linux-kernel - Re: [PATCH V2 2/4] clk: qcom: branch: Add mem ops support for branch2 clocks

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Message-ID: <4aba7e8e-f130-dc03-b64d-126b8b87dc27@quicinc.com>
Date:   Wed, 18 Oct 2023 16:27:14 +0530
From:   Imran Shaik <quic_imrashai@...cinc.com>
To:     Stephen Boyd <sboyd@...nel.org>, Andy Gross <agross@...nel.org>,
        "Bjorn Andersson" <andersson@...nel.org>,
        Conor Dooley <conor+dt@...nel.org>,
        "Konrad Dybcio" <konrad.dybcio@...aro.org>,
        Krzysztof Kozlowski <krzysztof.kozlowski+dt@...aro.org>,
        Michael Turquette <mturquette@...libre.com>,
        Rob Herring <robh+dt@...nel.org>
CC:     Taniya Das <quic_tdas@...cinc.com>,
        <linux-arm-msm@...r.kernel.org>, <linux-clk@...r.kernel.org>,
        <devicetree@...r.kernel.org>, <linux-kernel@...r.kernel.org>,
        Ajit Pandey <quic_ajipan@...cinc.com>,
        Jagadeesh Kona <quic_jkona@...cinc.com>
Subject: Re: [PATCH V2 2/4] clk: qcom: branch: Add mem ops support for branch2
 clocks



On 10/13/2023 1:54 AM, Stephen Boyd wrote:
> Quoting Imran Shaik (2023-10-11 02:00:26)
>> diff --git a/drivers/clk/qcom/clk-branch.c b/drivers/clk/qcom/clk-branch.c
>> index fc4735f74f0f..9ac8d04b425a 100644
>> --- a/drivers/clk/qcom/clk-branch.c
>> +++ b/drivers/clk/qcom/clk-branch.c
>> @@ -134,6 +135,42 @@ static void clk_branch2_disable(struct clk_hw *hw)
>>          clk_branch_toggle(hw, false, clk_branch2_check_halt);
>>   }
>>   
>> +static int clk_branch2_mem_enable(struct clk_hw *hw)
>> +{
>> +       struct clk_mem_branch *mem_br = to_clk_mem_branch(hw);
>> +       const char *name = clk_hw_get_name(&mem_br->branch.clkr.hw);
>> +       u32 val;
>> +       int timeout = 200, ret;
> 
> const int timeout?
> 

Will drop the timeout as per Konrad's review comment and pass the int 
literal.

>> +
>> +       regmap_update_bits(mem_br->branch.clkr.regmap, mem_br->mem_enable_reg,
>> +                       mem_br->mem_enable_ack_bit, mem_br->mem_enable_ack_bit);
>> +
>> +       ret = regmap_read_poll_timeout(mem_br->branch.clkr.regmap, mem_br->mem_ack_reg,
>> +                       val, val & mem_br->mem_enable_ack_bit, 0, timeout);
> 
> The 'mem_br->branch' is used a few times so please make another local
> variable for that called 'branch'.
> 
>> +       if (ret) {
>> +               WARN(1, "%s mem enable failed", name);
> 
> Needs a newline on the message string.
> 

Sure, will update this in the next series.

>> +               return ret;
>> +       }
>> +
>> +       return clk_branch2_enable(hw);
>> +}
>> +
>> +static void clk_branch2_mem_disable(struct clk_hw *hw)
>> +{
>> +       struct clk_mem_branch *mem_br = to_clk_mem_branch(hw);
>> +
>> +       regmap_update_bits(mem_br->branch.clkr.regmap, mem_br->mem_enable_reg,
>> +                                               mem_br->mem_enable_ack_bit, 0);
> 
> Please add a newline here.
> 

Sure.

Thanks,
Imran

>> +       return clk_branch2_disable(hw);
>> +}
>> +