Re: [RFC PATCH 12/12] ARM: dts: qcom: apq8084: add clocks and clock-names to gcc device

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On 27.12.2022 13:31, Dmitry Baryshkov wrote:
> On Tue, 27 Dec 2022 at 14:08, Konrad Dybcio <konrad.dybcio@xxxxxxxxxx> wrote:
>>
>>
>>
>> On 27.12.2022 02:32, Dmitry Baryshkov wrote:
>>> Add clocks and clock-names nodes to the gcc device to bind clocks using
>>> the DT links.
>>>
>>> Signed-off-by: Dmitry Baryshkov <dmitry.baryshkov@xxxxxxxxxx>
>>> ---
>> Reviewed-by: Konrad Dybcio <konrad.dybcio@xxxxxxxxxx>
>>
>> Though - again at the end of reviewing - I noticed you could have
>> gone .index instead, like with qcs404.
> 
> QCS404 driver was in a good shape, so I doubt there will be any
> significant changes for the bindings. On the other hand the apq8084 is
> in such a flux state, that I can easily imagine getting additional
> clock parents and/or removing existing parents. This can better be
> coped with by using the clock-names instead of indices. For example,
> see my comment regarding the pcie pipe clocks. I fear that apq8084 was
> not seriously touched for the last 5 years. And even back in those
> days not everything was plumbed together. None of MMCC (and thus
> display, camera, venus), SATA, PCIe are present in the
> qcom-apq8084.dtsi.
Sure, sounds reasonable!

Konrad
> 
>>
>> Konrad
>>
>>>  arch/arm/boot/dts/qcom-apq8084.dtsi | 18 ++++++++++++++++++
>>>  1 file changed, 18 insertions(+)
>>>
>>> diff --git a/arch/arm/boot/dts/qcom-apq8084.dtsi b/arch/arm/boot/dts/qcom-apq8084.dtsi
>>> index fe30abfff90a..815b6c53f7b8 100644
>>> --- a/arch/arm/boot/dts/qcom-apq8084.dtsi
>>> +++ b/arch/arm/boot/dts/qcom-apq8084.dtsi
>>> @@ -388,6 +388,24 @@ gcc: clock-controller@fc400000 {
>>>                       #reset-cells = <1>;
>>>                       #power-domain-cells = <1>;
>>>                       reg = <0xfc400000 0x4000>;
>>> +                     clocks = <&xo_board>,
>>> +                              <&sleep_clk>,
>>> +                              <0>, /* ufs */
>>> +                              <0>,
>>> +                              <0>,
>>> +                              <0>,
>>> +                              <0>, /* sata */
>>> +                              <0>,
>>> +                              <0>; /* pcie */
>>> +                     clock-names = "xo",
>>> +                                   "sleep_clk",
>>> +                                   "ufs_rx_symbol_0_clk_src",
>>> +                                   "ufs_rx_symbol_1_clk_src",
>>> +                                   "ufs_tx_symbol_0_clk_src",
>>> +                                   "ufs_tx_symbol_1_clk_src",
>>> +                                   "sata_asic0_clk",
>>> +                                   "sata_rx_clk",
>>> +                                   "pcie_pipe";
>>>               };
>>>
>>>               tcsr_mutex: hwlock@fd484000 {
> 
> 
> 



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