linux-kernel - Re: [PATCH v9 4/6] reset: spacemit: add support for SpacemiT CCU resets

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Message-ID: <d25aa4b10e2ebefb36e0db03123b404044e71ec1.camel@pengutronix.de>
Date: Tue, 13 May 2025 11:21:04 +0200
From: Philipp Zabel <p.zabel@...gutronix.de>
To: Alex Elder <elder@...cstar.com>, robh@...nel.org, krzk+dt@...nel.org, 
 conor+dt@...nel.org, mturquette@...libre.com, sboyd@...nel.org, 
 paul.walmsley@...ive.com, palmer@...belt.com, aou@...s.berkeley.edu,
 alex@...ti.fr,  dlan@...too.org
Cc: heylenay@....org, inochiama@...look.com, guodong@...cstar.com, 
 devicetree@...r.kernel.org, linux-clk@...r.kernel.org,
 spacemit@...ts.linux.dev,  linux-riscv@...ts.infradead.org,
 linux-kernel@...r.kernel.org
Subject: Re: [PATCH v9 4/6] reset: spacemit: add support for SpacemiT CCU
 resets

On Mo, 2025-05-12 at 13:32 -0500, Alex Elder wrote:
> Implement reset support for SpacemiT CCUs.  A SpacemiT reset controller
> device is an auxiliary device associated with a clock controller (CCU).
> 
> This initial patch defines the reset controllers for the MPMU, APBC, and
> MPMU CCUs, which already define clock controllers.
> 
> Signed-off-by: Alex Elder <elder@...cstar.com>
> ---
>  drivers/reset/Kconfig          |   9 ++
>  drivers/reset/Makefile         |   1 +
>  drivers/reset/reset-spacemit.c | 246 +++++++++++++++++++++++++++++++++
>  3 files changed, 256 insertions(+)
>  create mode 100644 drivers/reset/reset-spacemit.c
>
[...]
> diff --git a/drivers/reset/reset-spacemit.c b/drivers/reset/reset-spacemit.c
> new file mode 100644
> index 0000000000000..eff67bdc8adba
> --- /dev/null
> +++ b/drivers/reset/reset-spacemit.c
> @@ -0,0 +1,246 @@
[...]
> +static int spacemit_reset_controller_register(struct device *dev,
> +			       struct ccu_reset_controller *controller)

Align to open parenthesis, line length is fine.

> +{
> +	struct reset_controller_dev *rcdev = &controller->rcdev;
> +
> +	rcdev->ops = &spacemit_reset_control_ops;
> +	rcdev->owner = THIS_MODULE;
> +	rcdev->of_node = dev->of_node;
> +	rcdev->nr_resets = controller->data->count;
> +
> +	return devm_reset_controller_register(dev, &controller->rcdev);
> +}
> +
> +static int spacemit_reset_probe(struct auxiliary_device *adev,
> +				const struct auxiliary_device_id *id)
> +{
> +	struct spacemit_ccu_adev *rdev = to_spacemit_ccu_adev(adev);
> +	const void *data = (void *)id->driver_data;

Unnecessary (void *) detour. Just cast to (const struct
ccu_reset_controller_data *) directly. Otherwise,

Reviewed-by: Philipp Zabel <p.zabel@...gutronix.de>


regards
Philipp