linux-kernel - Re: [PATCH v3] clk: qcom: gcc-sc8280xp: add cxo as parent for three ufs ref clks

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Date:   Wed, 16 Nov 2022 08:05:28 +0530
From:   Shazad Hussain <quic_shazhuss@...cinc.com>
To:     Bjorn Andersson <andersson@...nel.org>, <sboyd@...nel.org>
CC:     <johan@...nel.org>, <bmasney@...hat.com>, <agross@...nel.org>,
        <mturquette@...libre.com>, <ahalaney@...hat.com>,
        Johan Hovold <johan+linaro@...nel.org>,
        Konrad Dybcio <konrad.dybcio@...aro.org>,
        Vinod Koul <vkoul@...nel.org>, <linux-arm-msm@...r.kernel.org>,
        <linux-clk@...r.kernel.org>, <linux-kernel@...r.kernel.org>
Subject: Re: [PATCH v3] clk: qcom: gcc-sc8280xp: add cxo as parent for three
 ufs ref clks



On 11/15/2022 10:43 PM, Bjorn Andersson wrote:
> On Tue, Nov 15, 2022 at 08:59:56PM +0530, Shazad Hussain wrote:
>> The three UFS reference clocks, gcc_ufs_ref_clkref_clk for external
>> UFS devices, gcc_ufs_card_clkref_clk and gcc_ufs_1_card_clkref_clk for
>> two PHYs are all sourced from CXO.
>>
>> Added parent_data for all three reference clocks described above to
>> reflect that all three clocks are sourced from CXO to have valid
>> frequency for the ref clock needed by UFS controller driver.
>>
>> Fixes: d65d005f9a6c ("clk: qcom: add sc8280xp GCC driver")
>> Link: https://lore.kernel.org/lkml/Y2Tber39cHuOSR%2FW@hovoldconsulting.com/
>> Signed-off-by: Shazad Hussain <quic_shazhuss@...cinc.com>
>> Tested-by: Johan Hovold <johan+linaro@...nel.org>
>> Reviewed-by: Johan Hovold <johan+linaro@...nel.org>
>> Tested-by: Andrew Halaney <ahalaney@...hat.com>
>> Reviewed-by: Andrew Halaney <ahalaney@...hat.com>
>> Reviewed-by: Reviewed-by: Brian Masney <bmasney@...hat.com>
> 
> Really-really-reviewed-by?  >
My bad, thanks for pointing it Bjorn :)
> 
> Reviewed-by: Bjorn Andersson <andersson@...nel.org>
> 
> 
> @Stephen, could you please pick this for clk-fixes?
> 
> Thanks,
> Bjorn
> 
>> ---
>> Changes since v2:
>> -  Tweaked commit message and added R-b T-b from v2
>>
>> v2 of this patch can be found at
>> https://lore.kernel.org/all/20221115102217.6381-1-quic_shazhuss@quicinc.com/
>>
>> v1 of this patch can be found at
>> https://lore.kernel.org/all/20221030142333.31019-1-quic_shazhuss@quicinc.com/
>>
>> used below patches for verification on next-20221114
>> https://lore.kernel.org/lkml/20221104092045.17410-2-johan+linaro@kernel.org/
>> https://lore.kernel.org/lkml/20221104092045.17410-3-johan+linaro@kernel.org/
>> https://lore.kernel.org/lkml/20221111113732.461881-1-thierry.reding@gmail.com/
>>
>>   drivers/clk/qcom/gcc-sc8280xp.c | 6 ++++++
>>   1 file changed, 6 insertions(+)
>>
>> diff --git a/drivers/clk/qcom/gcc-sc8280xp.c b/drivers/clk/qcom/gcc-sc8280xp.c
>> index a18ed88f3b82..b3198784e1c3 100644
>> --- a/drivers/clk/qcom/gcc-sc8280xp.c
>> +++ b/drivers/clk/qcom/gcc-sc8280xp.c
>> @@ -5364,6 +5364,8 @@ static struct clk_branch gcc_ufs_1_card_clkref_clk = {
>>   		.enable_mask = BIT(0),
>>   		.hw.init = &(const struct clk_init_data) {
>>   			.name = "gcc_ufs_1_card_clkref_clk",
>> +			.parent_data = &gcc_parent_data_tcxo,
>> +			.num_parents = 1,
>>   			.ops = &clk_branch2_ops,
>>   		},
>>   	},
>> @@ -5432,6 +5434,8 @@ static struct clk_branch gcc_ufs_card_clkref_clk = {
>>   		.enable_mask = BIT(0),
>>   		.hw.init = &(const struct clk_init_data) {
>>   			.name = "gcc_ufs_card_clkref_clk",
>> +			.parent_data = &gcc_parent_data_tcxo,
>> +			.num_parents = 1,
>>   			.ops = &clk_branch2_ops,
>>   		},
>>   	},
>> @@ -5848,6 +5852,8 @@ static struct clk_branch gcc_ufs_ref_clkref_clk = {
>>   		.enable_mask = BIT(0),
>>   		.hw.init = &(const struct clk_init_data) {
>>   			.name = "gcc_ufs_ref_clkref_clk",
>> +			.parent_data = &gcc_parent_data_tcxo,
>> +			.num_parents = 1,
>>   			.ops = &clk_branch2_ops,
>>   		},
>>   	},
>> -- 
>> 2.38.0
>>