linux-kernel - [PATCH 2/2] usb: dwc3: exynos: add support for exynos7870

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Message-Id: <20250204-exynos7870-usb-v1-2-a7753f8183a4@disroot.org>
Date: Tue, 04 Feb 2025 02:09:30 +0530
From: Kaustabh Chakraborty <kauschluss@...root.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk@...nel.org>, 
 Conor Dooley <conor@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: Sergey Lisov <sleirsgoevy@...il.com>, linux-usb@...r.kernel.org, 
 devicetree@...r.kernel.org, linux-arm-kernel@...ts.infradead.org, 
 linux-samsung-soc@...r.kernel.org, linux-kernel@...r.kernel.org, 
 Kaustabh Chakraborty <kauschluss@...root.org>
Subject: [PATCH 2/2] usb: dwc3: exynos: add support for exynos7870

Exynos7870 devices have a DWC3 compatible USB 2.0 controller.
Add support in the driver by:
 - Adding its own compatible string, "samsung,exynos7870-dwusb2".
 - Adding three USBDRD clocks named "usbdrd20", "usbdrd20_ctrl_clk", and
   "usbdrd20_ref_clk", to be controlled by the driver.

Signed-off-by: Kaustabh Chakraborty <kauschluss@...root.org>
---
 drivers/usb/dwc3/dwc3-exynos.c | 9 +++++++++
 1 file changed, 9 insertions(+)

diff --git a/drivers/usb/dwc3/dwc3-exynos.c b/drivers/usb/dwc3/dwc3-exynos.c
index f5d963fae9e069e1bd145ff5bd1b704da89fb74c..34f2b9e8529303cd2a957baed5819a45cbcf3309 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -163,6 +163,12 @@ static const struct dwc3_exynos_driverdata exynos7_drvdata = {
 	.suspend_clk_idx = 1,
 };
 
+static const struct dwc3_exynos_driverdata exynos7870_drvdata = {
+	.clk_names = { "usbdrd20", "usbdrd20_ctrl_clk", "usbdrd20_ref_clk" },
+	.num_clks = 3,
+	.suspend_clk_idx = -1,
+};
+
 static const struct dwc3_exynos_driverdata exynos850_drvdata = {
 	.clk_names = { "bus_early", "ref" },
 	.num_clks = 2,
@@ -185,6 +191,9 @@ static const struct of_device_id exynos_dwc3_match[] = {
 	}, {
 		.compatible = "samsung,exynos7-dwusb3",
 		.data = &exynos7_drvdata,
+	}, {
+		.compatible = "samsung,exynos7870-dwusb2",
+		.data = &exynos7870_drvdata,
 	}, {
 		.compatible = "samsung,exynos850-dwusb3",
 		.data = &exynos850_drvdata,

-- 
2.48.1