp_clockmatrix.o
		obj-$(CONFIG_PTP_1588_CLOCK_IDT82P33) += ptp_idt82p33.o
		obj-$(CONFIG_PTP_1588_CLOCK_VMW) += ptp_vmw.o
		obj-$(CONFIG_PTP_HISI) += ptp_hisi.o

drivers/ptp/ptp_hisi.c

0 → 100644

+1027 −0

File added.

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