Commit 4316ec05 authored by Jorge Ramirez-Ortiz's avatar Jorge Ramirez-Ortiz Committed by Stephen Boyd

dt-bindings: mailbox: qcom: Add clock-name optional property

When the APCS clock is registered (platform dependent), it retrieves
its parent names from hardcoded values in the driver.

The following commit allows the DT node to provide such clock names to
the platform data based clock driver therefore avoiding having to
explicitly embed those names in the clock driver source code.
Co-developed-by: default avatarNiklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: default avatarNiklas Cassel <niklas.cassel@linaro.org>
Signed-off-by: default avatarJorge Ramirez-Ortiz <jorge.ramirez-ortiz@linaro.org>
Reviewed-by: default avatarRob Herring <robh@kernel.org>
Reviewed-by: default avatarBjorn Andersson <bjorn.andersson@linaro.org>
Link: https://lkml.kernel.org/r/20191125135910.679310-2-niklas.cassel@linaro.orgSigned-off-by: default avatarStephen Boyd <sboyd@kernel.org>
parent 87ec9adc
...@@ -21,10 +21,11 @@ platforms. ...@@ -21,10 +21,11 @@ platforms.
Usage: required Usage: required
Value type: <prop-encoded-array> Value type: <prop-encoded-array>
Definition: must specify the base address and size of the global block Definition: must specify the base address and size of the global block
- clocks: - clocks:
Usage: required if #clocks-cells property is present Usage: required if #clock-names property is present
Value type: <phandle> Value type: <phandle array>
Definition: phandle to the input PLL, which feeds the APCS mux/divider Definition: phandles to the two parent clocks of the clock driver.
- #mbox-cells: - #mbox-cells:
Usage: required Usage: required
...@@ -36,6 +37,12 @@ platforms. ...@@ -36,6 +37,12 @@ platforms.
Value type: <u32> Value type: <u32>
Definition: as described in clock.txt, must be 0 Definition: as described in clock.txt, must be 0
- clock-names:
Usage: required if the platform data based clock driver needs to
retrieve the parent clock names from device tree.
This will requires two mandatory clocks to be defined.
Value type: <string-array>
Definition: must be "pll" and "aux"
= EXAMPLE = EXAMPLE
The following example describes the APCS HMSS found in MSM8996 and part of the The following example describes the APCS HMSS found in MSM8996 and part of the
...@@ -68,3 +75,14 @@ Below is another example of the APCS binding on MSM8916 platforms: ...@@ -68,3 +75,14 @@ Below is another example of the APCS binding on MSM8916 platforms:
clocks = <&a53pll>; clocks = <&a53pll>;
#clock-cells = <0>; #clock-cells = <0>;
}; };
Below is another example of the APCS binding on QCS404 platforms:
apcs_glb: mailbox@b011000 {
compatible = "qcom,qcs404-apcs-apps-global", "syscon";
reg = <0x0b011000 0x1000>;
#mbox-cells = <1>;
clocks = <&apcs_hfpll>, <&gcc GCC_GPLL0_AO_OUT_MAIN>;
clock-names = "pll", "aux";
#clock-cells = <0>;
};
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