linux-kernel - Re: [PATCH v2 4/5] clk: socfpga: agilex: add clock driver for the Agilex5

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Message-ID: <bc6858ef-833f-2eb8-7f19-02ba9063ac0f@kernel.org>
Date:   Sun, 13 Aug 2023 21:48:09 -0500
From:   Dinh Nguyen <dinguyen@...nel.org>
To:     "Rabara, Niravkumar L" <niravkumar.l.rabara@...el.com>,
        Stephen Boyd <sboyd@...nel.org>
Cc:     "Ng, Adrian Ho Yin" <adrian.ho.yin.ng@...el.com>,
        "andrew@...n.ch" <andrew@...n.ch>,
        "conor+dt@...nel.org" <conor+dt@...nel.org>,
        "devicetree@...r.kernel.org" <devicetree@...r.kernel.org>,
        "krzysztof.kozlowski+dt@...aro.org" 
        <krzysztof.kozlowski+dt@...aro.org>,
        "linux-clk@...r.kernel.org" <linux-clk@...r.kernel.org>,
        "linux-kernel@...r.kernel.org" <linux-kernel@...r.kernel.org>,
        "Turquette, Mike" <mturquette@...libre.com>,
        "netdev@...r.kernel.org" <netdev@...r.kernel.org>,
        "p.zabel@...gutronix.de" <p.zabel@...gutronix.de>,
        "richardcochran@...il.com" <richardcochran@...il.com>,
        "robh+dt@...nel.org" <robh+dt@...nel.org>,
        "wen.ping.teh@...el.com" <wen.ping.teh@...el.com>
Subject: Re: [PATCH v2 4/5] clk: socfpga: agilex: add clock driver for the
 Agilex5



On 8/13/23 07:53, Rabara, Niravkumar L wrote:
> 
> 
>> -----Original Message-----
>> From: Stephen Boyd <sboyd@...nel.org>
>> Sent: Thursday, 10 August, 2023 5:27 AM
>> To: Rabara, Niravkumar L <niravkumar.l.rabara@...el.com>
>> Cc: Ng, Adrian Ho Yin <adrian.ho.yin.ng@...el.com>; andrew@...n.ch;
>> conor+dt@...nel.org; devicetree@...r.kernel.org; dinguyen@...nel.org;
>> krzysztof.kozlowski+dt@...aro.org; linux-clk@...r.kernel.org; linux-
>> kernel@...r.kernel.org; Turquette, Mike <mturquette@...libre.com>;
>> netdev@...r.kernel.org; p.zabel@...gutronix.de; richardcochran@...il.com;
>> robh+dt@...nel.org; wen.ping.teh@...el.com
>> Subject: Re: [PATCH v2 4/5] clk: socfpga: agilex: add clock driver for the Agilex5
>>
>> Quoting niravkumar.l.rabara@...el.com (2023-07-31 18:02:33)
>>> diff --git a/drivers/clk/socfpga/clk-agilex.c
>>> b/drivers/clk/socfpga/clk-agilex.c
>>> index 74d21bd82710..3dcd0f233c17 100644
>>> --- a/drivers/clk/socfpga/clk-agilex.c
>>> +++ b/drivers/clk/socfpga/clk-agilex.c
>>> @@ -1,6 +1,6 @@
>>>   // SPDX-License-Identifier: GPL-2.0
>>>   /*
>>> - * Copyright (C) 2019, Intel Corporation
>>> + * Copyright (C) 2019-2023, Intel Corporation
>>>    */
>>>   #include <linux/slab.h>
>>>   #include <linux/clk-provider.h>
>>> @@ -9,6 +9,7 @@
>>>   #include <linux/platform_device.h>
>>>
>>>   #include <dt-bindings/clock/agilex-clock.h>
>>> +#include <dt-bindings/clock/intel,agilex5-clkmgr.h>
>>>
>>>   #include "stratix10-clk.h"
>>>
>>> @@ -41,6 +42,67 @@ static const struct clk_parent_data mpu_free_mux[] = {
>>>            .name = "f2s-free-clk", },
>>>   };
>>>
>>> +static const struct clk_parent_data core0_free_mux[] = {
>>> +       { .fw_name = "main_pll_c1",
>>> +         .name = "main_pll_c1", },
>>
>> We're adding support for something new? Only set .fw_name in that case, as
>> .name will never be used. To do even better, set only .index so that we don't do
>> any string comparisons.
>>
> Yes we are adding Agilex5 SoCFPGA platform specific clocks.
> I will remove .name and only keep .fw_name in next version of this patch.
>   
>>> +       { .fw_name = "peri_pll_c0",
>>> +         .name = "peri_pll_c0", },
>>> +       { .fw_name = "osc1",
>>> +         .name = "osc1", },
>>> +       { .fw_name = "cb-intosc-hs-div2-clk",
>>> +         .name = "cb-intosc-hs-div2-clk", },
>>> +       { .fw_name = "f2s-free-clk",
>>> +         .name = "f2s-free-clk", },
>>> +};
>>> +
>> [...]
>>> +
>>>   static int n5x_clk_register_c_perip(const struct n5x_perip_c_clock *clks,
>>>                                         int nums, struct
>>> stratix10_clock_data *data)  { @@ -535,6 +917,51 @@ static int
>>> n5x_clkmgr_init(struct platform_device *pdev)
>>>          return 0;
>>>   }
>>>
>>> +static int agilex5_clkmgr_init(struct platform_device *pdev) {
>>> +       struct device_node *np = pdev->dev.of_node;
>>> +       struct device *dev = &pdev->dev;
>>> +       struct stratix10_clock_data *clk_data;
>>
>> Maybe call this stratix_data so that clk_data.clk_data is stratix_data.clk_data.
> 
> Will fix this in next version.
> 
>>
>>> +       struct resource *res;
>>> +       void __iomem *base;
>>> +       int i, num_clks;
>>> +
>>> +       res = platform_get_resource(pdev, IORESOURCE_MEM, 0);
>>> +       base = devm_ioremap_resource(dev, res);
>>
>> This is a single function call, devm_platform_ioremap_resource().i
> 
> Noted. Will fix in next version.
> 

When you resend a V3, just send this patch. I've already applied the 
other 4 patches.

Dinh