Re: [PATCH 2/6] net: ethernet: ti: cpts: add support for ext rftclk selection
From: Rob Herring <robh@kernel.org>
Date: 2016-12-05 14:51:30
Also in:
linux-omap, lkml, netdev
On Mon, Nov 28, 2016 at 05:04:24PM -0600, Grygorii Strashko wrote:
Some CPTS instances, which can be found on KeyStone 2 1/10G Ethernet Switch Subsystems, can control an external multiplexer that selects one of up to 32 clocks for time sync reference (RFTCLK). This feature can be configured through CPTS_RFTCLK_SEL register (offset: x08). Hence, introduce optional DT cpts_rftclk_sel poperty wich, if present, will specify CPTS reference clock. The cpts_rftclk_sel should be omitted in DT if HW doesn't support this feature. The external fixed rate clocks can be defined in board files as "fixed-clock". Signed-off-by: Grygorii Strashko <grygorii.strashko@ti.com> --- Documentation/devicetree/bindings/net/keystone-netcp.txt | 2 ++
Please group binding changes into a single patch.
quoted hunk ↗ jump to hunk
drivers/net/ethernet/ti/cpts.c | 12 ++++++++++++ drivers/net/ethernet/ti/cpts.h | 8 +++++++- 3 files changed, 21 insertions(+), 1 deletion(-)diff --git a/Documentation/devicetree/bindings/net/keystone-netcp.txt b/Documentation/devicetree/bindings/net/keystone-netcp.txt index c37b54e..ec4a241 100644 --- a/Documentation/devicetree/bindings/net/keystone-netcp.txt +++ b/Documentation/devicetree/bindings/net/keystone-netcp.txt@@ -114,6 +114,8 @@ Optional properties: driver to them if needed. Properties related to cpts configurations. + - cpts-rftclk-sel: selects one of up to 32 clocks for time sync + reference. Default = 0.
Vendor prefix.
- cpts_clock_mult/cpts_clock_shift: used for converting time counter cycles to ns as in