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authorTero Kristo <t-kristo@ti.com>2018-02-15 08:44:52 +0100
committerTero Kristo <t-kristo@ti.com>2018-03-08 10:42:04 +0100
commitbe02637f6b741875aa0779c35f31591738aa2cd9 (patch)
tree8eedafd5739140f1dc6212b817b0c3496c3e9cd8 /Documentation
parentLinux 4.16-rc1 (diff)
downloadlinux-be02637f6b741875aa0779c35f31591738aa2cd9.tar.xz
linux-be02637f6b741875aa0779c35f31591738aa2cd9.zip
dt-bindings: clock: ti: add latching support to mux and divider clocks
Certain hardware configurations, like dra76x, have some of the clock registers partitioned in a funky manner that requires the clock control setup to be latched for PRCM to be notified of the change. This is accomplished with a separate control bit under the register. Add support for this clock latching support to divider and mux clocks. Signed-off-by: Tero Kristo <t-kristo@ti.com> Reviewed-by: Rob Herring <robh@kernel.org>
Diffstat (limited to 'Documentation')
-rw-r--r--Documentation/devicetree/bindings/clock/ti/divider.txt3
-rw-r--r--Documentation/devicetree/bindings/clock/ti/mux.txt3
2 files changed, 6 insertions, 0 deletions
diff --git a/Documentation/devicetree/bindings/clock/ti/divider.txt b/Documentation/devicetree/bindings/clock/ti/divider.txt
index 35a6f5c7e5c2..9b13b32974f9 100644
--- a/Documentation/devicetree/bindings/clock/ti/divider.txt
+++ b/Documentation/devicetree/bindings/clock/ti/divider.txt
@@ -75,6 +75,9 @@ Optional properties:
- ti,invert-autoidle-bit : autoidle is enabled by setting the bit to 0,
see [2]
- ti,set-rate-parent : clk_set_rate is propagated to parent
+- ti,latch-bit : latch the divider value to HW, only needed if the register
+ access requires this. As an example dra76x DPLL_GMAC H14 divider implements
+ such behavior.
Examples:
dpll_usb_m2_ck: dpll_usb_m2_ck@4a008190 {
diff --git a/Documentation/devicetree/bindings/clock/ti/mux.txt b/Documentation/devicetree/bindings/clock/ti/mux.txt
index 2d0d170f8001..eec8994b9be8 100644
--- a/Documentation/devicetree/bindings/clock/ti/mux.txt
+++ b/Documentation/devicetree/bindings/clock/ti/mux.txt
@@ -48,6 +48,9 @@ Optional properties:
zero
- ti,set-rate-parent : clk_set_rate is propagated to parent clock,
not supported by the composite-mux-clock subtype
+- ti,latch-bit : latch the mux value to HW, only needed if the register
+ access requires this. As an example, dra7x DPLL_GMAC H14 muxing
+ implements such behavior.
Examples: