linux-kernel - Re: [PATCH v4 11/31] clk: at91: clk-usb: add support for clk_parent

lists.openwall.net		lists / announce owl-users owl-dev john-users john-dev passwdqc-users yescrypt popa3d-users / oss-security kernel-hardening musl sabotage tlsify passwords / crypt-dev xvendor / Bugtraq Full-Disclosure linux-kernel linux-netdev linux-ext4 linux-hardening linux-cve-announce PHC
Open Source and information security mailing list archives

Hash Suite: Windows password security audit tool. GUI, reports in PDF.

[<prev] [next>] [<thread-prev] [thread-next>] [day] [month] [year] [list]

Message-ID: <27aab227-01e3-4074-8aab-38623b4d9808@tuxon.dev>
Date: Mon, 20 Oct 2025 22:17:21 +0300
From: Claudiu Beznea <claudiu.beznea@...on.dev>
To: Ryan.Wanner@...rochip.com, mturquette@...libre.com, sboyd@...nel.org,
 alexandre.belloni@...tlin.com, nicolas.ferre@...rochip.com
Cc: linux-clk@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
 linux-kernel@...r.kernel.org, varshini.rajendran@...rochip.com
Subject: Re: [PATCH v4 11/31] clk: at91: clk-usb: add support for
 clk_parent_data

Hi, Ryan,

On 9/19/25 00:15, Ryan.Wanner@...rochip.com wrote:
> From: Claudiu Beznea <claudiu.beznea@...on.dev>
> 
> Add support for clk_parent_data in usb clock driver.
> 
> All the SoC based drivers that rely on clk-usb were adapted
> to the new API change. The switch itself for SoCs will be done
> in subsequent patches.
> 
> Remove the use of __clk_get_hw() for the slow clocks.
> 
> Signed-off-by: Claudiu Beznea <claudiu.beznea@...on.dev>
> [ryan.wanner@...rochip: Add SAMA7D65 and SAM9X75 SoCs to the changes.
> Change how the main_xtal and slcks are initialized so they match the
> parent_data API]
> Signed-off-by: Ryan Wanner <Ryan.Wanner@...rochip.com>
> ---
>  drivers/clk/at91/at91rm9200.c  |  2 +-
>  drivers/clk/at91/at91sam9260.c |  2 +-
>  drivers/clk/at91/at91sam9g45.c |  2 +-
>  drivers/clk/at91/at91sam9n12.c |  2 +-
>  drivers/clk/at91/at91sam9x5.c  |  2 +-
>  drivers/clk/at91/clk-usb.c     | 41 ++++++++++++++++++++++------------
>  drivers/clk/at91/dt-compat.c   |  6 ++---
>  drivers/clk/at91/pmc.h         | 11 +++++----
>  drivers/clk/at91/sam9x60.c     |  2 +-
>  drivers/clk/at91/sam9x7.c      | 21 +++++++++--------
>  drivers/clk/at91/sama5d2.c     |  2 +-
>  drivers/clk/at91/sama5d3.c     |  2 +-
>  drivers/clk/at91/sama5d4.c     |  2 +-
>  drivers/clk/at91/sama7d65.c    | 24 +++++++++++---------
>  14 files changed, 72 insertions(+), 49 deletions(-)
> 

[ ... ]

> @@ -882,10 +885,10 @@ static void __init sam9x7_pmc_setup(struct device_node *np)
>  
>  	sam9x7_pmc->chws[PMC_MCK] = hw;
>  
> -	parent_names[0] = "plla_divpmcck";
> -	parent_names[1] = "upll_divpmcck";
> -	parent_names[2] = "main_osc";
> -	usbck_hw = sam9x60_clk_register_usb(regmap, "usbck", parent_names, 3);
> +	parent_data[0] = AT91_CLK_PD_HW(sam9x7_plls[PLL_ID_PLLA][PLL_COMPID_DIV0].hw);
> +	parent_data[1] = AT91_CLK_PD_HW(sam9x7_plls[PLL_ID_UPLL][PLL_COMPID_DIV0].hw);
> +	parent_data[2] = AT91_CLK_PD_HW(main_osc_hw);
> +	usbck_hw = sam9x60_clk_register_usb(regmap, "usbck", NULL, parent_data, 3);

sam9x60_clk_register_usb() could be converted to use parent_hws member of
struct clk_init_data instead of parent_data.