linux-kernel - [PATCH 2/2] usb: dwc3: exynos: add support for Google Tensor gs101

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Date: Tue, 23 Apr 2024 21:19:46 +0100
From: André Draszik <andre.draszik@...aro.org>
To: Greg Kroah-Hartman <gregkh@...uxfoundation.org>, 
 Rob Herring <robh@...nel.org>, Krzysztof Kozlowski <krzk+dt@...nel.org>, 
 Conor Dooley <conor+dt@...nel.org>, Alim Akhtar <alim.akhtar@...sung.com>, 
 Peter Griffin <peter.griffin@...aro.org>, 
 Thinh Nguyen <Thinh.Nguyen@...opsys.com>
Cc: Krzysztof Kozlowski <krzk@...nel.org>, 
 Tudor Ambarus <tudor.ambarus@...aro.org>, 
 Will McVicker <willmcvicker@...gle.com>, Roy Luo <royluo@...gle.com>, 
 kernel-team@...roid.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, 
 André Draszik <andre.draszik@...aro.org>
Subject: [PATCH 2/2] usb: dwc3: exynos: add support for Google Tensor gs101

The Exynos-based Google Tensor gs101 SoC has a DWC3 compatible USB
controller and can reuse the existing Exynos glue. Add the
google,gs101-dwusb3 compatible and associated driver data. Four clocks
are required for USB for this SoC:
    * bus clock
    * suspend clock
    * Link interface AXI clock
    * Link interface APB clock

Signed-off-by: André Draszik <andre.draszik@...aro.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 3427522a7c6a..9a6e988d165a 100644
--- a/drivers/usb/dwc3/dwc3-exynos.c
+++ b/drivers/usb/dwc3/dwc3-exynos.c
@@ -169,6 +169,12 @@ static const struct dwc3_exynos_driverdata exynos850_drvdata = {
 	.suspend_clk_idx = -1,
 };
 
+static const struct dwc3_exynos_driverdata gs101_drvdata = {
+	.clk_names = { "bus_early", "susp_clk", "link_aclk", "link_pclk" },
+	.num_clks = 4,
+	.suspend_clk_idx = 1,
+};
+
 static const struct of_device_id exynos_dwc3_match[] = {
 	{
 		.compatible = "samsung,exynos5250-dwusb3",
@@ -182,6 +188,9 @@ static const struct of_device_id exynos_dwc3_match[] = {
 	}, {
 		.compatible = "samsung,exynos850-dwusb3",
 		.data = &exynos850_drvdata,
+	}, {
+		.compatible = "google,gs101-dwusb3",
+		.data = &gs101_drvdata,
 	}, {
 	}
 };

-- 
2.44.0.769.g3c40516874-goog