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

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Message-Id: <20241227-a133-display-support-v1-9-13b52f71fb14@linumiz.com>
Date: Fri, 27 Dec 2024 16:37:56 +0530
From: Parthiban Nallathambi <parthiban@...umiz.com>
To: 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>
Cc: 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, 
 Parthiban Nallathambi <parthiban@...umiz.com>
Subject: [PATCH 09/22] iommu: sun50i: make reset control optional

A133/A100 SoC doesn't have reset control from the CCU. Get reset
control line optionally.

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