[PATCH 04/16] soc: renesas: Add SYSC driver for Renesas RZ/G3S

[claudiu beznea]

Hi, Geert,

On 24.09.2024 14:32, Geert Uytterhoeven wrote:
> Hi Claudiu,
> 
> On Thu, Aug 22, 2024 at 5:28 PM Claudiu <claudiu.beznea at tuxon.dev> wrote:
>> From: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
>>
>> The RZ/G3S SYS Controller has 2 registers (one for PCIE one for USB) that
>> need to be configured before/after powering off/on the PCI or USB
>> ares. The bits in these registers control signals to PCIE and USB that
>> need to be de-asserted/asserted after/before power on/off event. For this
>> add SYSC controller driver that registers a reset controller driver on
>> auxiliary bus which allows USB, PCIE drivers to control these signals.
>>
>> Signed-off-by: Claudiu Beznea <claudiu.beznea.uj at bp.renesas.com>
> 
> Thanks for your patch!
> 
>> --- /dev/null
>> +++ b/drivers/reset/reset-rzg3s-sysc.c
>> @@ -0,0 +1,140 @@
>> +// SPDX-License-Identifier: GPL-2.0
>> +/*
>> + * Renesas RZ/G3S SYSC reset driver
>> + *
>> + * Copyright (C) 2024 Renesas Electronics Corp.
>> + */
>> +
>> +#include <linux/auxiliary_bus.h>
> 
> Using the Auxiliary Bus requires selecting AUXILIARY_BUS.

Thank you for pointing it. I'll adjust it in the next version, if it will
be one.


> Elsse you might run into build failures:
> 
> aarch64-linux-gnu-ld: drivers/soc/renesas/rzg3s-sysc.o: in function
> `rzg3s_sysc_probe':
> rzg3s-sysc.c:(.text+0x21c): undefined reference to `auxiliary_device_init'
> aarch64-linux-gnu-ld: rzg3s-sysc.c:(.text+0x264): undefined reference
> to `__auxiliary_device_add'
> aarch64-linux-gnu-ld: drivers/reset/reset-rzg3s-sysc.o: in function
> `rzg3s_sysc_reset_driver_init':
> reset-rzg3s-sysc.c:(.init.text+0x1c): undefined reference to
> `__auxiliary_driver_register'
> aarch64-linux-gnu-ld: drivers/reset/reset-rzg3s-sysc.o: in function
> `rzg3s_sysc_reset_driver_exit':
> reset-rzg3s-sysc.c:(.exit.text+0x10): undefined reference to
> `auxiliary_driver_unregister'
> 
> Gr{oetje,eeting}s,
> 
>                         Geert
>