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| author | Richard Cochran <richardcochran@gmail.com> | 2012-10-29 08:45:19 +0000 |
|---|---|---|
| committer | David S. Miller <davem@davemloft.net> | 2012-11-01 12:21:32 -0400 |
| commit | 00ab94eeaf6c1ad38ad7368c5148fed31403c8a2 (patch) | |
| tree | e76e94fe6e4ff9ac7b48dfedd0584bf2bb5164de /Documentation | |
| parent | 78ca0b287314ad6b7b06161b3ff9b13e8a8bcce0 (diff) | |
| download | linux-00ab94eeaf6c1ad38ad7368c5148fed31403c8a2.tar.gz linux-00ab94eeaf6c1ad38ad7368c5148fed31403c8a2.tar.bz2 linux-00ab94eeaf6c1ad38ad7368c5148fed31403c8a2.zip | |
cpts: specify the input clock frequency via DT
This patch adds a way to configure the CPTS input clock scaling factors
via the device tree.
Signed-off-by: Richard Cochran <richardcochran@gmail.com>
Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'Documentation')
| -rw-r--r-- | Documentation/devicetree/bindings/net/cpsw.txt | 6 |
1 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/net/cpsw.txt b/Documentation/devicetree/bindings/net/cpsw.txt index 9f61f2b51681..221460714c56 100644 --- a/Documentation/devicetree/bindings/net/cpsw.txt +++ b/Documentation/devicetree/bindings/net/cpsw.txt @@ -24,6 +24,8 @@ Required properties: for the specific platform - slaves : Specifies number for slaves - cpts_active_slave : Specifies the slave to use for time stamping +- cpts_clock_mult : Numerator to convert input clock ticks into nanoseconds +- cpts_clock_shift : Denominator to convert input clock ticks into nanoseconds - slave_reg_ofs : Specifies slave register offset - sliver_reg_ofs : Specifies slave sliver register offset - phy_id : Specifies slave phy id @@ -62,6 +64,8 @@ Examples: mac_control = <0x20>; slaves = <2>; cpts_active_slave = <0>; + cpts_clock_mult = <0x80000000>; + cpts_clock_shift = <29>; cpsw_emac0: slave@0 { slave_reg_ofs = <0x200>; sliver_reg_ofs = <0xd80>; @@ -98,6 +102,8 @@ Examples: mac_control = <0x20>; slaves = <2>; cpts_active_slave = <0>; + cpts_clock_mult = <0x80000000>; + cpts_clock_shift = <29>; cpsw_emac0: slave@0 { slave_reg_ofs = <0x200>; sliver_reg_ofs = <0xd80>; |