linux-kernel - [PATCH 1/3] usb: dwc3: of-simple: Add compatible for rk3328

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Date:   Sun, 16 Aug 2020 19:16:50 +0200 (CEST)
From:   Cameron Nemo <cnemo@...anota.com>
To:     Devicetree <devicetree@...r.kernel.org>,
        Linux Arm Kernel <linux-arm-kernel@...ts.infradead.org>,
        Linux Rockchip <linux-rockchip@...ts.infradead.org>,
        linux-kernel@...r.kernel.org, linux-usb@...r.kernel.org
Cc:     robh+dt@...nel.org, Heiko <heiko@...ech.de>, balbi@...nel.org,
        gregkh@...uxfoundation.org
Subject: [PATCH 1/3] usb: dwc3: of-simple: Add compatible for rk3328

Add a compatible to be hooked into by the Rockchip rk3328 device tree.

The rk3399 compatible cannot be reused because the rk3328 SoCs may
require a specialized driver in the future, and old device trees must
remain commpatible with newer kernels.

Signed-off-by: Cameron Nemo <cnemo@...anota.com>
---
drivers/usb/dwc3/dwc3-of-simple.c | 4 +++-
1 file changed, 3 insertions(+), 1 deletion(-)

diff --git a/drivers/usb/dwc3/dwc3-of-simple.c b/drivers/usb/dwc3/dwc3-of-simple.c
index 7df115012935..54f38e434028 100644
--- a/drivers/usb/dwc3/dwc3-of-simple.c
+++ b/drivers/usb/dwc3/dwc3-of-simple.c
@@ -49,7 +49,8 @@ static int dwc3_of_simple_probe(struct platform_device *pdev)
* Some controllers need to toggle the usb3-otg reset before trying to
* initialize the PHY, otherwise the PHY times out.
*/
-	if (of_device_is_compatible(np, "rockchip,rk3399-dwc3"))
+	if (of_device_is_compatible(np, "rockchip,rk3399-dwc3") ||
+	    of_device_is_compatible(np, "rockchip,rk3328-dwc3"))
simple->need_reset = true;

simple->resets = of_reset_control_array_get(np, false, true,
@@ -171,6 +172,7 @@ static const struct dev_pm_ops dwc3_of_simple_dev_pm_ops = {
};

static const struct of_device_id of_dwc3_simple_match[] = {
+	{ .compatible = "rockchip,rk3328-dwc3" },
{ .compatible = "rockchip,rk3399-dwc3" },
{ .compatible = "xlnx,zynqmp-dwc3" },
{ .compatible = "cavium,octeon-7130-usb-uctl" },
--
2.28.0