linux-kernel - Re: [PATCH 09/22] iommu: sun50i: make reset control optional

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Message-ID: <aJTGX7z5QaneVAVs@shepard>
Date: Thu, 7 Aug 2025 17:29:35 +0200
From: Paul Kocialkowski <paulk@...-base.io>
To: Parthiban Nallathambi <parthiban@...umiz.com>
Cc: Joerg Roedel <joro@...tes.org>, Will Deacon <will@...nel.org>,
	Robin Murphy <robin.murphy@....com>, Rob Herring <robh@...nel.org>,
	Krzysztof Kozlowski <krzk+dt@...nel.org>,
	Conor Dooley <conor+dt@...nel.org>, Chen-Yu Tsai <wens@...e.org>,
	Jernej Skrabec <jernej.skrabec@...il.com>,
	Samuel Holland <samuel@...lland.org>,
	Maxime Ripard <mripard@...nel.org>,
	Maarten Lankhorst <maarten.lankhorst@...ux.intel.com>,
	Thomas Zimmermann <tzimmermann@...e.de>,
	David Airlie <airlied@...il.com>, Simona Vetter <simona@...ll.ch>,
	Michael Turquette <mturquette@...libre.com>,
	Stephen Boyd <sboyd@...nel.org>,
	Philipp Zabel <p.zabel@...gutronix.de>,
	Linus Walleij <linus.walleij@...aro.org>,
	Vinod Koul <vkoul@...nel.org>,
	Kishon Vijay Abraham I <kishon@...nel.org>, iommu@...ts.linux.dev,
	devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org,
	linux-sunxi@...ts.linux.dev, linux-kernel@...r.kernel.org,
	dri-devel@...ts.freedesktop.org, linux-clk@...r.kernel.org,
	linux-gpio@...r.kernel.org, linux-phy@...ts.infradead.org
Subject: Re: [PATCH 09/22] iommu: sun50i: make reset control optional

Hi,

On Fri 27 Dec 24, 16:37, Parthiban Nallathambi wrote:
> A133/A100 SoC doesn't have reset control from the CCU. Get reset
> control line optionally.

With the dt bindings fixed, this:
Reviewed-by: Paul Kocialkowski <paulk@...-base.io>

Although feel free to use a first uppercase later in the title after sun50i!

Cheers,

Paul

> Signed-off-by: Parthiban Nallathambi <parthiban@...umiz.com>
> ---
>  drivers/iommu/sun50i-iommu.c | 2 +-
>  1 file changed, 1 insertion(+), 1 deletion(-)
> 
> diff --git a/drivers/iommu/sun50i-iommu.c b/drivers/iommu/sun50i-iommu.c
> index 8d8f11854676..2ba804d682dc 100644
> --- a/drivers/iommu/sun50i-iommu.c
> +++ b/drivers/iommu/sun50i-iommu.c
> @@ -1030,7 +1030,7 @@ static int sun50i_iommu_probe(struct platform_device *pdev)
>  		goto err_free_cache;
>  	}
>  
> -	iommu->reset = devm_reset_control_get(&pdev->dev, NULL);
> +	iommu->reset = devm_reset_control_get_optional(&pdev->dev, NULL);
>  	if (IS_ERR(iommu->reset)) {
>  		dev_err(&pdev->dev, "Couldn't get our reset line.\n");
>  		ret = PTR_ERR(iommu->reset);
> 
> -- 
> 2.39.5
> 
> 

-- 
Paul Kocialkowski,

Independent contractor - sys-base - https://www.sys-base.io/
Free software developer - https://www.paulk.fr/

Expert in multimedia, graphics and embedded hardware support with Linux.

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