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From: Danny Kaehn <danny.kaehn@plexus.com>
To: Benjamin Tissoires <bentiss@kernel.org>,
	Andy Shevchenko <andriy.shevchenko@linux.intel.com>,
	Danny Kaehn <danny.kaehn@plexus.com>,
	Andi Shyti <andi.shyti@kernel.org>,
	Conor Dooley <conor+dt@kernel.org>
Cc: Jiri Kosina <jikos@kernel.org>,
	linux-input@vger.kernel.org,
	Dmitry Torokhov <dmitry.torokhov@gmail.com>,
	Ethan Twardy <ethan.twardy@plexus.com>,
	linux-i2c@vger.kernel.org, linux-kernel@vger.kernel.org,
	Leo Huang <leohu@nvidia.com>, Arun D Patil <arundp@nvidia.com>,
	Willie Thai <wthai@nvidia.com>,
	Ting-Kai Chen <tingkaic@nvidia.com>,
	Bartosz Golaszewski <brgl@kernel.org>
Subject: [PATCH v14 2/2] HID: cp2112: Configure I2C bus speed from firmware
Date: Wed, 20 May 2026 11:13:07 -0500	[thread overview]
Message-ID: <20260520-cp2112-dt-v14-2-b1b4b6734b6f@plexus.com> (raw)
In-Reply-To: <20260520-cp2112-dt-v14-0-b1b4b6734b6f@plexus.com>

Now that the I2C adapter on the CP2112 can have an associated firmware
node, set the bus speed based on firmware configuration

Reviewed-by: Andy Shevchenko <andriy.shevchenko@linux.intel.com>
Signed-off-by: Danny Kaehn <danny.kaehn@plexus.com>
---
 drivers/hid/hid-cp2112.c | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/drivers/hid/hid-cp2112.c b/drivers/hid/hid-cp2112.c
index e960fc988058..04379db93571 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1223,6 +1223,7 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 	struct fwnode_handle *cp2112_fwnode;
 	struct fwnode_handle *child;
 	struct gpio_irq_chip *girq;
+	struct i2c_timings timings;
 	u32 addr;
 	int ret;
 
@@ -1308,6 +1309,9 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
 		goto err_power_normal;
 	}
 
+	i2c_parse_fw_timings(&dev->adap.dev, &timings, true);
+
+	config.clock_speed = cpu_to_be32(timings.bus_freq_hz);
 	config.retry_time = cpu_to_be16(1);
 
 	ret = cp2112_hid_output(hdev, (u8 *)&config, sizeof(config),

-- 
2.25.1


  parent reply	other threads:[~2026-05-20 16:29 UTC|newest]

Thread overview: 7+ messages / expand[flat|nested]  mbox.gz  Atom feed  top
2026-05-20 16:13 [PATCH v14 0/2] Firmware Support for USB-HID Devices and CP2112 Danny Kaehn
2026-05-20 16:13 ` [PATCH v14 1/2] HID: cp2112: Add fwnode support Danny Kaehn
2026-06-01 19:18   ` Andy Shevchenko
2026-06-03 19:46   ` Jacky Huang
2026-06-04 12:45   ` Bartosz Golaszewski
2026-05-20 16:13 ` Danny Kaehn [this message]
2026-06-10 15:35 ` [PATCH v14 0/2] Firmware Support for USB-HID Devices and CP2112 Jiri Kosina

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