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

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Message-ID: <DM6PR11MB3291DF72DBF679A2FB80D0AAA217A@DM6PR11MB3291.namprd11.prod.outlook.com>
Date:   Mon, 14 Aug 2023 02:59:10 +0000
From:   "Rabara, Niravkumar L" <niravkumar.l.rabara@...el.com>
To:     Dinh Nguyen <dinguyen@...nel.org>, 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



> -----Original Message-----
> From: Dinh Nguyen <dinguyen@...nel.org>
> Sent: Monday, 14 August, 2023 10:48 AM
> 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;
> conor+dt@...nel.org; devicetree@...r.kernel.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
> 
> 
> 
> 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

Noted Dinh.

Thanks,
Nirav