Commit e6aa0ecf authored Oct 08, 2022 by Yonglong Liu Committed by Hao Chen Apr 28, 2024

net: hns3: add support for Hisilicon ptp sync device

driver inclusion
category: feature
bugzilla: https://gitee.com/openeuler/kernel/issues/I9I46F


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 0c8d7c88

MAINTAINERS

+5 −0

Original line number	Diff line number	Diff line
		@@ -9523,6 +9523,11 @@ 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

		HISILICON ZIP Controller DRIVER
		M: Yang Shen <shenyang39@huawei.com>
		M: Zhou Wang <wangzhou1@hisilicon.com>

arch/arm64/configs/openeuler_defconfig

+1 −0

Original line number	Diff line number	Diff line
		@@ -3880,6 +3880,7 @@ CONFIG_PTP_1588_CLOCK_KVM=y
		# CONFIG_PTP_1588_CLOCK_MOCK is not set
		# CONFIG_PTP_1588_CLOCK_OCP is not set
		# end of PTP clock support
		CONFIG_PTP_HISI=m

		CONFIG_PINCTRL=y
		CONFIG_PINMUX=y

drivers/ptp/Kconfig

+12 −0

Original line number	Diff line number	Diff line
		@@ -211,4 +211,16 @@ config PTP_DFL_TOD
		To compile this driver as a module, choose M here: the module
		will be called ptp_dfl_tod.

		config PTP_HISI
		tristate "HiSilicon PTP sync platform driver"
		depends on ARM64
		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
		@@ -20,3 +20,4 @@ obj-$(CONFIG_PTP_1588_CLOCK_MOCK) += ptp_mock.o
		obj-$(CONFIG_PTP_1588_CLOCK_VMW) += ptp_vmw.o
		obj-$(CONFIG_PTP_1588_CLOCK_OCP) += ptp_ocp.o
		obj-$(CONFIG_PTP_DFL_TOD) += ptp_dfl_tod.o
		obj-$(CONFIG_PTP_HISI) += ptp_hisi.o

drivers/ptp/ptp_hisi.c

0 → 100644

+1027 −0

File added.

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