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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 1/9] dt-bindings: ata: ahci-platform: fix indentation of
 target-supply
Date: Mon,  3 Sep 2018 12:01:53 +0200
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Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
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This patch fix the indentation of target-supply's ':'.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 Documentation/devicetree/bindings/ata/ahci-platform.txt | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index 5d5bd456d9d9..b88820b4c01e 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -47,7 +47,7 @@ Sub-nodes required properties:
 - reg		    : the port number
 And at least one of the following properties:
 - phys		    : reference to the SATA PHY node
-- target-supply    : regulator for SATA target power
+- target-supply     : regulator for SATA target power
 
 Examples:
         sata@ffe08000 {
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 2/9] ata: ahci_platform: add support for AHCI controller
 regulator
Date: Mon,  3 Sep 2018 12:01:54 +0200
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The SoC R40 AHCI controller need a regulator to work.
So this patch add a way to add an optional regulator on AHCI controller.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 drivers/ata/ahci.h             |  1 +
 drivers/ata/libahci_platform.c | 26 ++++++++++++++++++++++++--
 2 files changed, 25 insertions(+), 2 deletions(-)

diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 6a1515f0da40..1415f1012de5 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -352,6 +352,7 @@ struct ahci_host_priv {
 	struct clk		*clks[AHCI_MAX_CLKS]; /* Optional */
 	struct reset_control	*rsts;		/* Optional */
 	struct regulator	**target_pwrs;	/* Optional */
+	struct regulator	*ahci_regulator;/* Optional */
 	/*
 	 * If platform uses PHYs. There is a 1:1 relation between the port number and
 	 * the PHY position in this array.
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index c92c10d55374..a886b61476a3 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -139,7 +139,7 @@ EXPORT_SYMBOL_GPL(ahci_platform_disable_clks);
  * ahci_platform_enable_regulators - Enable regulators
  * @hpriv: host private area to store config values
  *
- * This function enables all the regulators found in
+ * This function enables all the regulators found in controller and
  * hpriv->target_pwrs, if any.  If a regulator fails to be enabled, it
  * disables all the regulators already enabled in reverse order and
  * returns an error.
@@ -151,6 +151,12 @@ int ahci_platform_enable_regulators(struct ahci_host_priv *hpriv)
 {
 	int rc, i;
 
+	if (hpriv->ahci_regulator) {
+		rc = regulator_enable(hpriv->ahci_regulator);
+		if (rc)
+			return rc;
+	}
+
 	for (i = 0; i < hpriv->nports; i++) {
 		if (!hpriv->target_pwrs[i])
 			continue;
@@ -167,6 +173,8 @@ int ahci_platform_enable_regulators(struct ahci_host_priv *hpriv)
 		if (hpriv->target_pwrs[i])
 			regulator_disable(hpriv->target_pwrs[i]);
 
+	if (hpriv->ahci_regulator)
+		regulator_disable(hpriv->ahci_regulator);
 	return rc;
 }
 EXPORT_SYMBOL_GPL(ahci_platform_enable_regulators);
@@ -175,7 +183,8 @@ EXPORT_SYMBOL_GPL(ahci_platform_enable_regulators);
  * ahci_platform_disable_regulators - Disable regulators
  * @hpriv: host private area to store config values
  *
- * This function disables all regulators found in hpriv->target_pwrs.
+ * This function disables all regulators found in hpriv->target_pwrs and
+ * AHCI controller.
  */
 void ahci_platform_disable_regulators(struct ahci_host_priv *hpriv)
 {
@@ -186,6 +195,9 @@ void ahci_platform_disable_regulators(struct ahci_host_priv *hpriv)
 			continue;
 		regulator_disable(hpriv->target_pwrs[i]);
 	}
+
+	if (hpriv->ahci_regulator)
+		regulator_disable(hpriv->ahci_regulator);
 }
 EXPORT_SYMBOL_GPL(ahci_platform_disable_regulators);
 /**
@@ -351,6 +363,7 @@ static int ahci_platform_get_regulator(struct ahci_host_priv *hpriv, u32 port,
  *
  * 1) mmio registers (IORESOURCE_MEM 0, mandatory)
  * 2) regulator for controlling the targets power (optional)
+ *    regulator for controlling the AHCI controller (optional)
  * 3) 0 - AHCI_MAX_CLKS clocks, as specified in the devs devicetree node,
  *    or for non devicetree enabled platforms a single clock
  * 4) resets, if flags has AHCI_PLATFORM_GET_RESETS (optional)
@@ -408,6 +421,15 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 		hpriv->clks[i] = clk;
 	}
 
+	hpriv->ahci_regulator = devm_regulator_get_optional(dev, "ahci");
+	if (IS_ERR(hpriv->ahci_regulator)) {
+		rc = PTR_ERR(hpriv->ahci_regulator);
+		if (rc == -EPROBE_DEFER)
+			goto err_out;
+		rc = 0;
+		hpriv->ahci_regulator = NULL;
+	}
+
 	if (flags & AHCI_PLATFORM_GET_RESETS) {
 		hpriv->rsts = devm_reset_control_array_get_optional_shared(dev);
 		if (IS_ERR(hpriv->rsts)) {
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 3/9] dt-bindings: ata: ahci-platform: document ahci-supply
Date: Mon,  3 Sep 2018 12:01:55 +0200
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This patch document the new optional ahci-supply.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/ata/ahci-platform.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index b88820b4c01e..f495774c8af9 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -33,6 +33,7 @@ Optional properties:
 - target-supply     : regulator for SATA target power
 - phys              : reference to the SATA PHY node
 - phy-names         : must be "sata-phy"
+- ahci-supply       : regulator for AHCI controller
 - ports-implemented : Mask that indicates which ports that the HBA supports
 		      are available for software to use. Useful if PORTS_IMPL
 		      is not programmed by the BIOS, which is true with
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 4/9] ata: ahci_platform: add support for PHY controller
 regulator
Date: Mon,  3 Sep 2018 12:01:56 +0200
Message-Id: <20180903100201.23131-5-clabbe.montjoie@gmail.com>
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The SoC R40 AHCI controller need a PHY regulator to work.
But since the PHY is embedded in the controller, we cannot do a DT node for it,
since phy-supply works only in node with a PHY compatible.
So this patch adds a way to add an optional phy-supply regulator on AHCI controller node.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 drivers/ata/ahci.h             |  1 +
 drivers/ata/libahci_platform.c | 20 ++++++++++++++++++++
 2 files changed, 21 insertions(+)

diff --git a/drivers/ata/ahci.h b/drivers/ata/ahci.h
index 1415f1012de5..ef356e70e6de 100644
--- a/drivers/ata/ahci.h
+++ b/drivers/ata/ahci.h
@@ -353,6 +353,7 @@ struct ahci_host_priv {
 	struct reset_control	*rsts;		/* Optional */
 	struct regulator	**target_pwrs;	/* Optional */
 	struct regulator	*ahci_regulator;/* Optional */
+	struct regulator	*phy_regulator;/* Optional */
 	/*
 	 * If platform uses PHYs. There is a 1:1 relation between the port number and
 	 * the PHY position in this array.
diff --git a/drivers/ata/libahci_platform.c b/drivers/ata/libahci_platform.c
index a886b61476a3..dc4d79b1c9ae 100644
--- a/drivers/ata/libahci_platform.c
+++ b/drivers/ata/libahci_platform.c
@@ -157,6 +157,12 @@ int ahci_platform_enable_regulators(struct ahci_host_priv *hpriv)
 			return rc;
 	}
 
+	if (hpriv->phy_regulator) {
+		rc = regulator_enable(hpriv->phy_regulator);
+		if (rc)
+			goto disable_ahci_pwrs;
+	}
+
 	for (i = 0; i < hpriv->nports; i++) {
 		if (!hpriv->target_pwrs[i])
 			continue;
@@ -173,6 +179,9 @@ int ahci_platform_enable_regulators(struct ahci_host_priv *hpriv)
 		if (hpriv->target_pwrs[i])
 			regulator_disable(hpriv->target_pwrs[i]);
 
+	if (hpriv->phy_regulator)
+		regulator_disable(hpriv->phy_regulator);
+disable_ahci_pwrs:
 	if (hpriv->ahci_regulator)
 		regulator_disable(hpriv->ahci_regulator);
 	return rc;
@@ -198,6 +207,8 @@ void ahci_platform_disable_regulators(struct ahci_host_priv *hpriv)
 
 	if (hpriv->ahci_regulator)
 		regulator_disable(hpriv->ahci_regulator);
+	if (hpriv->phy_regulator)
+		regulator_disable(hpriv->phy_regulator);
 }
 EXPORT_SYMBOL_GPL(ahci_platform_disable_regulators);
 /**
@@ -430,6 +441,15 @@ struct ahci_host_priv *ahci_platform_get_resources(struct platform_device *pdev,
 		hpriv->ahci_regulator = NULL;
 	}
 
+	hpriv->phy_regulator = devm_regulator_get_optional(dev, "phy");
+	if (IS_ERR(hpriv->phy_regulator)) {
+		rc = PTR_ERR(hpriv->phy_regulator);
+		if (rc == -EPROBE_DEFER)
+			goto err_out;
+		rc = 0;
+		hpriv->phy_regulator = NULL;
+	}
+
 	if (flags & AHCI_PLATFORM_GET_RESETS) {
 		hpriv->rsts = devm_reset_control_array_get_optional_shared(dev);
 		if (IS_ERR(hpriv->rsts)) {
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 5/9] dt-bindings: ata: ahci-platform: document phy-supply
Date: Mon,  3 Sep 2018 12:01:57 +0200
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This patch document the new optional phy-supply.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 Documentation/devicetree/bindings/ata/ahci-platform.txt | 1 +
 1 file changed, 1 insertion(+)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index f495774c8af9..45b451961612 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -31,6 +31,7 @@ Optional properties:
 - clocks            : a list of phandle + clock specifier pairs
 - resets            : a list of phandle + reset specifier pairs
 - target-supply     : regulator for SATA target power
+- phy-supply        : regulator for PHY power
 - phys              : reference to the SATA PHY node
 - phy-names         : must be "sata-phy"
 - ahci-supply       : regulator for AHCI controller
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 6/9] ata: ahci_sunxi: add support for r40
Date: Mon,  3 Sep 2018 12:01:58 +0200
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This patch add the r40 compatible to the ahci_sunxi's supported list of
compatible.

Since R40 need ahci_platform to handle the reset controller, we also add
the new AHCI_PLATFORM_GET_RESETS flag for ahci_platform_get_resources().
This has no consequence for older platform (a10, a20) since the reset is
optional.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 drivers/ata/ahci_sunxi.c | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/drivers/ata/ahci_sunxi.c b/drivers/ata/ahci_sunxi.c
index 631610b72aa5..911710643305 100644
--- a/drivers/ata/ahci_sunxi.c
+++ b/drivers/ata/ahci_sunxi.c
@@ -181,7 +181,7 @@ static int ahci_sunxi_probe(struct platform_device *pdev)
 	struct ahci_host_priv *hpriv;
 	int rc;
 
-	hpriv = ahci_platform_get_resources(pdev, 0);
+	hpriv = ahci_platform_get_resources(pdev, AHCI_PLATFORM_GET_RESETS);
 	if (IS_ERR(hpriv))
 		return PTR_ERR(hpriv);
 
@@ -250,6 +250,7 @@ static SIMPLE_DEV_PM_OPS(ahci_sunxi_pm_ops, ahci_platform_suspend,
 
 static const struct of_device_id ahci_sunxi_of_match[] = {
 	{ .compatible = "allwinner,sun4i-a10-ahci", },
+	{ .compatible = "allwinner,sun8i-r40-ahci", },
 	{ },
 };
 MODULE_DEVICE_TABLE(of, ahci_sunxi_of_match);
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 7/9] dt-bindings: ata: update ahci_sunxi bindings
Date: Mon,  3 Sep 2018 12:01:59 +0200
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This patch update binding with the new R40 compatible.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
Reviewed-by: Rob Herring <robh@kernel.org>
---
 Documentation/devicetree/bindings/ata/ahci-platform.txt | 2 ++
 1 file changed, 2 insertions(+)

diff --git a/Documentation/devicetree/bindings/ata/ahci-platform.txt b/Documentation/devicetree/bindings/ata/ahci-platform.txt
index 45b451961612..e30fd106df4f 100644
--- a/Documentation/devicetree/bindings/ata/ahci-platform.txt
+++ b/Documentation/devicetree/bindings/ata/ahci-platform.txt
@@ -10,6 +10,7 @@ PHYs.
 Required properties:
 - compatible        : compatible string, one of:
   - "allwinner,sun4i-a10-ahci"
+  - "allwinner,sun8i-r40-ahci"
   - "brcm,iproc-ahci"
   - "hisilicon,hisi-ahci"
   - "cavium,octeon-7130-ahci"
@@ -44,6 +45,7 @@ Required properties when using sub-nodes:
 - #address-cells    : number of cells to encode an address
 - #size-cells       : number of cells representing the size of an address
 
+For allwinner,sun8i-r40-ahci, the reset propertie must be present.
 
 Sub-nodes required properties:
 - reg		    : the port number
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 8/9] ARM: dts: sun8i: r40: add sata node
Date: Mon,  3 Sep 2018 12:02:00 +0200
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Cc: devicetree@vger.kernel.org, linux-kernel@vger.kernel.org,
 linux-ide@vger.kernel.org, linux-sunxi@googlegroups.com,
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R40 have a sata controller which is the same as A20.
This patch adds a DT node for it.

Signed-off-by: Icenowy Zheng <icenowy@aosc.io>
Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 13 +++++++++++++
 1 file changed, 13 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 852c2ccc3268..d27c522e1918 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -550,6 +550,19 @@
 			#size-cells = <0>;
 		};
 
+		ahci: sata@1c18000 {
+			compatible = "allwinner,sun8i-r40-ahci";
+			reg = <0x01c18000 0x1000>;
+			interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
+			clocks = <&ccu CLK_BUS_SATA>, <&ccu CLK_SATA>;
+			resets = <&ccu RST_BUS_SATA>;
+			resets-name = "ahci";
+			#address-cells = <1>;
+			#size-cells = <0>;
+			status = "disabled";
+
+		};
+
 		gmac: ethernet@1c50000 {
 			compatible = "allwinner,sun8i-r40-gmac";
 			syscon = <&ccu>;
From patchwork Mon Sep  3 10:02:01 2018
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From: Corentin Labbe <clabbe.montjoie@gmail.com>
To: axboe@kernel.dk, hdegoede@redhat.com, mark.rutland@arm.com,
 maxime.ripard@bootlin.com, robh+dt@kernel.org, wens@csie.org
Subject: [PATCH v5 9/9] ARM: dts: sun8i: sun8i-r40-bananapi-m2-ultra: enable
 AHCI
Date: Mon,  3 Sep 2018 12:02:01 +0200
Message-Id: <20180903100201.23131-10-clabbe.montjoie@gmail.com>
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This patch enable the AHCI controller.
Since this controller need two regulator, this patch add them.

Signed-off-by: Corentin Labbe <clabbe.montjoie@gmail.com>
---
 arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts | 18 ++++++++++++++++++
 1 file changed, 18 insertions(+)

diff --git a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
index a891a387e8f1..438b7b44dab3 100644
--- a/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
+++ b/arch/arm/boot/dts/sun8i-r40-bananapi-m2-ultra.dts
@@ -105,6 +105,12 @@
 	};
 };
 
+&ahci {
+	ahci-supply = <&reg_dldo4>;
+	phy-supply = <&reg_eldo3>;
+	status = "okay";
+};
+
 &de {
 	status = "okay";
 };
@@ -250,6 +256,18 @@
 	regulator-name = "vcc-wifi";
 };
 
+&reg_dldo4 {
+	regulator-min-microvolt = <2500000>;
+	regulator-max-microvolt = <2500000>;
+	regulator-name = "vdd2v5-sata";
+};
+
+&reg_eldo3 {
+	regulator-min-microvolt = <1200000>;
+	regulator-max-microvolt = <1200000>;
+	regulator-name = "vdd1v2-sata";
+};
+
 &tcon_tv0 {
 	status = "okay";
 };
From b9f6b80e04ad061ff4e12bdb72ea21af3518d79f Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@bootlin.com>
Date: Mon, 25 Mar 2019 14:52:44 +0100
Subject: ARM: dts: sun8i: r40: Fix AHCI reset-names property

The AHCI node was introduced with a typo in the reset-names property that
got written resets-name instead.

This was working because the reset is optional for that driver, and the
controller was put out of reset by the bootloader.

Fixes: 41c64d3318aa ("ARM: dts: sun8i: r40: add sata node")
Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

(limited to 'arch/arm/boot/dts/sun8i-r40.dtsi')

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 1061d46efafd..9784c23346a8 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -562,7 +562,7 @@
 			interrupts = <GIC_SPI 56 IRQ_TYPE_LEVEL_HIGH>;
 			clocks = <&ccu CLK_BUS_SATA>, <&ccu CLK_SATA>;
 			resets = <&ccu RST_BUS_SATA>;
-			resets-name = "ahci";
+			reset-names = "ahci";
 			#address-cells = <1>;
 			#size-cells = <0>;
 			status = "disabled";
-- 
cgit 1.2-0.3.lf.el7

From 327384569871e7e3ed637d89726abacda3902098 Mon Sep 17 00:00:00 2001
From: Maxime Ripard <maxime.ripard@bootlin.com>
Date: Mon, 25 Mar 2019 14:52:45 +0100
Subject: ARM: dts: sun8i: r40: Remove useless AHCI properties

The SATA controller never have any children nodes, so we don't need the
address and size cells properties.

Acked-by: Chen-Yu Tsai <wens@csie.org>
Signed-off-by: Maxime Ripard <maxime.ripard@bootlin.com>
---
 arch/arm/boot/dts/sun8i-r40.dtsi | 2 --
 1 file changed, 2 deletions(-)

diff --git a/arch/arm/boot/dts/sun8i-r40.dtsi b/arch/arm/boot/dts/sun8i-r40.dtsi
index 9784c23346a8..56c6885b02d1 100644
--- a/arch/arm/boot/dts/sun8i-r40.dtsi
+++ b/arch/arm/boot/dts/sun8i-r40.dtsi
@@ -563,8 +563,6 @@
 			clocks = <&ccu CLK_BUS_SATA>, <&ccu CLK_SATA>;
 			resets = <&ccu RST_BUS_SATA>;
 			reset-names = "ahci";
-			#address-cells = <1>;
-			#size-cells = <0>;
 			status = "disabled";
 
 		};
-- 
cgit 1.2-0.3.lf.el7

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