[EXT] [PATCH 1/2] arm64: a37xx: pci: Make PCIe Reset GPIO DT compatible with Linux kernel DT

[Kostya Porotchkin]

________________________________________
From: Pali Rohár <pali at kernel.org>
Sent: Wednesday, August 19, 2020 16:57
To: Stefan Roese; Kostya Porotchkin
Cc: u-boot at lists.denx.de
Subject: [EXT] [PATCH 1/2] arm64: a37xx: pci: Make PCIe Reset GPIO DT compatible with Linux kernel DT

External Email

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Change active-high to active-low and change DT property name from
reset-gpio to reset-gpios. This format of gpio reset is used by
pci-aardvark driver in Linux kernel.

Signed-off-by: Pali Rohár <pali at kernel.org>
Reviewed-by: Konstantin Porotchkin <kostap at marvell.com>
---
 arch/arm/dts/armada-3720-db.dts          | 2 +-
 arch/arm/dts/armada-3720-espressobin.dts | 2 +-
 arch/arm/dts/armada-3720-turris-mox.dts  | 2 +-
 drivers/pci/pci-aardvark.c               | 6 +++---
 4 files changed, 6 insertions(+), 6 deletions(-)

diff --git a/arch/arm/dts/armada-3720-db.dts b/arch/arm/dts/armada-3720-db.dts
index 1b219c423b..1b1b66b94d 100644
--- a/arch/arm/dts/armada-3720-db.dts
+++ b/arch/arm/dts/armada-3720-db.dts
@@ -159,6 +159,6 @@
 &pcie0 {
        pinctrl-names = "default";
        pinctrl-0 = <&pcie_pins>;
-       reset-gpio = <&gpiosb 3 GPIO_ACTIVE_HIGH>;
+       reset-gpios = <&gpiosb 3 GPIO_ACTIVE_LOW>;
        status = "okay";
 };
diff --git a/arch/arm/dts/armada-3720-espressobin.dts b/arch/arm/dts/armada-3720-espressobin.dts
index 84e2c2adba..f10a953ec5 100644
--- a/arch/arm/dts/armada-3720-espressobin.dts
+++ b/arch/arm/dts/armada-3720-espressobin.dts
@@ -145,6 +145,6 @@
 &pcie0 {
        pinctrl-names = "default";
        pinctrl-0 = <&pcie_pins>;
-       reset-gpio = <&gpiosb 3 GPIO_ACTIVE_HIGH>;
+       reset-gpios = <&gpiosb 3 GPIO_ACTIVE_LOW>;
        status = "okay";
 };
diff --git a/arch/arm/dts/armada-3720-turris-mox.dts b/arch/arm/dts/armada-3720-turris-mox.dts
index 0f0a6ce65d..974270cc8c 100644
--- a/arch/arm/dts/armada-3720-turris-mox.dts
+++ b/arch/arm/dts/armada-3720-turris-mox.dts
@@ -172,6 +172,6 @@
 &pcie0 {
        pinctrl-names = "default";
        pinctrl-0 = <&pcie_pins>;
-       reset-gpio = <&gpiosb 3 GPIO_ACTIVE_HIGH>;
+       reset-gpios = <&gpiosb 3 GPIO_ACTIVE_LOW>;
        status = "disabled";
 };
diff --git a/drivers/pci/pci-aardvark.c b/drivers/pci/pci-aardvark.c
index 711b930d0f..5b3f23c184 100644
--- a/drivers/pci/pci-aardvark.c
+++ b/drivers/pci/pci-aardvark.c
@@ -616,7 +616,7 @@ static int pcie_advk_probe(struct udevice *dev)
 #if CONFIG_IS_ENABLED(DM_GPIO)
        struct gpio_desc reset_gpio;

-       gpio_request_by_name(dev, "reset-gpio", 0, &reset_gpio,
+       gpio_request_by_name(dev, "reset-gpios", 0, &reset_gpio,
                             GPIOD_IS_OUT);
        /*
         * Issue reset to add-in card through the dedicated GPIO.
@@ -633,9 +633,9 @@ static int pcie_advk_probe(struct udevice *dev)
         */
        if (dm_gpio_is_valid(&reset_gpio)) {
                dev_dbg(pcie->dev, "Toggle PCIE Reset GPIO ...\n");
-               dm_gpio_set_value(&reset_gpio, 0);
-               mdelay(200);
                dm_gpio_set_value(&reset_gpio, 1);
+               mdelay(200);
+               dm_gpio_set_value(&reset_gpio, 0);
        }
 #else
        dev_dbg(pcie->dev, "PCIE Reset on GPIO support is missing\n");
--
2.20.1