| Message ID | 20211028125341.2457171-2-horatiu.vultur@microchip.com |
|---|---|
| State | Superseded |
| Headers | show |
| Series | i2c-mux-gpmux: Support settle-time-us property | expand |
On 2021-10-28 14:53, Horatiu Vultur wrote: > Some HW requires some time for the signals to settle after the muxing is > changed. Allow this time to be specified in device tree. > > Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> Maybe this belongs in the i2c-mux binding? Because next week it's someone with some other i2c-mux that needs the signals so settle. Please include some language that maybe not all driver support this optional binding etc. For reference, compare with the optional properties in the i2c binding. Cheers, Peter
diff --git a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml index 9b0603a72f40..4fef5aad360b 100644 --- a/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml +++ b/Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml @@ -67,6 +67,11 @@ properties: The properties of mux-locked and parent-locked multiplexers are discussed in more detail in Documentation/i2c/i2c-topology.rst. + settle-time-us: + default: 0 + description: + The time required for the signals to settle. + required: - compatible - i2c-parent
Some HW requires some time for the signals to settle after the muxing is changed. Allow this time to be specified in device tree. Signed-off-by: Horatiu Vultur <horatiu.vultur@microchip.com> --- Documentation/devicetree/bindings/i2c/i2c-mux-gpmux.yaml | 5 +++++ 1 file changed, 5 insertions(+)