Re: [PATCH v1 2/4] dt-bindings: clock: Add support for the MSM8998 mmcc
From: Jeffrey Hugo <hidden>
Date: 2019-02-05 22:08:52
Also in:
linux-arm-msm, linux-clk, lkml
On 2/5/2019 3:02 PM, Stephen Boyd wrote:
Quoting Jeffrey Hugo (2019-01-30 08:35:59)quoted
Document the multimedia clock controller found on MSM8998 Signed-off-by: Jeffrey Hugo <redacted> --- Documentation/devicetree/bindings/clock/qcom,mmcc.txt | 7 +++++++ 1 file changed, 7 insertions(+)diff --git a/Documentation/devicetree/bindings/clock/qcom,mmcc.txt b/Documentation/devicetree/bindings/clock/qcom,mmcc.txt index 8b0f784..ae85bca 100644 --- a/Documentation/devicetree/bindings/clock/qcom,mmcc.txt +++ b/Documentation/devicetree/bindings/clock/qcom,mmcc.txt@@ -10,11 +10,18 @@ Required properties : "qcom,mmcc-msm8960" "qcom,mmcc-msm8974" "qcom,mmcc-msm8996" + "qcom,mmcc-msm8998" - reg : shall contain base register location and length - #clock-cells : shall contain 1 - #reset-cells : shall contain 1 +For MSM8998 only: + - clocks: a list of phandles and clock-specifier pairs, + one for each entry in clock-names. + - clock-names: "xo" for the xo clock, + "gpll0" for the global pll 0 clock.Wouldn't the DSI plls also be listed here? And anything else that is external to this clock controller?
We can't get the DSI plls from DT as far as I am aware (upstream). That is why I mentioned in the cover letter we need to rely on the global namespace. Also, the DSI plls, etc present a chicken and egg situation, as the plls require mmcc, and mmcc requires the plls. I forsee an unsolvable EPROBE_DEFER issue. -- Jeffrey Hugo Qualcomm Datacenter Technologies as an affiliate of Qualcomm Technologies, Inc. Qualcomm Technologies, Inc. is a member of the Code Aurora Forum, a Linux Foundation Collaborative Project.