From: Danny Kaehn <danny.kaehn@plexus.com>
To: Rob Herring <robh@kernel.org>,
Krzysztof Kozlowski <krzk+dt@kernel.org>,
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>,
devicetree@vger.kernel.org, linux-input@vger.kernel.org,
Dmitry Torokhov <dmitry.torokhov@gmail.com>,
Bartosz Golaszewski <bartosz.golaszewski@linaro.org>,
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>
Subject: [PATCH v13 3/3] HID: cp2112: Configure I2C Bus Speed from Firmware
Date: Tue, 27 Jan 2026 08:47:50 -0600 [thread overview]
Message-ID: <20260127-cp2112-dt-v13-3-6448ddd4bf22@plexus.com> (raw)
In-Reply-To: <20260127-cp2112-dt-v13-0-6448ddd4bf22@plexus.com>
Now that the I2C adapter on the CP2112 can have an associated firmware
node, set the bus speed based on firmware configuration
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 ea19b5cb58f9..4c5957e0a5cc 100644
--- a/drivers/hid/hid-cp2112.c
+++ b/drivers/hid/hid-cp2112.c
@@ -1220,6 +1220,7 @@ static int cp2112_probe(struct hid_device *hdev, const struct hid_device_id *id)
struct cp2112_smbus_config_report config;
struct fwnode_handle *child;
struct gpio_irq_chip *girq;
+ struct i2c_timings timings;
u32 addr;
int ret;
@@ -1304,6 +1305,9 @@ 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
next prev parent reply other threads:[~2026-01-27 14:52 UTC|newest]
Thread overview: 25+ messages / expand[flat|nested] mbox.gz Atom feed top
2026-01-27 14:47 [PATCH v13 0/3] Firmware Support for USB-HID Devices and CP2112 Danny Kaehn
2026-01-27 14:47 ` [PATCH v13 1/3] dt-bindings: i2c: Add CP2112 HID USB to SMBus Bridge Danny Kaehn
2026-01-27 16:02 ` Danny Kaehn
2026-01-27 21:00 ` Andy Shevchenko
2026-01-28 10:35 ` Krzysztof Kozlowski
2026-01-28 12:49 ` Andy Shevchenko
2026-01-28 15:06 ` Conor Dooley
2026-01-28 15:51 ` Andy Shevchenko
2026-01-28 15:52 ` Krzysztof Kozlowski
2026-01-28 15:52 ` Krzysztof Kozlowski
2026-01-28 17:24 ` Conor Dooley
2026-01-28 20:14 ` Danny Kaehn
2026-01-28 15:48 ` Krzysztof Kozlowski
2026-01-28 16:05 ` Andy Shevchenko
2026-01-28 19:52 ` Krzysztof Kozlowski
2026-01-28 20:43 ` Andy Shevchenko
2026-01-28 20:05 ` Danny Kaehn
2026-01-29 16:01 ` Rob Herring (Arm)
2026-02-06 7:55 ` Andy Shevchenko
2026-01-27 14:47 ` [PATCH v13 2/3] HID: cp2112: Fwnode Support Danny Kaehn
2026-01-27 20:06 ` Andy Shevchenko
2026-01-29 18:36 ` Danny Kaehn
2026-01-30 7:53 ` Andy Shevchenko
2026-01-27 14:47 ` Danny Kaehn [this message]
2026-01-27 14:54 ` [PATCH v13 3/3] HID: cp2112: Configure I2C Bus Speed from Firmware Danny Kaehn
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