[PATCH net-next 00/10] net: ethernet: ti: netcp: update and enable cpts support
From: Grygorii Strashko
Date: Sat Jun 01 2019 - 06:49:39 EST
The Keystone 2 66AK2HK/E/L 1G Ethernet Switch Subsystems contains The
Common Platform Time Sync (CPTS) module which is in general compatible with
CPTS module found on TI AM3/4/5 SoCs. So, the basic support for
Keystone 2 CPTS is available by default, but not documented and has never been
enabled inconfig files.
The Keystone 2 CPTS module supports also some additional features like time
sync reference (RFTCLK) clock selection through CPTS_RFTCLK_SEL register
(offset: x08) in CPTS module, which can modelled as multiplexer clock
(this was discussed some time ago ).
This series adds missed binding documentation for Keystone 2 66AK2HK/E/L
CPTS module and enables CPTS for TI Keystone 2 66AK2HK/E/L SoCs with possiblity
to select CPTS reference clock.
Patch 1: adds the CPTS binding documentation. CPTS bindings are defined in the
way that allows CPTS properties to be grouped under "cpts" sub-node.
It also defines "cpts-refclk-mux" clock for CPTS RFTCLK selection.
Patches 2-3: implement CPTS properties grouping under "cpts" sub-node with
backward compatibility support.
Patch 4: adds support for time sync reference (RFTCLK) clock selection from DT
by adding support for "cpts-refclk-mux" multiplexer clock.
Patches 5-9: DT CPTS nodes update for TI Keystone 2 66AK2HK/E/L SoCs.
Patch 10: enables CPTS for TI Keystone 2 66AK2HK/E/L SoCs.
I grouped all patches in one series for better illustration of the changes,
but in general Pateches 1-4 are netdev matarieal (first) and other patches
are platform specific.
Series can be found at:
Grygorii Strashko (10):
dt-bindings: doc: net: keystone-netcp: document cpts
net: ethernet: ti: cpts: use devm_get_clk_from_child
net: ethernet: ti: netcp_ethss: add support for child cpts node
net: ethernet: ti: cpts: add support for ext rftclk selection
ARM: dts: keystone-clocks: add input fixed clocks
ARM: dts: k2e-clocks: add input ext. fixed clocks tsipclka/b
ARM: dts: k2e-netcp: add cpts refclk_mux node
ARM: dts: k2hk-netcp: add cpts refclk_mux node
ARM: dts: k2l-netcp: add cpts refclk_mux node
ARM: configs: keystone: enable cpts
.../bindings/net/keystone-netcp.txt | 44 ++++++++++
arch/arm/boot/dts/keystone-clocks.dtsi | 27 ++++++
arch/arm/boot/dts/keystone-k2e-clocks.dtsi | 20 +++++
arch/arm/boot/dts/keystone-k2e-netcp.dtsi | 21 ++++-
arch/arm/boot/dts/keystone-k2hk-netcp.dtsi | 20 ++++-
arch/arm/boot/dts/keystone-k2l-netcp.dtsi | 20 ++++-
arch/arm/configs/keystone_defconfig | 1 +
drivers/net/ethernet/ti/cpts.c | 88 ++++++++++++++++++-
drivers/net/ethernet/ti/cpts.h | 2 +-
drivers/net/ethernet/ti/netcp_ethss.c | 9 +-
10 files changed, 240 insertions(+), 12 deletions(-)