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authorTrent Piepho <tpiepho@impinj.com>2019-05-22 18:43:21 +0000
committerDavid S. Miller <davem@davemloft.net>2019-05-22 17:40:17 -0700
commit980066e6d9642fa5854bed8e592b1a30ea885b76 (patch)
tree4df7e9c3034ca7ffef64032344748990ab431054 /include/dt-bindings/net
parent9c3f3410f5ace868c7c82fe4479fd36bed5eee64 (diff)
downloadlinux-980066e6d9642fa5854bed8e592b1a30ea885b76.tar.bz2
dt-bindings: phy: dp83867: Add documentation for disabling clock output
The clock output is generally only used for testing and development and not used to daisy-chain PHYs. It's just a source of RF noise afterward. Add a mux value for "off". I've added it as another enumeration to the output property. In the actual PHY, the mux and the output enable are independently controllable. However, it doesn't seem useful to be able to describe the mux setting when the output is disabled. Document that PHY's default setting will be left as is if the property is omitted. Cc: Rob Herring <robh+dt@kernel.org> Cc: Mark Rutland <mark.rutland@arm.com> Signed-off-by: Trent Piepho <tpiepho@impinj.com> Reviewed-by: Andrew Lunn <andrew@lunn.ch> Signed-off-by: David S. Miller <davem@davemloft.net>
Diffstat (limited to 'include/dt-bindings/net')
-rw-r--r--include/dt-bindings/net/ti-dp83867.h2
1 files changed, 2 insertions, 0 deletions
diff --git a/include/dt-bindings/net/ti-dp83867.h b/include/dt-bindings/net/ti-dp83867.h
index 7b1656427cbe..192b79439eb7 100644
--- a/include/dt-bindings/net/ti-dp83867.h
+++ b/include/dt-bindings/net/ti-dp83867.h
@@ -56,4 +56,6 @@
#define DP83867_CLK_O_SEL_CHN_C_TCLK 0xA
#define DP83867_CLK_O_SEL_CHN_D_TCLK 0xB
#define DP83867_CLK_O_SEL_REF_CLK 0xC
+/* Special flag to indicate clock should be off */
+#define DP83867_CLK_O_SEL_OFF 0xFFFFFFFF
#endif