I2c_imx_init_recovery_info
Webb26 apr. 2024 · But I discovered that the recover mechanism is not called in case of blocked bus. The debugging showed that the i2c_imx_init_recovery_info() is not running correctly. Here we try to get the state of the PINCTRL_STATE_DEFAULT and the “gpio” i2c-imx.c:1016 But when you check the dts imx6qdl-colibri.dtsi:392 you see tha... Webb@@ -1031,6 +1175,50 @@ static int i2c_imx_init_recovery_info(struct imx_i2c_struct *i2c_imx, return 0;} + /* + * switch SCL and SDA to their GPIO function and do some bitbanging + * for bus recovery. + * There are platforms such as Layerscape that don't support pinctrl, so add
I2c_imx_init_recovery_info
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Webb1 apr. 2024 · I2C总线具有结构简单使用方便的特点。本文描述了Linux下I2C驱动的结构，并在此基础上给出了I2C设备驱动和应用的实现。 1 引言 I2C (INTER－Integrated … Webb[prev in list] [next in list] [prev in thread] [next in thread] List: linux-i2c Subject: [PATCH] i2c: core: Disable i2c_generic_scl_recovery callback checks with CFI From: Zhipeng Wang Date: 2024-06-28 2:41:55 Message-ID: 20240628024155.2135990-1-zhipeng.wang_1 nxp ! com [Download RAW message or …
Webb26 sep. 2016 · Some SoC might load the GPIO driver after the I2C driver and using the I2C bus recovery mechanism via GPIOs. In this case it is crucial to defer probing if the GPIO request functions do so, otherwise the I2C driver gets loaded without recovery mechanisms enabled. Webb12 sep. 2016 · Move pinctrl init into the i2c_imx_init_recovery_info() Update commit message and code comment v6: Update code comment v5: Revert the last minute …
Webb31 maj 2024 · Recovery functionality is in the kernel driver already in function i2c_imx_init_recovery_info: i2c-imx.c\busses\i2c\drivers - linux-imx - i.MX Linux … Webb[abi_symbol_list] # commonly used symbols: add_wait_queue: alloc_chrdev_region: alloc_etherdev_mqs: alloc_netdev_mqs __alloc_pages: alloc_pages_exact __alloc_percpu
WebbImplement bus recovery methods for i2c-imx so we can recover from situations where SCL/SDA are stuck low.
WebbOn 2016-09-06 13:06, Leo Li wrote: > On Tue, Sep 6, 2016 at 1:58 PM, Uwe Kleine-König > wrote: >> On Fri, Aug 19, 2016 at 05:05:22PM -0500, Li Yang wrote: >>> Since commit 1c4b6c3bcf30 ("i2c: imx: implement bus recovery") the >>> driver starts to use gpio/pinctrl to do i2c bus recovery.But pinctrl … byproduct\\u0027s 0wWebb14 maj 2024 · Kernel symbols, such as functions and variables, have version information attached to them. This package contains the symbol versions for the standard kernels. This package is needed for compiling kernel module packages with proper package dependencies. Source Timestamp: 2024-03-30 09:19:37 +0000 GIT Revision ... byproduct\\u0027s 1Webb6 sep. 2016 · On Fri, Aug 19, 2016 at 05:05:22PM -0500, Li Yang wrote: > Since commit 1c4b6c3bcf30 ("i2c: imx: implement bus recovery") the > driver starts to use gpio/pinctrl to do i2c bus recovery. But pinctrl > is not always available for platforms with this controller such as ls1021a > and ls1043a, and the device tree binding also mentioned this gpio … clothes neutral gender newbornWebbLKML Archive on lore.kernel.org help / color / mirror / Atom feed * [PATCH/RFT 0/6] i2c: recovery: fix GPIO usage for recovery @ 2024-07-13 21:09 Wolfram Sang 2024-07-13 21:09 ` [PATCH/RFT 1/6] i2c: designware: use open drain for recovery GPIO Wolfram Sang ` (5 more replies) 0 siblings, 6 replies; 16+ messages in thread From: Wolfram … clothes never smell cleanWebb20 aug. 2024 · linux在启动uboot的时候，会解析设备树，自动调用i2c_register_board_info函数将硬件设备注册进设备链表中。. 故在总线驱动注册时，会扫描设备链表域，并获取链表中的数据生成对应的与adapter总线相同的i2c_client。. 在i2c_client生成完毕之后，就会开始遍历i2c_driver链表 ... clothes neutralWebb6 apr. 2024 · From: Clark Wang <> Subject [PATCH V2 10/18] i2c: imx-lpi2c: add bus recovery feature: Date: Tue, 6 Apr 2024 19:32:58 +0800 byproduct\u0027s 1WebbI2C子系统–mpu6050驱动实验. 2. I2C子系统–mpu6050驱动实验 ¶. 本章我们以板载MPU6050为例讲解i2c驱动程序的编写，本章主要分为五部分内容。. 第一部分，i2c基本知识，回忆i2c物理总线和基本通信协议。. 第二部分，linux下的i2c驱动框架。. 第三部分，i2c总线驱动代码 ... byproduct\\u0027s 15